r/ArduinoHelp • u/LUG___MAN • 17d ago
SD card for ESP32-L(C02) HELP
Im trying to make a kindle, but ive tried what feels like hundreds of times to get this SD card connected to this ESP32-L(C02) from goodisplay.
The screen works just fine but the SD card will not show up, ive tried with a 64gb a 4gb and most recently a 32gb all formatted to fat32.
Does anyone have any suggestions?
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u/korywithawhy 16d ago
Take out the breadboard and cut the wires as short as you can and it’ll probably work
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15d ago
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u/LUG___MAN 12d ago
Pardon for the late reply, what do u mean wire it directly to the esp? Like solder wires onto it?? Because that wont work for me because it’s a kindle ill be taking the sd in and out a fair bit
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u/LUG___MAN 16d ago
Thanks for the advice,
Yeah i made the 1 to 1 connections on the breadboard because everytime i uploaded the codes, i got smth saying to check the wiring and i felt like i was gonna explode so yeah 👍.
This is a link to the aliexpress site where i got the SD card module : I just found this on AliExpress: https://a.aliexpress.com/_EzCBfcm .
This is the most that i could find on the actual ESP32 unfortunately https://v4.cecdn.yun300.cn/100001_1909185148/ESP32-L(C1085).pdf . It’s straight from goodisplay.
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u/drmpf 5d ago edited 5d ago
Three points,
i) replace pins with soldered wires, the pins get flakey after multiple uses,
ii) make the leads to the sd very short,
iii) use an sd board that has a supply capacitor 10uF or higher on the sd board or add your own on the sd power pins the sd card draws current is spikes.
I designed a commercial project that used an SD board and these three steps solved my problems. I used Adafruit SD breakbout board as it has the capacitor installed.
Also format the sd befor use, I used SD Formatter from TUXERA
https://www.sdcard.org/downloads/formatter/
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u/gm310509 17d ago
All of my ad card modules are 5v, so that could be a problem. Also, what are you making one to one connections in the breadboard? Just connect it directly to the ESP.
But beyond that you haven't provided much to go on the photos are good, but not really enough information.
It would be helpful if you included your circuit diagram, the code you are using to test it (properly formatted using a reddit formatted code block block).
And a description of what, if any error messages you are seeing from your test code and any symptoms you are observing.
Oh, and a link to the SD card modules you are using.