RGB Matrix Panel Drive Interface Board for ESP32 DMA

10 reviews for RGB Matrix Panel Drive Interface Board for ESP32 DMA

1. Charly86 (verified owner) – January 27, 2021

   I’m fan over years of electrodragon’s products but this one I don’t have words to describe this crappy one, .

   – First, lot of hand soldering connector and they should have been made by a rookie, not nice, even not sure they will do the job (if I get this to work)
   – We don’t know which side to plug ESP32, should have been complicated to put a picture with the device plugged in so we can know how to plug?
   – So trying to match with silkscreen pin name to plug ESP Pico Dev kit? no way, no silk on PCB, don’t try also to read 5V or GND on big connector there is no silk either
   – So my guess, check the powering and placing on documentation? no way either, no documentation except for software configuration.

   Going immediately to case “things to get out one day when it will have basic documentation”

2. 3 out of 5

   Chao (store manager) – January 27, 2021

   Hello!

   Sorry for the bad documentation ! We are indeed not doing well no this.

   Please take a look on this video, https://youtu.be/sVVVZQoz2u4

   For PICO pin descprition please only change CLK to 21, and pin D to IO22, if you don’t use E-line, that is all, no need any extra soldering works. You can upload the code, run and get the same result.

   The USB port should on the same side of the DC power port.

   I am not sure anything else if still not clear, if so please just let me know. The PCB silk print is indeed crap, we have to fix on the next version.

   Thanks for the feedback!

3. 3 out of 5

   Charly86 (verified owner) – February 1, 2021

   Dear Chao,

   Thanks, it’s so much better with a video :-).

   May I suggest adding I2C “classic” pinout (VCC/GND/SDL/SDA) to be able to plug something like that
   https://www.electrodragon.com/product/ambient-light-intensity-sensor-tsl2561-breakout/
   to control luminosity, would be awesome
   Thanks

4. 3 out of 5

   Charly86 (verified owner) – February 1, 2021

   Chao,
   Would you mind post the schematics somewhere, I just spend some time to get some other GPIO of the Pico D4 (to add sensor) wired but looks like they are not wired on external header, only the one for DevKitC correct?
   thanks

5. 3 out of 5

   Chao (store manager) – February 1, 2021

   Hi, thanks for the suggestions!
   Will add the I2C port, also it is necessary to add logic shifter for logic level. This will be done as the final verison.
   Schematic added to here: https://www.electrodragon.com/w/ESP32_DMA_RMP
   We usually don’t know what documents is needed or what information is missing, if you need please just drop message or email. Thank you again!

6. Charly86 (verified owner) – February 1, 2021

   Chao,

   Many thanks, that is was I was suspecting, GPIO34 (and others) of the Pico are not routed anywhere (I mean the external header GPIO34 is connected to DevKitC GPIO34 and NOT also on Pico GPIO34. Good to know
   Awesome for level shifter nice idea. If you need beta testers, I’m in.
   By the way connector to plug to Matrix is not really robust (and too high) may be something like that will be better.
   https://www.aliexpress.com/item/32948722278.html
   From my point of view, It would be better to have option to buy with this connector not soldered, because lot of time one of these works perfectly
   https://www.aliexpress.com/item/32656684183.html

7. 3 out of 5

   Chao (store manager) – February 2, 2021

   Hi Charly86, Yes, thank you for the feedback again. This board is built quick and we did only focus on the devkitc, if you use a devkitc you can use all the expand pins. We will fix this for PICO pins, also for the connectors. But the short connectors won’t work, it has interferences with the RGB panel, you never know if the connection is good enough or not. Thank you again. Once new board is ready I will arrange to send you free samples.

8. 4 out of 5

   Charly86 (verified owner) – February 3, 2021

   Chao
   Many thanks,
   Just take a look on this, I created this shield some time ago https://github.com/hallard/WeMos-Matrix-Shield
   Could be interesting to have footprint for the LDR going to analog pin, you just need to add one 10K resistor between analog input and ground and then put LDR between analog pin and 3.3V. Cheap solution to control matrix brightness from ambiant light. I’ve done this on you board I received and it works fine, I’ll post a picture later and a sample code to main repo.

9. 3 out of 5

   ErikW. (verified owner) – March 27, 2021

   The Matrix Drive does, what it is supposed to do but..

   I wasn‘t able to get a I2C port work simultaneously with the Matrix.

   Since my only gole with the Drive was to display CO2, temperature and humidity, I don‘t know what to do with this Matrix Drive.

   I will write a new review, if I find a solution for this/

10. 3 out of 5

    Chao (store manager) – March 28, 2021

    Hi ErikW, The board lead out all pins for devkitc, but not for PICO
    If you have problem to use the other pins, please use esp32 devkitc, or please wait for our next version. Sorry this is not clear in the product description. If you need please contact us by email for free new version.