UNO R4 Wifi with SD-Card

Official Hardware UNO Family UNO R4 WiFi
1

Hello everyone,

I am using the original R4 with the SD card reader from AZ-delivery. I have already tried 5V, 3.3V and various CS pins.
I have tested an official Sktech. After this did not work, I connected the SPI bus with

if (!SD.begin(chipSelect, SPI_QUARTER_SPEED))

slowed it down.
Do the modules work together?
I also have strange behavior on pin 7:
Sometimes low and high are mixed up. I don't change the hardware between sketches.

Regards

2

expand on that...

3

how so? you need to be more specific.

4

I would like it if you post a wiring diagram (or image) the error message you are getting and the code that you are using and me and my friends can help you from there.

5

As others mentioned, it would help if you specified some more details, like which adapter link would be good, picture, what pins are you using…