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I bought a GSM module, and I want to connect it with Arduino but I have a problem.

I linked GSM SIM800L with regular LM2596 12 V 2 VA I changed tension to 5 V, So far the GSM is working but if I connect TX_ARDUINO with RX_GSM the module enters in the loop of the restart.

The picture explains the montage.

Fritzing of LM2596, SIM800L and Arduino Uno

Greenonline
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asked Apr 15, 2019 at 11:45
8
  • How are you providing power to arduino? Commented Apr 15, 2019 at 11:48
  • I connect Arduino with my pc. Commented Apr 15, 2019 at 11:49
  • And your code...? Also, you shouldn't be using GSM in modern designs. Many carriers are turning off GSM services. You should be using (at least) an LTE modem. Commented Apr 15, 2019 at 12:06
  • You should separate the ground of external power supply and GND of arduino. Commented Apr 15, 2019 at 12:16
  • @Vaibhav How is that going to help matters? All that will do is break things further. Commented Apr 15, 2019 at 12:59

1 Answer 1

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Arduino Sim800l

Follow this tutorial on how to connect your Sim800l with Arduino.

answered Aug 30, 2019 at 15:48

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