0

I have this SIM900 board and working just fine. But i can't find a way to soft power on this board from arduino. I read for JP pads. They need soldering first, but from my board this JP pads missing. Know someone other way to soft power on this from arduino? enter image description here

Improve this question
1
  • Dielatin... Winner, Winner, Chicken Dinner!! Works a treat, been trying to figure this one out for sometime and there is nothing on the web about it!! So thanks for the solution upload!! Commented Oct 26, 2017 at 15:52

2 Answers 2

Reset to default
1

OK for anyone who has the same problem. I solved this by soldering a cable on the underside of the board on this pin (see image) on power button. Then I connect the cable to pin 9 on Arduino and run this on sketch: 

  pinMode(9, OUTPUT); 
  digitalWrite(9,LOW);
  delay(1000);
  digitalWrite(9,HIGH);
  delay(2000);
  pinMode(9, INPUT);

I don't know how it works, but it solves my problem.

enter image description here

Improve this answer
0
1

Near C6 and J15 you have 2 points. You need to solder it. Before soldering yon can hold wire on one of it (down pin , during code execution).

1]

Improve this answer

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.