Okay, fine. But they shouldn't have called it a UNO, it's a completely different beast. It's just going to cause headaches for anyone familiar with the old UNO. Very dumb move.
Different use case, though. The Arduino boards support 5V shields, have a wide range power supply, quicker compile time and better peripherals (for instance, a linear ADC).
We made a board using the Renesas RA4M1, Added optocouplers on all 13 IOs so we can input up to 32V. Also added 13 transistors to control mosfets /relays. For the Analog pins, we added some voltage divider circuits so we can read up to 36V. The Can is very easy to use we simply added a Sn65Hvd with choke and capacitors, we manage to read machinery Canbus and activate modules. We are currently trying to add a RF module to the board as well as a Canbus display. We had to change the renesas Buck converter since it is absoulte trash and really hard to solder. We love the ra4m1.
My hot air station laughs at the "inability to swap chips". I still don't want one though. ESP32, RP2040/2530 or even good old Arduino Nano (the Elegoo clone ones) are my choice these days.
I don't see the sense in continuing this core line. I've retired all my atmel cores over 2 years ago in favor of the ESP line of microcontrollers. Over the years I've accumulated just about every form factor of arduino modules all of which are now rotting in a box. Life is too short for all the devices being spung on us. I now standardize on the esp32C3 for battery based sensors, esp32S3 for hubs and esp32 for bluetooth audio (for the A2DP). For wearables I use the nrf52480 family.
I regret buying it. Many popular libraries won't run on it. Meanwhile the inexpensive ESP Wroom32, utilising both cores at 240mhz. Or how about the Teensy 4.1? 600mhz overclock? 1ghz Overclock?
I don’t think I’ve ever spec’d my components based on clock speed. 48Mhz vs 1Ghz is a chisel vs dynamite, something’s gone horribly wrong if that’s what’s been picked. What I’m considering: price buying in bulk, availability, power consumption, instruction set, pin counts.
@@Comonad I see. Clock speed is critical for me since my projects are generally music hardware. Latest project needs a good clock speed for the TFT graphics as well. In fact making use of both cores of the ESP32 was essential. 240mhz x 2. ESP Wroom 32 is very affordable. Teensy and DaisySeed not so much. Would have to be very special music projects for either of those two devices. I started some of my projects on the Uno R3 and then shifted over to ESP32.
The thing is: Arduino is produced just for hobbyists. Esp32 are industrial mc that are used by the millions in all kinds of devices, and industry makes sure that this mc family is always up to par. I thank Arduino for providing me with the first steps but honestly this platform today is light years behind while at the same time ridiculously overpriced. Good ESP32 boards today, obviously with Wifi, BLE, efficient deep sleep and 16MB are below €3 and fully support 5V peripherals. And they are just as simple to program as Arduino, even ArduinoIDE would work (although I strongly recommend platformio or better yet esphome). Don’t be trapped in the old Arduino World.
The R4 is something that in the past, I would have bought one just to put it in a nice case to display on my shelf. The way the economy is now, I can't really justify the expense for something I probably won't use. Like others have said, I'll just use the ESP32 or a Pico W for 1/4 or less of the cost of the R4.
First time viewer. Definitely a SUB-worth video Arduino "Give'ith & Take'ith away? But still COoL. Cheers from So.Ca.USA 3rd house on the left (please call before stopping by)
I was curious, started with Arduino originally. I am puzzled why people use Arduino these days. A 16MB single core ESP32-C3 costs less than €2, a dual-core 16MB ESP32 with high density ttf display and liion charger is under €5, with 16 gpios, and about 1/4 of the size of an Arduino. I am honestly just wondering. Btw you can of course run 5v peripherals. Gpios are 5v tolerant.
From my (limited) understanding, I think it’s in big part the name, how much literature there is about it, how much support you can get, and how many prebuilt libraries to interface with sensors/instruments. I think of it like how Apple devices are, much pricier, somewhat limited, but far more user friendly. The way I’ve justified it is that if you’re brand new, and consider the hours spent on working on a project as a job with hours to be paid, even at “minimum wage” you’ll make back the money you spent tenfold due to all of the resources easily available for Arduino. Not to say that ESP32s don’t have enough resources, but with arduino it’s a whole lot easier to find what you’re looking for without having to learn about things like EEPROM vs flash vs sram, or CAN vs I2C vs JTAG vs USB… (repeat ad nauseum)
@@kurtschreiber8833I hear you, and I agree. I went the same path, and there are tons of things I deliberately miss out on because - like you say - I feel comfortable with what I know and am proficient with. That said, having done this journey with Arduino and esp32 myself, I meant to encourage anyone to tackle esp32. In retrospect, it wasn’t hard at all to make this transition, and I literally never ever came across Arduino sample code that wouldn’t also run on esp32. All it takes is a bit more understanding about gpios, and occasionally adjusting the gpios numbers. That necessity started in my Arduino days already when then newer Arduinos like NanoEvery required this as well. In a nutshell, esp32 have been a pleasant uplift because of price, wifi, and finally no more out of memory issues. I didn’t mean this ideological, and when projects run fine on Arduinos, then that’s great. I just started to feel bad seeing relatively weak Arduino boards sell for >$10-20 from „brands“ when there was really no innovation investment anymore in this ecosystem in the past decade, and generic boards perform just as good at a fraction of price.
