RXD – Receiver to the module – 3.3V Logic (To be connected to Arduino TX Pin. (LM2596 with a 9/12V 1Amp adapter input and it should be adjusted to 4.2V recommended). VCC – Power supply 3.4V to 4.4V with min 2 Amp. You can use an external antenna via an uFL Connector available on the module for a better signal reception. NET – Antenna pin for the module (Spring Type included). We will be using 5 Pins to connect with Arduino for basic operation. In this tutorial, we will see how to use SIM800L GSM module with an Arduino.Īt the backside of the module, you can find the pin details printed on it. Note: The SIM800L accepts only 2G (No 4G)
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