Geeetech

I have been told that the gsm module requires almost 2 ampere current when sending text message - can the battery handle this? what would be the backup time with a new battery?

One last question - what is the battery slot for? Can I use it without the battery?

This is great - thank you!!!

Actually I am using a pcb on the R3 and will not be able to mount the as shown in the picture - I will need to attach them through soldered wires, if you can let me know which wire will go where.

Thanks,

Khurram.

Hi,

I have solved the problem - apparently there was an error in the code which was not allowing it to be uploaded! Sorry for the inconvenience.

Can you please send me the wiring diagram to connect the GSM module to the Arduino R3.

Thanks.

Khurram.

1- Board Type (Arduino Mega 2560) and Com port (Com 8) are correct.

2- Nothing is attached to the R3 when uploading the code.

3- No effect of pressing the "Reset" button! The IDE remains on "Uploading...", green status bar stops approx 90% to finish, "ON" LED keeps lit up, "TX" & "RX" flash for a ...

Hi,

I bought 5 of your Iduino Mega R3 from Ali Express (alongwith with 5 GSM modules). These were shipped to an address in USA.

I have tried all 5 Iduinos but can't get them to work. They randomly accept the basic LED flashing code (sometimes this works, mostly I get an error even when uploading ...