Sim900a Gsm Module Power Supply

I want to power gsm sim900a with lead acid rechargeable battery 12v 1 2ah.

Sim900a gsm module power supply.

The gsm sim900a module interfacing with nodemcu esp8266 and esp32 will be explained in one of my future articles. How to give power supply to my gsm module with the battery. My battery is. There are a few things that you should take care o.

The sim900a gsm module has an operating voltage of 3 4v 4 5v. Power up your gsm by connecting it to arduino s 5v and gnd picture 3 3. The sim900a can search the two frequency bands automatically. Now wait for some time say 1 minute and see the blinking rate of status led or network led d6 refer picture 5 gsm module will take some time to establish connection with mobile network 5.

Gsm sim900a power supply. Gsm sim900a power supply. The voltage regulator i am using is l7805 which gives a regulated output voltage of 4 9 v. Although it has a power supply pin which can be connected with the arduino s 5 volts.

How should i design the circuit so that i get 3 2v 4 8v with 2a for proper gsm module operation without destroying any components. In this tutorial our gsm module requires a 12 volts input. The gpio pins help to perform the simple and advance i o function. As i said earlier the gsm sim900a module has no onboard voltage regulator.

Typical power consumption in sleep mode is 1 5ma. They all have different input power supply specs. As i said earlier the gsm sim900a module has no onboard voltage regulator. The gsm sim900a module interfacing with esp32 will be explained in one of my future articles.

You need to double check your gsm modules power requirements. It draws high current upto 2a when transmitting data so i would advise using a good quality power supply with capacity of 2 5a 3a. All pins give the maximum output equal to the power supply which is useable to control most of the devices like sensors and other modules. I am interfacing simcom s gsm module sim900 with arduino.

Sim900a gsm module features. In starting days it worked fine. But now it is working only on the ac to dc adapter 12v that is why i bought 12v rechargeble battery. Picture 1 and 2 2.

Insert your sim card to gsm module and lock it. Check the power requirements of gsm module gsm modules are manufactured by different companies. Sim900a gsm module pin configuration descripton gpio pins. My gsm sim900a modem is.

So we feed it using a 12v 1a dc power supply. Although it has a power supply pin which can be connected with the arduino s 5 volts.