@@twr4641 you said it perfectly, I completely agree that people should bite the bullet and go for esp32 from the start/as soon as possible. I’m still new to esp32 and the majority of what I know has been through troubleshooting circuits at my job or reading up on things in my off time. It’s reassuring that most libraries that run on Arduinos also work with esp32 boards! I’ve only built original circuits/projects on arduino knockoffs but I’ve been doing research for my next project which definitely needs an esp32 instead of an arduino dev board. I had read in the past that this isn’t usually the case but maybe it was someone biased/unknowledgeable or it’s changed since I read that (it was a while ago).
@@kurtschreiber8833 I switched from ArduinoIDE to VSCode/platformio once code became more complex. It‘s a learning curve coming from ArduinoIDE but pays off in no time. The library manager in platformio knows the type of mcu your project uses, and can often find similar libraries in case you do run in the unlikely issue that a particular component/example uses Arduino-specific libraries. You are right, you frequently read about such issues. To me it feels these might be from the early days when esp32 were new and exotic.
Honestly, I TA'd for a few semesters in what was basically a sophomore arduino class in college. The buck converter is really nice, but the maximum output current is going to cause headaches for years to come. I don't know how many people I've seen power a tiny 6v DC fan directly off an arduino pin or light up 5 LEDs on the same pin. I mean, they're sophomores, it's hard to fault them (in many cases these were mechanical engineers getting their first exposure to C++ or building a circuit that wasn't provided in a schematic) but these changes are going to have some real knock on effects for schools. I've chased down some funny issues back then, it would get old explaining to a student why they need to buy a new arduino after accidentally shorting a pin to ground.
Tbh, I don't even know why to use Arduino, especially original one. Raspberry Pi Pico is much cheaper, has choice of using more SDKs (C++ cross compiler and some tools, Arduino, Micropython, maybe FreeRTOS, Zephyr, ...), extra wifi/ble is for like 1.5EUR, it has way more RAM and Flash, less EEPROM, much faster CPU. C++ and Python code can be prototyped at PC. I like Arduino Pro Mini for some battery powered projects, but I'm getting curious about Nordic Semiconductor nRF52 line.
Cool. The 14bit ADC could interest me... but wait I'm still using my Duemilanove which I bought when it first came out. DC Current per I/O Pin:40 mA, And on-board FTDI. And a proper big-boy Type B connector. They don't break! And I can even pronounce Duemilanove properly.
I picked up one of these only because it is almost alone in being fast + 5v level + Arduino. I am using it to interface with an ancient Casio computer, and level converters + ESP32 did not work with its non-standard I/O. Also of note is that the new chip is a whole other world from STM when you dig below the Arduino libraries.
The VREF pin on the Arduino Uno R3 is used as the reference voltage for the analog-to-digital converter So you may connect it to 2v to get the full ADC resolution over 2volt in stead of the default 5v
Did anyone notice the map of Italy on the bottom side in one of the corners? Complete with both islands! Also, ChatGPT does a good job programming the led array.
They should have put a removable jumper on the LED pin13 circuit to remove the LED and full utilization of pin13. The reduced power on I/O pins and soldered in micro are deal breakers for me.
I think it outgrew its from factor. It was ok in the past if you wanted to put "shields" on it, etc or if you wanted to scrape out the dip chip and make a simplified "dead bug" project. ESP32 stuff is tiny and abundant now. The Arduino IDE is excellent and very mature but this new thing is awkward in this space.
What?? Noo, I was realy happy when I heard CANBus is built in What difference does this make having CANbus half built in like esp32 does, if u still need something external) better to use, external canbus board like MCP2515 then?
Great question Arduino Uno R3 has a EEPROM with 100,000 write cycles. Arduino Uno R4 has no EEPROM, in fact has a virtual EEPROM utilizing the flash memory itself which has also 100,000 write cycles. In theory the flash memory could endure longer if there was wear-leveling in place. However looking into the source code, I did not find such a mechanism.
I’m surpassed they went with that chip (and no, it’s not a complaint) given that the STM32 line could cheaply and easily do the same with more memory, higher clock speeds and at least feature parity. I have been programming STM32s, PICs, AVRs, and an assortment of MCUs since I don’t know when. So I know STM32s are excellent candidates.
