Sim900a Gsm Module Power Supply

The gsm sim900a module interfacing with nodemcu esp8266 and esp32 will be explained in one of my future articles.

Sim900a gsm module power supply.

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. So we feed it using a 12v 1a dc power supply. In starting days it worked fine. First i have given power supply to gsm module from the arduino i e.

The voltage regulator i am using is l7805 which gives a regulated output voltage of 4 9 v. Gsm sim900a power supply. They all have different input power supply specs. But now it is working only on the ac to dc adapter 12v that is why i bought 12v rechargeble battery.

How to give power supply to my gsm module with the battery. Picture 1 and 2 2. Typical power consumption in sleep mode is 1 5ma. I want to power gsm sim900a with lead acid rechargeable battery 12v 1 2ah.

My gsm sim900a modem is. As i said earlier the gsm sim900a module has no onboard voltage regulator. Sim900a gsm module features. 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.

The sim900a gsm module has an operating voltage of 3 4v 4 5v. Check the power requirements of gsm module gsm modules are manufactured by different companies. 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.

Power up your gsm by connecting it to arduino s 5v and gnd picture 3 3. In this tutorial our gsm module requires a 12 volts input. The frequency bands also can be set by at command. The sim900a can search the two frequency bands automatically.

As i said earlier the gsm sim900a module has no onboard voltage regulator. I am interfacing simcom s gsm module sim900 with arduino. Gsm sim900a power supply. My battery is.

Although it has a power supply pin which can be connected with the arduino s 5 volts. 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. 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. There are a few things that you should take care o.

Although it has a power supply pin which can be connected with the arduino s 5 volts. Sim900a gsm module pin configuration descripton gpio pins.