This was a surprise. I’m going through my pile of WeMos D1 Mini/32, uploading 12C scan to confirm they still work.
This came from a unit that has nothing, not even the pin rails:
Scanning…
I2C device found at address 0x39
I2C device found at address 0x3C
I2C device found at address 0x3F
I2C device found at address 0x42
I2C device found at address 0x4F
I2C device found at address 0x51
I2C device found at address 0x54
I2C device found at address 0x57
I2C device found at address 0x6A
I2C device found at address 0x6C
I2C device found at address 0x74
I2C device found at address 0x76
I2C device found at address 0x77
done
The only ones I recognize are 0x76, 0x77 and 0x3C.
This is one of the units that prompted the general fitness check. It’s screwy.