As far as I know, there are no STM32 microcontrollers that operate on a 5V power supply. While some STM32 models are 5V tolerant, it seems Arduino opted to maintain full compatibility with 5V I/Os, which may have limited their options quite significantly.
@@playduino There are indeed a good, but incomplete selection of 5V tolerant pins on some STM32s. Also, I recognise that 5V logic is well into its pensionable age but that Arduino has kept it to continue compatibility. Maybe it's time to define a new 3.3V standard for Arduino to go forward. OTOH, I just learned of a Cortex M4 that runs at 5V for retro projects, and that will come in handy. I guess we learn every day. Thank you.
I think this makes sense as a choice for Arduino purely for maintaining 5V logic compatibility while offering more processing power in a form factor that a lot of people still use. But it's still a weird choice. It's not like anyone was using Renesas MCUs in the hobby world already, so this is a pretty niche ecosystem with low compatibility for libraries. I also honestly don't understand why anyone is still using the Uno form factor. I think they should have just left it at the R3 and stopped further development on that line. The Uno is such a huge board with a bunch of empty space on the PCB, i can't imagine a situation for my projects where using one would make more sense than using a Nano or something. I'm honestly also surprised that they went with the Renesas chip when there are options like ATSAMD51 out there. There's a well developed ecosystem of boards and libraries that are already compatible with those and I'm pretty sure there are 5V tolerant SAMD chips, although i don't remember exactly off the top of my head. And of course there are other great choices like ESP32. I just feel like there were better choices available, I'd love to know why they chose the RA4M1.
I don't understand why people still buy Arduino boards. They're huge, expensive, have all the limitations covered in this video including being incredibly underpowered, and for ages had this terrible big barrel plug that you still carried around even if you didn't live in the 90's. I don't know why anyone would buy one instead of an ESP32, or an ATmega board if they really needed low-power.
they could have, but this would have made it more expensive for everyone, so I guess its fine to keep the current limit in mind and add a transistor to your project if its required by your project
For a few pins maybe, but for pins that are bidirectional that's not so suitable. The current limit also shouldn't be an issue for interfacing to peripherals, and you can get low current LEDs that need just one or two mA if you want to trivially add some status LEDs, so it's workable. Still prefer STM32, ESP8266 or 32 though :)
Everyone destroyed at least one Arduino. Fortunately, you could swap the ATMega chip and be up and running again. To do this with the Renesas RA4M1 is a bit more difficult. And all the nice ram upgrades are great, but the big reduction in pin output in mA, makes it not worth for me. I have long switch to the ESP32 eco system and see no reason to go back to Arduino...
Great board but the removed the crystal rendering it useless for my application of turntable control via SimpleFOC. Tried one and sadly had to send it back. Maybe future coding might make is useful. Mr R3 got .05% wow&flutter vs over 1% with the R4. Again beautiful board but not for all applications.
Might be related to this: www.renesas.com/en/about/newsroom/renesas-announces-investment-popular-open-source-company-arduino-access-huge-developer-community
Too little too late. After working with Arduinos for years (including my own bareboard variants, some using the 1284 instead of the 328), I have basically stopped using them altogether. I still use the same IDE, but my boards tend to be around the ESP32-S3 now. Onboard WiFi and Bluetooth, 240 MHz, up to 32MB Flash (WROOM-2), built-in MMC (faster and bigger SD cards), etc. etc. etc. I now have a feature rich webserver and NAS in a very small package.
I kind of dislike that they switched from an 8 bit AVR to a 32 bit ARM architecture. Maybe I'm weird, but I associate the Arduino Brand Names like Uno, Nano, more with the CPU architecture than with the form Factor. But I also like to expore assembly code so may not surprise that I'm so pinned on the architecture. Anyway disadvantage the switch in architecture is that any code directly interacting with the CPU registers will need to be rewritten or use Register Emulation like the Arduino folks did with the Nano Every. But the Nano Every is still AVR, register emulation across architectures is not really feasible.
i just stumbled across the channel, and immediately subscribed. One criticism is that your face is everso slightly too low in the video composition which seems a bit... off...
Sorry, but while the Arduino brand innovated at the start, they have progresively been overtaken by other manufacturers. ESP8266, ESP32, RP2040 to name but a few. This just seems like the old Apple Marketing - "look at our flashy new flagship product, it's more expensive, it has third generation components and runs at a fraction of Android competitors, but it's still better, becaue we say so." The Teensy 4.0 runs at a whopping 600mhz and it's bigger brother Teensy 4.1 has tons more pins / peripherals onboard. Wake up Arduino - you are well behind in the tech race!!
