Hi reprap community! i am new and have just built my first reprap. I am using Sanguinololu Electronics and after a long day of headaches i managed to compile both Marlin and Sprinter. But i am not able to connect to the printer with either of the firmwares on it - they uploaded just fine with Arduino 1.0.1. I use the baud rates 250000 for Marlin and 115200 for Sprinter and pronterface just says "connecting..." if i select the wrong baud rates it says "attempted to write invalid text to console" and if i detach the cable it says "Can't write to printer (disconnected?). Can't read from printer (disconnected?).". So the connection seems to be ok. I am on gentoo and pronterface starts without other errors, furthermore starting it as root does not make a difference because my user is in the tty and uucp groups. (i've tried it) Any suggestions? And is there any feedback if the connect was succesful? (also tried pronsole.py) Thank you very much kugel https://reprap.org/forum/read.php?146,170560,170560#msg-170560 Sun, 15 Mar 2026 22:14:24 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?146,170560,276114#msg-276114 https://reprap.org/forum/read.php?146,170560,276114#msg-276114 Solved in Configuration.h:
//#define BAUDRATE 250000
#define BAUDRATE 115200]]> jalmasi Firmware - mainstream and related support Thu, 05 Dec 2013 07:02:42 -0500 https://reprap.org/forum/read.php?146,170560,171282#msg-171282 https://reprap.org/forum/read.php?146,170560,171282#msg-171282
now i tried the Repetier-Firmware and the Repetier-Host and i was able to move all axes :)
Problem is I get errors and then disconnects often. Don't know why but at least i can connect!

That's a reasonable improvement to the previous state.

Now i just have to figure out where the errors come from and fix that...]]> kugel Firmware - mainstream and related support Thu, 13 Dec 2012 15:15:28 -0500 https://reprap.org/forum/read.php?146,170560,171123#msg-171123 https://reprap.org/forum/read.php?146,170560,171123#msg-171123
Finally, you should be able to just plug the board into the USB and communicate. You don't need to have anything attached. Wish I could be more help, but I figured something was better than nothing.]]> TopherMan Firmware - mainstream and related support Wed, 12 Dec 2012 18:47:47 -0500 https://reprap.org/forum/read.php?146,170560,171103#msg-171103 https://reprap.org/forum/read.php?146,170560,171103#msg-171103
still not working...
Do i have to power the board except with the usb to be able to connect to it? I tried it but i want to know if i have to switch on my psu everytime i try to connect. And does anything else like the stepper motors have to be connected?]]> kugel Firmware - mainstream and related support Wed, 12 Dec 2012 17:07:12 -0500 https://reprap.org/forum/read.php?146,170560,171075#msg-171075 https://reprap.org/forum/read.php?146,170560,171075#msg-171075 " when trying to upload a firmware.

Does anybody know what could be wrong ? :(]]> kugel Firmware - mainstream and related support Wed, 12 Dec 2012 14:33:21 -0500 https://reprap.org/forum/read.php?146,170560,170754#msg-170754 https://reprap.org/forum/read.php?146,170560,170754#msg-170754
If just nothing happens, check your firmware configuration. If firmware uploading works, the serial connection hardware works. Can't help much with Marlin & Sprinter, I'm a Teacup guy.]]> Traumflug Firmware - mainstream and related support Tue, 11 Dec 2012 05:23:31 -0500 https://reprap.org/forum/read.php?146,170560,170662#msg-170662 https://reprap.org/forum/read.php?146,170560,170662#msg-170662
if i try to connect with gtkterm i don't get any okay and i can't type anything in the console... what could i do?]]> kugel Firmware - mainstream and related support Mon, 10 Dec 2012 17:04:09 -0500 https://reprap.org/forum/read.php?146,170560,170622#msg-170622 https://reprap.org/forum/read.php?146,170560,170622#msg-170622
You can connect using a serial terminal like GtkTerm. It's a plain serial connection. Hitting Enter should be answered by an "ok", sending M105 should give a temperature report.]]> Traumflug Firmware - mainstream and related support Mon, 10 Dec 2012 13:11:15 -0500 https://reprap.org/forum/read.php?146,170560,170560#msg-170560 https://reprap.org/forum/read.php?146,170560,170560#msg-170560
i am new and have just built my first reprap.

I am using Sanguinololu Electronics and after a long day of headaches i managed to compile both Marlin and Sprinter.

But i am not able to connect to the printer with either of the firmwares on it - they uploaded just fine with Arduino 1.0.1. I use the baud rates 250000 for Marlin and 115200 for Sprinter and pronterface just says "connecting..." if i select the wrong baud rates it says "attempted to write invalid text to console" and if i detach the cable it says "Can't write to printer (disconnected?). Can't read from printer (disconnected?).". So the connection seems to be ok.

I am on gentoo and pronterface starts without other errors, furthermore starting it as root does not make a difference because my user is in the tty and uucp groups. (i've tried it)

Any suggestions? And is there any feedback if the connect was succesful? (also tried pronsole.py)

Thank you very much
kugel]]> kugel Firmware - mainstream and related support Mon, 10 Dec 2012 08:55:28 -0500