Voltage drop down with sim800L module

Other Hardware Motors, Mechanics, Power and CNC
1

Hi,

I am using a gsm module sim800 to do http post requests and after 2h the module stops working because of under voltage warning.
The module is this one http://www.ebay.co.uk/itm/SIM800L-GPRS-GSM-Module-Board-Quadband-QUAD-BAND-Antenna-for-MCU-Arduino-/321992759287

I am making a lot of HTTP POST requests in a row every 10 min with 5 sec interval between each request. I am using the Adafruit FONA library.

The module is powered on the 5V of an arduino mega.
It works perfectly but after around 2h it suddenly stops working.
How could I power the module better in order that it resists to the 2A current peak over time?

Thanks

2

GSM modules can take lots of current, you cannot power from the board's 5V regulator. Use an external
2A+ supply - then it'll be able to cope.

3

Thanks for your reply. Could you give me an example of power supply I should use then ?

4

One with an output current rating of 2 or more amps? No point recommending a product if
we don't know which continent you are on even!