It appears on the Thing91 reference board that the SIM_DET pin is used to drive the SIM mux control pin. Is that case? Is there more information on how to use this?
It appears on the Thing91 reference board that the SIM_DET pin is used to drive the SIM mux control pin. Is that case? Is there more information on how to use this?
Ahh I actually didn't look close enough!
The switch on the SIM holder drives that pin. Makes more sense now!
Ahh I actually didn't look close enough!
The switch on the SIM holder drives that pin. Makes more sense now!
The pull up resistor R49 is misleading. I thought it was to ground. Something to bear in mind for other folks implementing this circuit..