Pronterface won't connect anymore Hi guys, I'm having trouble connecting my Prusa i3 to Pronterface. I have been printing for 6-7months succesfully. Last week I wanted to replace a fan and I got some sparks and ashort circuit I believe. Now when I try to connect to Pronterface it only says: ''connecting...'' I have attached a photo of my Arduino. Hopefully someone has some tips, any help would be greatly appreciated. Cheers, Imhotep https://reprap.org/forum/read.php?219,465662,465662#msg-465662 Mon, 20 Jul 2026 10:05:01 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?219,465662,742596#msg-742596 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,742596#msg-742596 VDX RAMPS Electronics Thu, 26 Jan 2017 16:16:10 -0500 https://reprap.org/forum/read.php?219,465662,742498#msg-742498 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,742498#msg-742498
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Traumflug
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LioLine
I don't understand what I should do after I opened the serial monitor ?
Press and release the Reset button. This should send the word "start" over the serial line. If there's just some garbage or simply nothing, try other baud rates. One can simply try all of them: 19200, 38400, 57600, 115200, 250000.


Sorry to appear ignorant but does this mean the reset button on the actual Arduino hardware?

Terry]]> terryd RAMPS Electronics Thu, 26 Jan 2017 12:00:59 -0500 https://reprap.org/forum/read.php?219,465662,706652#msg-706652 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706652#msg-706652
Quote
LioLine
I don't understand what I should do after I opened the serial monitor ?
Press and release the Reset button. This should send the word "start" over the serial line. If there's just some garbage or simply nothing, try other baud rates. One can simply try all of them: 19200, 38400, 57600, 115200, 250000.]]> Traumflug RAMPS Electronics Sun, 11 Sep 2016 07:17:52 -0400 https://reprap.org/forum/read.php?219,465662,706638#msg-706638 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706638#msg-706638
ok so when I open the serial monitor, nothing happen. I tried this tutorial : [www.instructables.com]
- I loaded the sketch, set the right baudrate, and was able to send and receive data.
So I guess there is a problem in the baudrate set in my firmware right ? But I checked that and it seems alright to me. I didn't go through all that trouble with my previous computer (the only difference was that it was running on windows 7).

Lionel]]> LioLine RAMPS Electronics Sun, 11 Sep 2016 05:44:02 -0400 https://reprap.org/forum/read.php?219,465662,706570#msg-706570 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706570#msg-706570
With wrong baudrate you'll see some cryptic chars when starting the board ...]]> VDX RAMPS Electronics Sat, 10 Sep 2016 18:36:45 -0400 https://reprap.org/forum/read.php?219,465662,706543#msg-706543 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706543#msg-706543 Thank you for the help.]]> LioLine RAMPS Electronics Sat, 10 Sep 2016 15:27:25 -0400 https://reprap.org/forum/read.php?219,465662,706534#msg-706534 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706534#msg-706534 Wurstnase RAMPS Electronics Sat, 10 Sep 2016 14:45:02 -0400 https://reprap.org/forum/read.php?219,465662,706524#msg-706524 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706524#msg-706524 I wonder if I'm not missing something very obvious here. But I went through the installation of the different software several time, and still have no clue of what's going wrong.

Thank for the answer anyway.]]> LioLine RAMPS Electronics Sat, 10 Sep 2016 14:04:16 -0400 https://reprap.org/forum/read.php?219,465662,706521#msg-706521 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706521#msg-706521 LioLine RAMPS Electronics Sat, 10 Sep 2016 13:59:57 -0400 https://reprap.org/forum/read.php?219,465662,706520#msg-706520 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706520#msg-706520 LioLine RAMPS Electronics Sat, 10 Sep 2016 13:58:11 -0400 https://reprap.org/forum/read.php?219,465662,706309#msg-706309 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706309#msg-706309 VDX RAMPS Electronics Fri, 09 Sep 2016 11:54:49 -0400 https://reprap.org/forum/read.php?219,465662,706307#msg-706307 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706307#msg-706307 Wurstnase RAMPS Electronics Fri, 09 Sep 2016 11:47:28 -0400 https://reprap.org/forum/read.php?219,465662,706302#msg-706302 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,706302#msg-706302
I'm having the same problem here. I used to run my printer on another computer. I'm using teacup and pronterface, with an Uno. I have no trouble uploading the firmware, but I'm not able to connect the printer to pronterface. The usb port is ok, the baudrate is ok... Anybody have an idea ?
Cheers

LioLine]]> LioLine RAMPS Electronics Fri, 09 Sep 2016 11:27:13 -0400 https://reprap.org/forum/read.php?219,465662,467496#msg-467496 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,467496#msg-467496
Thanks for your replies. I checked the ports like 5 times so it should be good by now...

I decided to buy a new Arduino mega, all these hours spend trying to fix it are just nog worth it.

cheers]]> Imhotep RAMPS Electronics Sat, 07 Feb 2015 15:19:06 -0500 https://reprap.org/forum/read.php?219,465662,466690#msg-466690 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,466690#msg-466690 jbernardis RAMPS Electronics Thu, 05 Feb 2015 23:56:20 -0500 https://reprap.org/forum/read.php?219,465662,466674#msg-466674 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,466674#msg-466674 MindRealm RAMPS Electronics Thu, 05 Feb 2015 22:02:33 -0500 https://reprap.org/forum/read.php?219,465662,466501#msg-466501 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,466501#msg-466501
Thanks for your reply.

My arduino is connecting with my mac. When I try to upload a new program it says: ''timeout communicating with programmer''

The on led lights up and there is a yellow light burning at ''Aref'']]> Imhotep RAMPS Electronics Thu, 05 Feb 2015 13:48:19 -0500 https://reprap.org/forum/read.php?219,465662,466264#msg-466264 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,466264#msg-466264 not recognized, then I suspect the port on the computer may be damaged.

If the Arduino is recognized by the computer when plugging it in, check to be sure the computer didn't bump it to a different COM port address. You can test this by connecting to the Arduino with the Arduino IDE.]]> MindRealm RAMPS Electronics Thu, 05 Feb 2015 08:48:34 -0500 https://reprap.org/forum/read.php?219,465662,466137#msg-466137 Re: Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,466137#msg-466137 Imhotep RAMPS Electronics Thu, 05 Feb 2015 05:23:13 -0500 https://reprap.org/forum/read.php?219,465662,465662#msg-465662 Pronterface won't connect anymore https://reprap.org/forum/read.php?219,465662,465662#msg-465662
I'm having trouble connecting my Prusa i3 to Pronterface.

I have been printing for 6-7months succesfully. Last week I wanted to replace a fan and I got some sparks and ashort circuit I believe.

Now when I try to connect to Pronterface it only says: ''connecting...''


I have attached a photo of my Arduino.

Hopefully someone has some tips, any help would be greatly appreciated.

Cheers,

Imhotep]]> Imhotep RAMPS Electronics Wed, 04 Feb 2015 10:06:51 -0500