Hi Reprap community I lately bought the Reprap Prusa Mendel 3DP01 from Open heacent on dealextreme: [www.dx.com] I built everything together and pluged it in. The blue LED on the Melzi Ardentissimo 2.0 (mix between version 1 and 2) lights up and the fan spins. But I can not connect to the Printer over Repetierhost. Do I have to do it differently? I also wonder if I have to upload a bootloader or the sprinter firmware.How can I check if those are already installed? Thank you for your replies KatzeLeo https://reprap.org/forum/read.php?1,648659,648659#msg-648659 Wed, 15 Jul 2026 15:49:15 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,648659,650667#msg-650667 https://reprap.org/forum/read.php?1,648659,650667#msg-650667 But now the LED on the Melzi is constantly blinking. Is that normal for the Merlin firmware or what could be the problem?

Thank you for your help.]]> KatzeLeo General Sun, 10 Apr 2016 11:22:29 -0400 https://reprap.org/forum/read.php?1,648659,650608#msg-650608 https://reprap.org/forum/read.php?1,648659,650608#msg-650608 no COM Port listed from the printer. Usually, when I connect my Arduino UNO the Port /dev/tty.usbmodemfd121 and /dev/cu.usbmodemfd121 show up. Those Ports work well.
I installed the driver mentioned on the page reprappro medel commissioning. Its called FTDIUSBSerialDriver_v2_3-2 and it fits my operating system (I'm using OSX 10.10.5 on a MacBookPro Late 2011).

I could upload a Bootloader to the Melzi Board over the arduino UNO, but now the blue LED doesn't light up anymore.
I also followed all the instructions on how to upload the firmware (Marlin) with the Sanguino folder and the reset jumper.
I think my problem is that the Arduino IDE can't connect to the Melzi board. I followed all intsructions mentioned on the reprap wiki about the melzi on how to upload a firmware.

On mac the device manager is called System Information and it shows following when I plug in the 3d printer:

vendor ID: 0x0403 (Future Technology Devices International Limited)
Version: 6.00
Serial Number: A9MXHRRJ
Speed: Up to 12 Mb/sec
Location ID: 0xfa130000/7
Curretn Available: 500 mA
Current Required: 90 mA



Thank you very much for your help]]> KatzeLeo General Sun, 10 Apr 2016 09:16:04 -0400 https://reprap.org/forum/read.php?1,648659,649583#msg-649583 https://reprap.org/forum/read.php?1,648659,649583#msg-649583
Have you installed the Arduino IDE? You might be missing drivers for the board.]]> Kurzaa General Thu, 07 Apr 2016 16:19:59 -0400 https://reprap.org/forum/read.php?1,648659,649557#msg-649557 https://reprap.org/forum/read.php?1,648659,649557#msg-649557 KatzeLeo General Thu, 07 Apr 2016 15:05:22 -0400 https://reprap.org/forum/read.php?1,648659,648883#msg-648883 https://reprap.org/forum/read.php?1,648659,648883#msg-648883
[attachment 75989 DSC00749.jpg]]]> elwood127 General Wed, 06 Apr 2016 00:59:49 -0400 https://reprap.org/forum/read.php?1,648659,648659#msg-648659 https://reprap.org/forum/read.php?1,648659,648659#msg-648659
I lately bought the Reprap Prusa Mendel 3DP01 from Open heacent on dealextreme:
[www.dx.com]

I built everything together and pluged it in. The blue LED on the Melzi Ardentissimo 2.0 (mix between version 1 and 2) lights up and the fan spins.
But I can not connect to the Printer over Repetierhost. Do I have to do it differently?
I also wonder if I have to upload a bootloader or the sprinter firmware.How can I check if those are already installed?

Thank you for your replies

KatzeLeo]]> KatzeLeo General Tue, 05 Apr 2016 12:12:24 -0400