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hallard / WeMos-Matrix-Shield

WeMos ESP32 ESP8266 RGB LED Matrix Shield
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Panel is not working - issues with assembly - no instructions ? #9

Closed feiticeir0 closed 3 years ago

feiticeir0 commented 3 years ago

Hi Hallard !

First, thank you for the shield. I've ordered 3 from OSHPark. They are version 1.6

I've assembled one, with what I could gather from github - both from version with and without DMA. I'm using Wemos D1 mini ESP8266. I just see a random streaks of lines on the display. I've used 32x32 and 64x64 . I have 32x64, but haven't tested them.

I've tested with PXMatrix (the ESP32-HUB75-MatrixPanel-I2S-DMA is just for ESP32). I don't have any ESP32 Wemos like the ones you've described . I do have ESP32, but not wemos.

Any hint what could it be or how to assemble this version 1.6 ? I've used - don't know if it's ok or not, 10K resistor and 4.7K resistors. soldered an LDR, a 100uF capacitor (haven't soldered this one yet - it's placed there - because there's no hint on what's the negative side and the positive one - at least none that I can see).

Thank you

hallard commented 3 years ago

Would be helpfull to help if you could post a picture of what you've done.

This version works only with PXMatrix because wiring is not for ESP32-HUB75-MatrixPanel-I2S-DMA (even if you use an ESP32). For use this version

To do tests, you just need to solder the headers no components needed (except ESP of course). Better to add caps if ESP goes into reset.

feiticeir0 commented 3 years ago

Would be helpfull to help if you could post a picture of what you've done.

This version works only with PXMatrix because wiring is not for ESP32-HUB75-MatrixPanel-I2S-DMA (even if you use an ESP32). For use this version

To do tests, you just need to solder the headers no components needed (except ESP of course). Better to add caps if ESP goes into reset.

Hi ! Thank you Hallard. You're right. Here are some photos of the assembly.

IMG_20210422_185044 IMG_20210422_185050 IMG_20210422_185058_1 IMG_20210422_185126

Thank you

feiticeir0 commented 3 years ago

Hi Hallard. I'm going to close the issue.

I was hopping for some feedback, but I managed to solve this one. The assembly is well done. My problem is that I had some wemos d1 mini with the sleep solder blob on and that was messing the code and the wemos d1 somehow. Removing the solder on the PAD solve the issues. I discover because I've tried with another wemos I have around and worked perfectly. I've tested with 32x32 and 64x32 panels and both worked wonderfully. Thank you

hallard commented 3 years ago

Glad you had it working.

You need to remove big capacitor, it will really slow down light change, this one should be 100nF (unpolarized) only, but you also can remove completely and just let 10K resistor and LDR.

Also 4K7 R2 is only used for DS18B20 temp sensor, looks like you don't have it so this resistor is unneeded.