Creating Arduino Library for MAX7219 8x32 Dot Matrix

Link to my GitHub repository to access MAX7219 library:
github.com/akuzechie/MAX7219-...
Contents:
0:00 Introduction
0:23 Circuit Diagram of Implemented Project
1:15 Folder Structure of MAX7219 8x32 Library
1:50 Public Functions of MAX7219 Library
2:54 Example Sketch 1: Show Text & Numbers of MAX7219 8x32 Display
4:16 Example Sketch 2: Display Count from 0 to 99
5:00 Example Sketch 3: Display DHT22 Temp & Humidity
6:17 Example Sketch 4: Show Data on Multiple 8x32 Dot Matrix Displays
7:19 Conclusion

[@udominsee848]

Thank you very much.
From Thailand.

[@AnasKuzechie]

You’re welcome

[@moinshaikh6684]

Oh my god anas, you're so intelligent in the field of embedded system,

[@AnasKuzechie]

Thanks Moin, I appreciate your feedback

[@scottstevens7569]

Nice video and well presented. Creating and using then expanding an Arduino Library us very useful good job! Looking forward to more of this series. 🙂

[@AnasKuzechie]

Thanks for your feedback

[@Sekhar_Home]

I always admire the tutorial that you r giving.. thanks

[@AnasKuzechie]

Thank you

[@azzattar8422]

Merci pour les bonnes explications, et bonne continuation...

[@AnasKuzechie]

Thanks for your feedback

[@TechBerto173]

Awesome videos, just found your channel and you have interesting and very informative videos. I used assembly programming for my 8051 projects before and want to learn to program arduino in assembly also. Thanks

[@AnasKuzechie]

Thank you

[@novocanal7153]

Great Library. thanks

[@AnasKuzechie]

Thanks for your feedback

[@faridfarrokhnia1890]

It was a cool video as usual , Thank you for your nice and clear video.

[@AnasKuzechie]

Thanks for your feedback

[@moinshaikh6684]

Writing drivers for an embedded system is a not lesser than a dream for me

[@Drxxx]

super video

[@AnasKuzechie]

Thanks

[@noureddinebenakrim5458]

Hi Anas happy to see you again, nice video as always, can you do this with assembly language

[@AnasKuzechie]

Hi Noureddine, sure as soon as I can.

[@frenkkotarigan]

I have project about load cell and use max 7219 as a display
How to put the desimal result on the display?
Could you help me?🙏

[@IMRANKHAN-we9un]

Nice video Sir. You are on Top as always. Fantastic project. Exactly which I wanted from a long time . You are the Rare 'GEM'. Greetings from INDIA.🌹🌹💐💐
Can I use DHT11 sensor with same code ??

[@AnasKuzechie]

Thanks for your kind words. Yea, just replace in the sketch the statement DHT dht(5, DHT22); with DHT dht(5, DHT11);

[@IMRANKHAN-we9un]

@@AnasKuzechie Thanks a lot Sir for quick reply. 👏👏

[@deadcertainty4528]

Your videos are always excellent; thank you. I'd like to control a HT16K33 Display for alpha-numeric data, AND a MAX7219 to display various statuses using a number of individual LEDs (rather than a standard dot matrix display). Is it possible to address both a HT16K33 chip and a MAX7219 chip from a single Arduino, or would I need 2 Arduinos? If both can be controlled from a single Arduino, how would I set the I2C address of each chip in the sketch?

[@AnasKuzechie]

Thanks for your feedback. One Arduino, since HT16K33 uses I2C and MAX7219 uses SPI.

[@deadcertainty4528]

@@AnasKuzechie Thank you for your instant and most helpful reply !

[@lefauve]

@@deadcertainty4528 ​ @AnasKuzechie Just to be clear, you can totally use more than one SPI devices at once on a single Arduino, using the very same MISO/MOSI pins (you just need a different CS for each device). And you can also use more than one I2C devices at once, providing that you give each of them a different address (see your device datasheet to find out how to select address)

[@deadcertainty4528]

@@lefauve Thanks very much for your confirmation. I hadn't realised that MAX7219 is SPI rather than I2C. Now it's all clear to me how I can do both on the one device.

[@lefauve]

@@deadcertainty4528 FYI, you can have up to 127 different I2C devices at once, and there is no real limit for SPI but since you need a different CS pin for each, practical limit would be about 10-15 devices. For I2C, not all devices can use all possible addresses so for some devices you can only have 4 or 8of them at once. That should be enough for most of your projects 🙂

[@keeper1855]

Super video.Thanks!Can you show how to control relays you sing push buttons with esp or Arduino by Lora ebyte?

[@AnasKuzechie]

Thanks for your feedback. I do have videos in regards to ESP32 & web applications. On the other hand, I don't have the LoRa module.

[@keeper1855]

@@AnasKuzechie Thanks .

[@IMRANKHAN-we9un]

Sir ,
The Temp.⁰C & Hum. % symbols are shown in the display in starting as
⁰C 24.8 , %75H. How to correct them in proper pattern ?? 🤔

[@AnasKuzechie]

Reverse digit numbering. 1 becomes 4, 2 becomes 3, etc. This depends on how leds are connected to MAX7219

[@IMRANKHAN-we9un]

@@AnasKuzechie Sir,
I done it in advance only correction on display for 22THD to DHT22 but not affect the sensor readings.