Everything great, exept the soldered MCU No, just no, why not put it in a socket, of course its not dip socket, but a different type of socket What people that used arduino did was they programmed their ATMega in arduino took it out, then into their own project And now u cannot do this anymore (at least not as easly)
HEY! I LOVE Goldy! 🐠 And I am pretty sure she remembers me when I get home from work. Pretty sure. I think. I give her 8 bits of food and she likes that. 🤗☺ 😒 😉
4K is so beyond common at this point on cameras that your comment comes across as foolish. Also you would still have the same critcism for focus at 2K or 1080 .. so say what you really want to say and stop wasting everyone's time.
@@highpraise-highcritic The end result is still 480p in places. Also, it's not too common for hobbyists, since 4K60 is still an expensive barrier for filmmakers.
@@graealex I know you aren't flipping this discussion to the end user statistics to try and not be wrong ... 😂 You were dunking on the content, not making an empirical observation of the youtube user base. Also why skip over the obvious 4K30? or even 2K .. you wriggle more than a worm trying to be right.
@@playduino No need to give you examples. The clock gains over 2 minutes per day. I searched the Arduino forum and found that other people have the same problem.
@@ipendlebury The really strange thing is that there are pads on the PCB for a 32.768kHz xtal and associated load capacitors. But they aren't installed. Seeing as how cheap these parts are this is a baffling omission - especially considering the price they are selling this board for. Since there is no xtal, the Arduino core for this board configures the RTC to use the low-frequency internal oscillator - which according to the Renesas datasheet is nominally 32.768kHz - but has an allowable range between 27.8 and 37.6KHz (fLOCO on page 57 of the datasheet) - so in principle it could gain or lose 9 seconds a minute and still be in spec. Why are they even advertising this as usable?
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
Okay, fine. But they shouldn't have called it a UNO, it's a completely different beast. It's just going to cause headaches for anyone familiar with the old UNO. Very dumb move.
my thought exactly
Good point
Yap! Almost as dumb as this new crappie RUclips new app that was just forced installed on my S8 tablet this morning. What a shty move. I hate it.
Good Lord, it is almost as good as ESP32!
Ohh, Yes!
The wifi version includes one
I don't know if this is sarcasm, but it's nowhere close to the performance of an ESP32
Different use case, though. The Arduino boards support 5V shields, have a wide range power supply, quicker compile time and better peripherals (for instance, a linear ADC).
@@solwidotnl that really doesn't come across in this video
We made a board using the Renesas RA4M1,
Added optocouplers on all 13 IOs so we can input up to 32V.
Also added 13 transistors to control mosfets /relays.
For the Analog pins, we added some voltage divider circuits so we can read up to 36V.
The Can is very easy to use we simply added a Sn65Hvd with choke and capacitors, we manage to read machinery Canbus and activate modules.
We are currently trying to add a RF module to the board as well as a Canbus display.
We had to change the renesas Buck converter since it is absoulte trash and really hard to solder.
We love the ra4m1.
:) nice. so output current is not an issue any more in your case. You could add an ESP32 for RF (WIFI / Bluetooth) like Arduino UNO R4 WiFi does it.
@@playduino We want to actually sell the product so we needed a FCC approved Radio frequency module. We went for the RN2903 from microchip.
@krib1887 esp wroom and wrover modules (like on Arduino WiFi) should also be precertified
My hot air station laughs at the "inability to swap chips". I still don't want one though. ESP32, RP2040/2530 or even good old Arduino Nano (the Elegoo clone ones) are my choice these days.
Aye just fixed one from work with the qfn for the u2 and the 328p.
Sounds awesome until you get to the pin current limits. That means you’ll need external transistors or mosfets to drive even moderately powered chips.
What??
What chip requires an input current of more than 8mA??
@@BartVenneker any LED, any 7400 series TTL chip, lots of sensors, etc.
I don't see the sense in continuing this core line. I've retired all my atmel cores over 2 years ago in favor of the ESP line of microcontrollers. Over the years I've accumulated just about every form factor of arduino modules all of which are now rotting in a box. Life is too short for all the devices being spung on us. I now standardize on the esp32C3 for battery based sensors, esp32S3 for hubs and esp32 for bluetooth audio (for the A2DP). For wearables I use the nrf52480 family.
I regret buying it. Many popular libraries won't run on it. Meanwhile the inexpensive ESP Wroom32, utilising both cores at 240mhz. Or how about the Teensy 4.1? 600mhz overclock? 1ghz Overclock?
MHz, not mhz!
I don’t think I’ve ever spec’d my components based on clock speed. 48Mhz vs 1Ghz is a chisel vs dynamite, something’s gone horribly wrong if that’s what’s been picked. What I’m considering: price buying in bulk, availability, power consumption, instruction set, pin counts.
