Robotics SIM900A 5V GSM Module for Arduino

Note : GSM required 5V 2A+ external power supply to start up and stable gsm signal.

Arduino board build in regulator around 5V 800ma only, required add on external power supply to gsm directly.



Specifications :

Size: 49mm*50mm

Weight: 38 g

Onboard two set power supply interface VCC5 5V power supply, VCC4 interface, 3.5v-4.5V power supply, optional power on self starting (default) and control start.

Serial port circuit: support for 3.3V single chip microcomputer

TTL serial port: support 3.3 and 5V single chip microcomputer.

Antenna interface circuit(SMA bend female port)





The computer can give early computer debugging USB module power supply, a very large amount of data under the condition of the recommended current more than 1.5A. Standby dozens of MA data can be set to provide dormancy, dormancy of 10MA low power.

Package Included :



SIM900A GSM Module *1



Tuitorial :

http://www.instructables.com/id/Using-the-Sim900sim900A-mini-module-with-Arduino-U/?ALLSTEPS

https://www.instructables.com/GSM-SIM900A-With-Arduino/