Connect SIM800C to PC via USB TTL UART

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See video for images showing wiring. The serial baud rate is 9600 Once connected I test it using putty, and entering AT which responds with & and ATI which responds with &r14.18' Note that the TTL cable in this video is a 6 Pin FT232RL USB to Serial Adapter Module. It is rated at 3.3V which is not enough to power this module. I now power it using a 5V pin from the Raspberry Pi and it now registers on the GSM network.

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