@@Comonad I see. Clock speed is critical for me since my projects are generally music hardware. Latest project needs a good clock speed for the TFT graphics as well. In fact making use of both cores of the ESP32 was essential. 240mhz x 2. ESP Wroom 32 is very affordable. Teensy and DaisySeed not so much. Would have to be very special music projects for either of those two devices. I started some of my projects on the Uno R3 and then shifted over to ESP32.
The thing is: Arduino is produced just for hobbyists. Esp32 are industrial mc that are used by the millions in all kinds of devices, and industry makes sure that this mc family is always up to par. I thank Arduino for providing me with the first steps but honestly this platform today is light years behind while at the same time ridiculously overpriced. Good ESP32 boards today, obviously with Wifi, BLE, efficient deep sleep and 16MB are below €3 and fully support 5V peripherals. And they are just as simple to program as Arduino, even ArduinoIDE would work (although I strongly recommend platformio or better yet esphome). Don’t be trapped in the old Arduino World.
@bhambholeYes indeed. Teensy 4.1 is quite powerful especially when you consider it can be overclocked.
The R4 is something that in the past, I would have bought one just to put it in a nice case to display on my shelf. The way the economy is now, I can't really justify the expense for something I probably won't use. Like others have said, I'll just use the ESP32 or a Pico W for 1/4 or less of the cost of the R4.
First time viewer. Definitely a SUB-worth video Arduino "Give'ith & Take'ith away? But still COoL. Cheers from So.Ca.USA 3rd house on the left (please call before stopping by)
I was curious, started with Arduino originally. I am puzzled why people use Arduino these days. A 16MB single core ESP32-C3 costs less than €2, a dual-core 16MB ESP32 with high density ttf display and liion charger is under €5, with 16 gpios, and about 1/4 of the size of an Arduino. I am honestly just wondering. Btw you can of course run 5v peripherals. Gpios are 5v tolerant.
From my (limited) understanding, I think it’s in big part the name, how much literature there is about it, how much support you can get, and how many prebuilt libraries to interface with sensors/instruments. I think of it like how Apple devices are, much pricier, somewhat limited, but far more user friendly.
The way I’ve justified it is that if you’re brand new, and consider the hours spent on working on a project as a job with hours to be paid, even at “minimum wage” you’ll make back the money you spent tenfold due to all of the resources easily available for Arduino.
Not to say that ESP32s don’t have enough resources, but with arduino it’s a whole lot easier to find what you’re looking for without having to learn about things like EEPROM vs flash vs sram, or CAN vs I2C vs JTAG vs USB… (repeat ad nauseum)
@@kurtschreiber8833I hear you, and I agree. I went the same path, and there are tons of things I deliberately miss out on because - like you say - I feel comfortable with what I know and am proficient with. That said, having done this journey with Arduino and esp32 myself, I meant to encourage anyone to tackle esp32. In retrospect, it wasn’t hard at all to make this transition, and I literally never ever came across Arduino sample code that wouldn’t also run on esp32. All it takes is a bit more understanding about gpios, and occasionally adjusting the gpios numbers. That necessity started in my Arduino days already when then newer Arduinos like NanoEvery required this as well. In a nutshell, esp32 have been a pleasant uplift because of price, wifi, and finally no more out of memory issues. I didn’t mean this ideological, and when projects run fine on Arduinos, then that’s great. I just started to feel bad seeing relatively weak Arduino boards sell for >$10-20 from „brands“ when there was really no innovation investment anymore in this ecosystem in the past decade, and generic boards perform just as good at a fraction of price.
@@twr4641 you said it perfectly, I completely agree that people should bite the bullet and go for esp32 from the start/as soon as possible. I’m still new to esp32 and the majority of what I know has been through troubleshooting circuits at my job or reading up on things in my off time.
It’s reassuring that most libraries that run on Arduinos also work with esp32 boards! I’ve only built original circuits/projects on arduino knockoffs but I’ve been doing research for my next project which definitely needs an esp32 instead of an arduino dev board.
I had read in the past that this isn’t usually the case but maybe it was someone biased/unknowledgeable or it’s changed since I read that (it was a while ago).
@@kurtschreiber8833 I switched from ArduinoIDE to VSCode/platformio once code became more complex. It‘s a learning curve coming from ArduinoIDE but pays off in no time. The library manager in platformio knows the type of mcu your project uses, and can often find similar libraries in case you do run in the unlikely issue that a particular component/example uses Arduino-specific libraries. You are right, you frequently read about such issues. To me it feels these might be from the early days when esp32 were new and exotic.
