Guru
Joined: 05/10/2019
Location: United KingdomPosts: 9196
| Posted: 10:11am 16 Jun 2022 |
I find it interesting as I've never had that problem at all. I've had two microSD cards that wouldn't work via an adapter in a ILI9341 display, but that was fixed by shorting out the series resistors on the data lines. I've never had cards that didn't initialise though. The other thing is, it depends on the supply voltage circuitry. Peter uses a 2R2 resistor and a capacitor to allow some surge when writing. I wonder if that's done on your board?