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- Опубликовано: 2 окт 2024
- $2 for 5 PCBs (any colour): jlcpcb.com/?re...
This week's mailbag has a bunch of goodies:
- LED strips for my upcoming Christmas Tree Game.
- Some video lights for filming my next meetup.
- A quick look at a C-Sky Gentoo image.
- Sipeed MAIX mini review.
- RC2014 digital I/O modules for my upcoming Christmas Tree Game.
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Github: github.com/Mic...
Thanks for the mention Mick.
The Gentoo image is definitely a work in progress at this point, I'll post an updated image once things are a bit more sane.
I had a quick look at the 'go' source, and all that assembly language will require a bit of porting effort. I'm considering porting 'musl libc' but that will be further down the line.
Link in the description bellow? Hmmmmmm, nope, not seeing it :)
Hey. Is there any progress on porting Gentoo Linux to the C-Sky architecture?
Thanks, we are improving the document, and rebuild the maixpy to make it better.
YESSS PIXELS!
WS2812 leds are current limited to 20mA per color so 1200 x 0,02A x 3 = 72 A @ 5V . With 20% brightness and 1 active color you should still be locking at 5A current.
And the face detect model have direction, if you place upside down, it will have lower detection rate, you can try correct the direction
oi, yo mick, keep up the great work man! cheers
Thanks mate
Perfect timing Mick. I was just looking for some 2812s in a weatherproof package. Care to share the link? Please? 😀
Hi, Mick, the firmware default is 160M freq for low power consume, so it only can produce 80M pwm max. but we test the pwm is even goto 300M when set freq to 600M. here is the pic of 160M pwm(320M freq firmware): t1.picb.cc/uploads/2018/12/16/JUFW2K.jpg, and it is the firmware:drive.google.com/file/d/1WNxtq_bZRpBLnU3Rx0CT2fSoxnQTBiaJ/view?usp=sharing
Hey Mick,
With you and Dave showing off your SIPEED equiptment its been a total wind up since I have to wait for the 25th ;), I have the $45 unit backed and 2 of the $6 boards. Did you grab the gnu toolchain yet?,
github.com/kendryte/kendryte-gnu-toolchain
Support as you already mentioned for these buggers is fantastic, I do agree with the hackaday comments that for the price these are defintely in direct compete with ESP32 etc etc. Its been an exciting year ( and went way to fast ) ..
Looking forward to more video's and new things to come.
Another great mail video - Thx..... Can't wait for the Christmas thingy to go online 🎄🎄🎄
Great review, loved it!
I bought my mic array from sipeed and was looking for anyone who got a hold of one. Can you tell me what boards are compatible with the mic array? Only the dan dock you have there?
Theoretically, all boards are.
@@MickMake Thank you for your response Mick, i'm eager to receive mine! You got yourself another subscriber :) . Keep on with the good work!
Thanks mate
Nice item
Mick, The signal shouldn't degrade as each LED retransmits the signal. You just need external power every other strip so you don't get the voltage drop.
Indeed... once the signal is passed the first pixel it should be fine. I expect it was more the voltage drop over that extended run... it would probably have been fine if the extra voltage lines were also connected directly back to the PSU. This retransmit behaviour is handy if you are running the LEDs off too low a voltage to have proper high/low signaling per the datasheet... you 'sacrifice' one LED to get the signal boosted, and then all is good ;)
Yup, meant to say voltage degrades over the strip.
Sometimes I don't catch things in post-edits.
Degrades / drops. I have another video where I go into cable length / wire diameter affecting voltages on USB cables.
@@MickMake Oh no, you mean you're not a wiffy robot? :-P Yeah, longer the run, the thicker the gauge needed, regular injection down the strip, or at least linking the other end back to the PSU so it's effectively a ring. But the control signal should remain unaffected as it's been reprocessed by ever LED it passes through... assuming there is enough power to power the LED! ;) I'm currently putting off putting up a couple 30 pixel per m strip that will be pulling some 15A @ 5v at full intensity (unlikely, will probably turn alternate pixels off and do some colour temperature tweaking) - split into four strips, so need to run some decent wiring around to minimise the voltage drop.
Can you point me to the application code for interfacing the LCD that you used to interface with Sipeed MAiX Bit?
If you look on the sipeed website they have a guide and a library to use the lcd, camera and microphone array. All of the sipeed maix boards use the same chip with the exception of any boards that have the m1w instead of the m1, the only difference there is the m1w has wifi.
Edited- Website working fine now.
Do you know what display is used on all the MAIX Boards?
I would say a QVGA but still needs to be confirmed
Yup. Correct
Thanks :D
Care to make a video about _why_ you are a go-lang fanboy now?
Awww yeah I could.
@@MickMake Aye aye!
DOOOD!
Sipeed maix looks nice, need to check it out, will you be playing with it soon?
I'll be using it in one of my projects that has been on the back-burner for a while.
interference is synced with their moves
links to the products please ?
What if you plugged in a USB device with a Mic input onto the Pi and had your light strips reacting to music?
First
First!
Woot!