Honestly, I TA'd for a few semesters in what was basically a sophomore arduino class in college. The buck converter is really nice, but the maximum output current is going to cause headaches for years to come. I don't know how many people I've seen power a tiny 6v DC fan directly off an arduino pin or light up 5 LEDs on the same pin. I mean, they're sophomores, it's hard to fault them (in many cases these were mechanical engineers getting their first exposure to C++ or building a circuit that wasn't provided in a schematic) but these changes are going to have some real knock on effects for schools. I've chased down some funny issues back then, it would get old explaining to a student why they need to buy a new arduino after accidentally shorting a pin to ground.
Wow. A swappable Chip with a higher current rating is golden in your case
Tbh, I don't even know why to use Arduino, especially original one. Raspberry Pi Pico is much cheaper, has choice of using more SDKs (C++ cross compiler and some tools, Arduino, Micropython, maybe FreeRTOS, Zephyr, ...), extra wifi/ble is for like 1.5EUR, it has way more RAM and Flash, less EEPROM, much faster CPU. C++ and Python code can be prototyped at PC.
I like Arduino Pro Mini for some battery powered projects, but I'm getting curious about Nordic Semiconductor nRF52 line.
Cool. The 14bit ADC could interest me... but wait I'm still using my Duemilanove which I bought when it first came out. DC Current per I/O Pin:40 mA, And on-board FTDI. And a proper big-boy Type B connector. They don't break! And I can even pronounce Duemilanove properly.
I love my Duemilanove!
I almost bought it, but in Canada the wifi version is way too expensive. I can get esp32 wroom for 10 cad but r4 is 60 cad
Without setting my house on fire...decent feature...Very tempting.
I picked up one of these only because it is almost alone in being fast + 5v level + Arduino. I am using it to interface with an ancient Casio computer, and level converters + ESP32 did not work with its non-standard I/O. Also of note is that the new chip is a whole other world from STM when you dig below the Arduino libraries.
The VREF pin on the Arduino Uno R3 is used as the reference voltage for the analog-to-digital converter
So you may connect it to 2v to get the full ADC resolution over 2volt in stead of the default 5v
Yeah thankfully they kept the VREF pin on R4
Did anyone notice the map of Italy on the bottom side in one of the corners? Complete with both islands!
Also, ChatGPT does a good job programming the led array.
the map looks nice, I overall like the design of all Arduino boards, they are doing a great job.
I need to check out my R4 Wifi :)
I like the upgrade in compute. I think I'll get a couple to experiment
They should have put a removable jumper on the LED pin13 circuit to remove the LED and full utilization of pin13. The reduced power on I/O pins and soldered in micro are deal breakers for me.
Agree 👍
I think it outgrew its from factor. It was ok in the past if you wanted to put "shields" on it, etc or if you wanted to scrape out the dip chip and make a simplified "dead bug" project. ESP32 stuff is tiny and abundant now. The Arduino IDE is excellent and very mature but this new thing is awkward in this space.
You still need an external transceiver to use the can bus
True!
Like a having a cell phone while traveling using public transportation, with a positive outlook, right?
🤔🤣✌
@@playduino Thanks for this video! I LOVE Arduinos!
A very nice and honest review of the R4 Uno, thanks.
What??
Noo, I was realy happy when I heard CANBus is built in
What difference does this make having CANbus half built in like esp32 does, if u still need something external) better to use, external canbus board like MCP2515 then?
Do Esp32 Lyrat Mini next time 😊
I got Raspis too but when I want to do something I try to make it work with an arduino
I heard about earlier iterations of the EEPROM being very limited in its write cycles. How does it fair with R4?
Great question
Arduino Uno R3 has a EEPROM with 100,000 write cycles.
Arduino Uno R4 has no EEPROM, in fact has a virtual EEPROM utilizing the flash memory itself which has also 100,000 write cycles.
In theory the flash memory could endure longer if there was wear-leveling in place. However looking into the source code, I did not find such a mechanism.
@@playduino If there is no current method to wear-leveling, suppose that may be your next video topic?
Nice topic to dive into for sure 👍
The CAN support sounds fun, I've always threatened to make a thing to see what my car is thinking.
Also first?
I’m surpassed they went with that chip (and no, it’s not a complaint) given that the STM32 line could cheaply and easily do the same with more memory, higher clock speeds and at least feature parity.
I have been programming STM32s, PICs, AVRs, and an assortment of MCUs since I don’t know when. So I know STM32s are excellent candidates.
As far as I know, there are no STM32 microcontrollers that operate on a 5V power supply. While some STM32 models are 5V tolerant, it seems Arduino opted to maintain full compatibility with 5V I/Os, which may have limited their options quite significantly.
@@playduino There are indeed a good, but incomplete selection of 5V tolerant pins on some STM32s. Also, I recognise that 5V logic is well into its pensionable age but that Arduino has kept it to continue compatibility. Maybe it's time to define a new 3.3V standard for Arduino to go forward.
