R-pis are particularly hard on SD cards. I think they must be engaging in lots of writes in the course of operation. I have a number of projects that just use

R-pis are particularly hard on SD cards. I think they must be engaging in lots of writes in the course of operation. I have a number of projects that just use microcontrollers with SD cards, no OS involved, so no unexpected writes to the card. Some of them have been in constant operation for many years, and I have yet to see an SD card failure in any of them.