Hello jimmy, Thanks for the answer. I would like to have more control over the functions, but I think that does not work with the functions of the SD library. The further, I read audio data (every 2 ms 32 byte for a mp3 module). therefore I can not shut down the sd card for 2 ms. I still think that ...

I had some time today and have the behavior tested with an ESP8266. With the ESP8266 it is even so that after initializing the sd card directly consumes ~20mA (without io access to the card). SD Card Power Consumption.png But: the ESP8266 does not hang and can always initialize the sd card. Can anyo...

in my opinion the answer is related to the requirements: how much data do you want to send (bandwidth)? how important is a stable connection to you (all bytes arrive correctly)? do you want to have a radio or wire connection? There are e.g. SPI, I2C, Serial, Bluetooth, Radio. The fastest and safest ...

Hello everybody, I am new to this forum. I am writing here because I have / had several issues with the ESP32 and SD cards. 1. sd card reader keeps MISO line on HIGH -> other devices 'only' send 11111111 -> solved: faulty reader replaced 2. ESP32 stops responding, e.g. after 60 minutes reading from ...

If you have problems with bouncing (the signal jumps on many devices), you should install a de-bouncing. This can be electrical or in the software. I have already gained experience and the best way is an " encoder table ". Since you have two data lines (even if one is marked as a clock), you get an ...