OTOH, I just learned of a Cortex M4 that runs at 5V for retro projects, and that will come in handy. I guess we learn every day. Thank you.
Oh, I see ... Kinetis KE1xF for example. not bad! thank you.
With these many tradeoffs, isn't it better to just use a ESP32 directly?
If your project works with 3.3V then probably yes
I think this makes sense as a choice for Arduino purely for maintaining 5V logic compatibility while offering more processing power in a form factor that a lot of people still use. But it's still a weird choice. It's not like anyone was using Renesas MCUs in the hobby world already, so this is a pretty niche ecosystem with low compatibility for libraries. I also honestly don't understand why anyone is still using the Uno form factor. I think they should have just left it at the R3 and stopped further development on that line. The Uno is such a huge board with a bunch of empty space on the PCB, i can't imagine a situation for my projects where using one would make more sense than using a Nano or something.
I'm honestly also surprised that they went with the Renesas chip when there are options like ATSAMD51 out there. There's a well developed ecosystem of boards and libraries that are already compatible with those and I'm pretty sure there are 5V tolerant SAMD chips, although i don't remember exactly off the top of my head. And of course there are other great choices like ESP32. I just feel like there were better choices available, I'd love to know why they chose the RA4M1.
Me too. It doesn‘t fully make sense to me
I have so many kicking about and it gets used a lot for teaching. It's a useful wee tool but i tend to do my own pcbs if i'm making something.
We chose Renesas chips because Renesas has invested in them.
I don't understand why people still buy Arduino boards. They're huge, expensive, have all the limitations covered in this video including being incredibly underpowered, and for ages had this terrible big barrel plug that you still carried around even if you didn't live in the 90's. I don't know why anyone would buy one instead of an ESP32, or an ATmega board if they really needed low-power.
could they have maybe used some transistors to amplify the available current at each pin
they could have, but this would have made it more expensive for everyone, so I guess its fine to keep the current limit in mind and add a transistor to your project if its required by your project
For a few pins maybe, but for pins that are bidirectional that's not so suitable. The current limit also shouldn't be an issue for interfacing to peripherals, and you can get low current LEDs that need just one or two mA if you want to trivially add some status LEDs, so it's workable. Still prefer STM32, ESP8266 or 32 though :)
Everyone destroyed at least one Arduino. Fortunately, you could swap the ATMega chip and be up and running again. To do this with the Renesas RA4M1 is a bit more difficult. And all the nice ram upgrades are great, but the big reduction in pin output in mA, makes it not worth for me. I have long switch to the ESP32 eco system and see no reason to go back to Arduino...
@1:12 Milk came out my nose. 🥛🤣🌊😳🤧😉
haven't looked at Arduino in a while but Jesus £25 for an Uno? 😂
Great board but the removed the crystal rendering it useless for my application of turntable control via SimpleFOC. Tried one and sadly had to send it back. Maybe future coding might make is useful. Mr R3 got .05% wow&flutter vs over 1% with the R4. Again beautiful board but not for all applications.
Why on Earth would they lower the throughput amperage?! 🤯
That simply reduces the backwards compatibility! 😠
The reason why Arduino chooses to use Renesas chips is because Renesas has invested in them.
Oh that is possible
tracxn.com/d/companies/arduino/__pTebmNyTTWfIkwprLaIa7jst5W9_B3KGiz6GjtCEp6g/funding-and-investors#summary
So it can't even drive an LED on a digital pin without pwm? That's a huge bummer!
Yeah, I wouldn’t risk it with PWM to be honest 😂
Sure you can as 1mA LEDs are a thing. I've found low current LEDs useful with battery projects for example.
Why such an exotic chip? Why not STM32?
Might be related to this:
www.renesas.com/en/about/newsroom/renesas-announces-investment-popular-open-source-company-arduino-access-huge-developer-community
@playduino ouch, thanks for the info!
Too little too late. After working with Arduinos for years (including my own bareboard variants, some using the 1284 instead of the 328), I have basically stopped using them altogether. I still use the same IDE, but my boards tend to be around the ESP32-S3 now. Onboard WiFi and Bluetooth, 240 MHz, up to 32MB Flash (WROOM-2), built-in MMC (faster and bigger SD cards), etc. etc. etc. I now have a feature rich webserver and NAS in a very small package.
Why doesn't Ardunio use USB-C for power like R Pi?
R4 does
I kind of dislike that they switched from an 8 bit AVR to a 32 bit ARM architecture.
Maybe I'm weird, but I associate the Arduino Brand Names like Uno, Nano, more with the CPU architecture than with the form Factor.
But I also like to expore assembly code so may not surprise that I'm so pinned on the architecture.
