Sim900a Gsm Module Power Supply

Gsm sim900a power supply.

Sim900a gsm module power supply.

In starting days it worked fine. The sim900a gsm module has an operating voltage of 3 4v 4 5v. Gsm sim900a power supply. So we feed it using a 12v 1a dc power supply.

Sim900a gsm module features. The frequency bands also can be set by at command. My gsm sim900a modem is. How to give power supply to my gsm module with the battery.

As i said earlier the gsm sim900a module has no onboard voltage regulator. 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. In this tutorial our gsm module requires a 12 volts input. But now it is working only on the ac to dc adapter 12v that is why i bought 12v rechargeble battery.

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. The gpio pins help to perform the simple and advance i o function. The gsm sim900a module interfacing with esp32 will be explained in one of my future articles.

The sim900a can search the two frequency bands automatically. Connect the antenna picture 4 4. I want to power gsm sim900a with lead acid rechargeable battery 12v 1 2ah. Although it has a power supply pin which can be connected with the arduino s 5 volts.

Although it has a power supply pin which can be connected with the arduino s 5 volts. Picture 1 and 2 2. Insert your sim card to gsm module and lock it. As i said earlier the gsm sim900a module has no onboard voltage regulator.

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. There are a few things that you should take care o. The voltage regulator i am using is l7805 which gives a regulated output voltage of 4 9 v.

They all have different input power supply specs. The gsm sim900a module interfacing with nodemcu esp8266 and esp32 will be explained in one of my future articles. My battery is. I am interfacing simcom s gsm module sim900 with arduino.

Sim900a gsm module pin configuration descripton gpio pins. Check the power requirements of gsm module gsm modules are manufactured by different companies.