SIM7000 - Serial interface getting "Faile to set baud rate" using example code
PD2023 2023-04-27 06:30:54 409 Views3 Replies hi
I'm using the example code from the Wiki here: https://wiki.dfrobot.com/SIM7000_Arduino_NB-IoT_LTE_GPRS_Expansion_Shield_SKU__DFR0505_DFR0572
and it's not able to set the baud rate.
Notes:
Using an Arduino Uno R3
I've verified that the switch is in the RX→ D7 TX→D8 positionI haven't modified the code from the wiki at allI don't have an external PSU connected, but it dose appear to be powered up via the Arduino. I don't have a suitable one available at the moment.
My question is: Do I actually need the external power supply? If not, what else might be wrong?
Thanks for any help or suggestions!
This wasn't Solved! I'm posting again because I can't see a way to remove the solved tag. I'll use the same title so it turns up in the same searches
PD2023 Check whether an external power supply is connected. Input Voltage: 7-12VDC (VIN range: 6-20V).
Pls see the sim7000 NB-IoT Expansion Shield FAQ【DFR0572/DFR0505】- DFRobot Forum
jenna Here's a screenshot of the Arduino IDE Serial Monitor output for reference
PD2023 
