Unable to connect sim800l with network

sim800l

#1

Hi. Trying to connect sim800l with network but its not connecting. Led should blink 3times/sec but it is blinking slowly 9 time then turned off then 7 times then turned off again cycle is the repeated… Power source I’m using is 4v DC 2A. Another thing I’ve noticed is ground and network GND and NET pins are short is it normal?


#2

#3

Which pins are short, i didnt understand, please explain. Also look at the link David shared and make sure you have checked all the points mentioned.


#4

image

These pins ?
No, it isn’t. Be sure they are really shorted.

Before trying to get network, start with fundamental AT commands and go step by step.
If AT responds fine, try more. If no, look at the link i’ve shared.


#5

Yes both of these pins are short… Is it a hardware issue? What should I do to fix it.?


#6

You should connect to the pinout " NET" Antenna, there is one reason that you can’t find network on your device. Also say what did you mean short pinout “GND”.


#7

Network antena pin is direct connected with ground both are connected with each other multimeter is giving beep whenever I connect both of terminals. Both are short with each other


#9

Il have 2 SIM800C modules and both have approx 1,5 Mohms measured on multimeter.
Maybe you have burned yours :confused:


#10

Its working finally…followed all the steps tolled Ravi and Alexix… Shortened the length of wires its working now


#11

At commands not responding… Nothing happened no responce


#12

Yep, My bad. I was checking with probe touching metal case. There should not be a short circuit.
Thanks David. :slight_smile:


#13

Order another one, and follow exactly a step by step tutorial.


#14

Can you share the tutorial