Hello,
Trouble with this module purchased from DigiKey…
Module: 1188-NB-IOT-BC660-ND (Dev kit, product page here.)
I’ve been working off of this pin diagram, even though it’s the BC66, not 660. Best I could find.
I’m using a 1nce SIM card, confirmed to work with a previous module (SIM7028)
Pin Wiring:
3.3v and VCCB → 3.3v power supply
Both GND pins –> GND
Using RX/TX_MAIN for UART
AT Commands work (using an ESP32 WROOM as a UART bridge)
AT returns “OK”
AT+CPIN? returns “READY”
AT+CSQ always returns “99,99” (aka, no signal?)
Tips on what I’m missing would be greatly appreciated. Thank you.