Im trying to get my dronecell up and running.
i have connected the cell through TX0/RX0 Ardunio 2560. Serial connections is working.
It respons to my AT command, but during startup it throwing CPIN NOT DETECTED.
I belive it not sensing the sim card.
+CPIN: NOT INSERTED
Tryed to remove the sim pin, and also with diffrent working sim cards.
Also tryed with several diffrent power supply.
I measured the SIM_VDD with my fluke, and during startup i got 1,1v.
However im not sure if my voltmeter is able to sense the peak correctly, due to short periode of time the VDD is powered.
It should be 1,8v / 3,0v / 5..0v depends on wich sim card im using.
Im using the latest Firm..
Any help would be great.
Im running out of options.....