Power requirements are probably the most common issue with the SIM800L. This board draws a maximum of 2 A with an input voltage of 3.7 V to 4.2 V. This means you must not connect its pins directly to a 5 V Arduino! It doesn’t even run on 3.3 V. However, its TX and RX pins are 5V tolerant.

The better approach is either to use a regulator or just have the SIM800L draw from a Li-Po battery.

If selecting a voltage regulator, I recommend the LM2596S regulator module.

3 in stock

Categories : General, Cellular

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Invent SIM 800L is a mini-GSM module that offers 2G GSM and GPRS data. Now also in a bundle with ThingsMobile SIM card. The module has a small size and low power consumption. Twice the size of a coin and 1mA in sleep mode.

It uses a serial communication interface, supports 3GPP TS 27.007, 27.005 and SIMCOM extended AT commands. It also supports A-GPS technology, which helps to maintain the indoor position of the mobile network.

Compatible with Arduino Uno, Arduino Mini, Raspberry Pi. A mini GSM antenna is included, but an external power supply is required.