Hi Guy's I am wondering if anyone can give me some advise on a problem i am having with one of the boards.. I've got myself a set of Reprap's MIDI Electronics from IPRINT3D , and after having a few problems , I desided i would re-program the motherboard and extruder controller with the latest firmware. Ive successfully reprogrammed the motherboard , but the only problem i am having is with the extruder controller... After loading the arduino software and selecting Tools->Board->Arduino Diecimila or Duemilanove w/ ATmega 168 then selecting Sketch->Verify/Compile. The program compile's without errors. I then connect the usb to the extruder controller and Select Upload to I/O Board, but i get the following error : avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51 Ive also tryed holding the reset button and releasing it as soon the Upload to I/O Board button is pressed.. but same error . Anyone have any ideas how to over come this problem ? Gary https://reprap.org/forum/read.php?13,51371,51371#msg-51371 Sun, 06 Sep 2026 08:30:52 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?13,51371,51589#msg-51589 https://reprap.org/forum/read.php?13,51371,51589#msg-51589 VDX Controllers Wed, 14 Jul 2010 04:02:29 -0400 https://reprap.org/forum/read.php?13,51371,51588#msg-51588 https://reprap.org/forum/read.php?13,51371,51588#msg-51588
Have you connected the USB-TTL cable to the extruder board?]]> Matthew Controllers Wed, 14 Jul 2010 03:52:41 -0400 https://reprap.org/forum/read.php?13,51371,51392#msg-51392 https://reprap.org/forum/read.php?13,51371,51392#msg-51392
So your potential problems are:

1. Wrong serial port in use for USB connection.
2. Not resetting board from USB cable (lots of people have this, they learn when to manually push the reset button).
3. IDE enviorment not setup for USB serial connection (sounds wierd if you used standard downloads)
4. Target board doesn't have the boot strap loader loaded into it. (After pressing reset it should blink a number of times, pause and then blink once more).]]> freds Controllers Sun, 11 Jul 2010 23:19:32 -0400 https://reprap.org/forum/read.php?13,51371,51373#msg-51373 https://reprap.org/forum/read.php?13,51371,51373#msg-51373
You need the arduino protocol, not the stk500 protocol, which from the function names I am guessing it is trying to use.

So find the version that comes with the arduino package, and it should work.

David]]> davidgoodenough Controllers Sun, 11 Jul 2010 14:53:14 -0400 https://reprap.org/forum/read.php?13,51371,51371#msg-51371 https://reprap.org/forum/read.php?13,51371,51371#msg-51371
I am wondering if anyone can give me some advise on a problem i am having with one of the boards.. I've got myself a set of Reprap's MIDI Electronics from IPRINT3D , and after having a few problems , I desided i would re-program the motherboard and extruder controller with the latest firmware.

Ive successfully reprogrammed the motherboard , but the only problem i am having is with the extruder controller...

After loading the arduino software and selecting Tools->Board->Arduino Diecimila or Duemilanove w/ ATmega 168 then selecting Sketch->Verify/Compile.

The program compile's without errors.

I then connect the usb to the extruder controller and Select Upload to I/O Board, but i get the following error :

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

Ive also tryed holding the reset button and releasing it as soon the Upload to I/O Board button is pressed.. but same error .

Anyone have any ideas how to over come this problem ?

Gary]]> Gary Riding Controllers Sun, 11 Jul 2010 14:26:36 -0400