Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

SIM800L is not working after disconnecting with PC

Arduino

2

17

1966

Log in to reply

rafitc99 @salmanfaris last edited by

@salmanfaris When connecting with PC. It will work well.
1 Reply Last reply
Reply Quote 0
salmanfaris @rafitc99 last edited by

@rafitc99 when powering with the LM2596 it's not sending message text right? but sending blank SMS right?
1 Reply Last reply
Reply Quote 0
rafitc99 @salmanfaris last edited by

@salmanfaris Yes.
1 Reply Last reply
Reply Quote 0
salmanfaris last edited by

Ok, then you need to check the LM2596 output current and voltage!
1 Reply Last reply
Reply Quote 1
rafitc99 last edited by

Thank-you @salmanfaris
It's solved.
Actually, It was my mistake. I didn't add a proper reset for MCU.
1 Reply Last reply
Reply Quote 1

Recent Posts

@codelery Awesome. That's great news. Kudos to @rafitc99 .

@codelery Please keep us updated about your project, looking forward to seeing it in action 🤩

• read more
C

@rafitc99 I changed the buffer and that solved the problem. Thanks a lot for coming to my rescue.

• read more
C

@salmanfaris I did change the buffer size and everything is working perfectly. Thanks coming to my rescue.

• read more
@codelery said in Help needed: Arduino Wireless Notice Board project:

I am using the hardware serial (pin 0 and 1 on Arduino Uno)

As @rafitc99 mentioned, you need to expand the Serila buffer, in the hardware serial also the Arduino board package implements a 64-byte ring buffer for send and receive on the hardware serial messages. So you need to change that to 256 as per your message length.

• read more
C

@rafitc99 The thing is that I am not using the SoftwareSerial library in receiving the message from the first microcontroller. I am using the hardware serial (pin 0 and 1 on Arduino Uno)

• read more

1 / 2