Anyway disadvantage the switch in architecture is that any code directly interacting with the CPU registers will need to be rewritten or use Register Emulation like the Arduino folks did with the Nano Every. But the Nano Every is still AVR, register emulation across architectures is not really feasible.
Agree, they shouldn’t have called it UNO
Thank you
..but it can take only 8milli amps per pin, which is a shame..
i just stumbled across the channel, and immediately subscribed. One criticism is that your face is everso slightly too low in the video composition which seems a bit... off...
Absurd power limits
Would choose a pico or bluepill over it for now
Sorry, but while the Arduino brand innovated at the start, they have progresively been overtaken by other manufacturers. ESP8266, ESP32, RP2040 to name but a few. This just seems like the old Apple Marketing - "look at our flashy new flagship product, it's more expensive, it has third generation components and runs at a fraction of Android competitors, but it's still better, becaue we say so."
The Teensy 4.0 runs at a whopping 600mhz and it's bigger brother Teensy 4.1 has tons more pins / peripherals onboard. Wake up Arduino - you are well behind in the tech race!!
Nice - this means some OS-less projects I do on Pi can probably be done on UNO R4. Buying one now.
Some of them for sure 👍
The SMD chip is kind of discouraging.
32 I want 256 :)
Arduino uno + rp2040 would be cool
But it would be 3.3v tho
A RP2350 would be better.
@@SpeccyMan absolutely 👍
That R4 seems to be a little big power-tool for our projects!
Yeah I'll subscribe. this is the kind of stuff that makes this website still worth visiting. I gotta go see what kind of projects you have now.
So they made it better and way worse all at the same time.
Not being able to run 20 mA seems stupid.
I see no reason to buy an arduino anymore.
Oops.. no clue why use it? what for? $ or?
Everything great, exept the soldered MCU
No, just no, why not put it in a socket, of course its not dip socket, but a different type of socket
What people that used arduino did was they programmed their ATMega in arduino took it out, then into their own project
And now u cannot do this anymore (at least not as easly)
agree, I removed ATMegas countless times and integrated them somewhere :/
Yeah, but all of those improvements sound like expensive.
Rp2040. Why is anyone still using Arduino?
USB C instead of B is the WORST feature of this new board.... the small USB connectors ALWAYS break....ive never EVER seen a broken B connector
I agree. However, I think USB-C is at least more durable than Micro USB. However, with USB-C cables you never know what you're getting.
❤
i thought they would be uno cards that enforce hasbro’s stupid rules
HEY! I LOVE Goldy! 🐠 And I am pretty sure she remembers me when I get home from work. Pretty sure. I think. I give her 8 bits of food and she likes that. 🤗☺ 😒 😉
Conditioned response or memory?
Why make 4K video when everything is out of focus?
4K is so beyond common at this point on cameras that your comment comes across as foolish.
Also you would still have the same critcism for focus at 2K or 1080 .. so say what you really want to say and stop wasting everyone's time.
@@highpraise-highcritic still out of focus... regardless of how clever you are.
@@spasticjackson9578Who said it wasn't? I didn't even address whether it is or not. So what's your point in telling me?
@@highpraise-highcritic The end result is still 480p in places. Also, it's not too common for hobbyists, since 4K60 is still an expensive barrier for filmmakers.
@@graealex I know you aren't flipping this discussion to the end user statistics to try and not be wrong ... 😂
You were dunking on the content, not making an empirical observation of the youtube user base.
Also why skip over the obvious 4K30? or even 2K .. you wriggle more than a worm trying to be right.
It's a MINIMA. Please state that in your title.
I actually bought both minima and wifi
Just beware. The onboard RTC is not accurate, it's completely useless for my purposes.
Oh no, can you give us examples of applications where it's useless?
@@playduino No need to give you examples. The clock gains over 2 minutes per day. I searched the Arduino forum and found that other people have the same problem.
OMG 😨
@@ipendlebury The really strange thing is that there are pads on the PCB for a 32.768kHz xtal and associated load capacitors. But they aren't installed. Seeing as how cheap these parts are this is a baffling omission - especially considering the price they are selling this board for. Since there is no xtal, the Arduino core for this board configures the RTC to use the low-frequency internal oscillator - which according to the Renesas datasheet is nominally 32.768kHz - but has an allowable range between 27.8 and 37.6KHz (fLOCO on page 57 of the datasheet) - so in principle it could gain or lose 9 seconds a minute and still be in spec. Why are they even advertising this as usable?
Why bother esp32 much better and cheaper to.
R4 sounds like something i should not buy
I "Accidentally" pressed don't recommend this channel.
lot of crap ...stick to R3 chinese
When clickbaiting titles become so ridiculous.
pass
u funny bro