I am working with some high school students that got a Sanguino kit that did not have the boot loader burned/flashed into the AVR chip. After a lot of research I have blogged on how to use the USB serial cable to program the chip with Audino IDE boot loader code. So no need to buy or hunt down a programmer! Here's the steps that I have blogged: [exmrclean.blogspot.com] It should be useful with other AVR chip types via the AVRDUDE program. https://reprap.org/forum/read.php?13,23497,23497#msg-23497 Wed, 22 Jul 2026 01:14:10 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?13,23497,27411#msg-27411 https://reprap.org/forum/read.php?13,23497,27411#msg-27411
I keep on planning to get around to building a dedicated board but never quite get there (I want the Arduino back for other projects).

For anyone planning to go this route you have to disable the programmer Arduino auto reset. Otherwise attempting to use the Arduino Burn Bootloader option fails. It inadvertantly resets the programmer which seeing activity within it's bootloader timeout then fails to load up the programmer sketch in it's own flash.

Using avrdude though form the command line works a treat.

Great work on the bit banging route though, it has got to be a cheaper route from A to B for those emergency moments.

Cheers

aka47]]> aka47 Controllers Fri, 11 Sep 2009 07:03:37 -0400 https://reprap.org/forum/read.php?13,23497,27390#msg-27390 https://reprap.org/forum/read.php?13,23497,27390#msg-27390 The programmer requires a printer port and doesn't protect the port against misuse. but I have been using this design for about 8 years with hundreds if not thousands of processors.

The parts are 1 db25 plug, 4 resistors and a capacitor.

[www.opend.co.za]]]> Murray Controllers Thu, 10 Sep 2009 11:54:44 -0400 https://reprap.org/forum/read.php?13,23497,26966#msg-26966 https://reprap.org/forum/read.php?13,23497,26966#msg-26966
Thats great to hear that you were able to use the same cable and software to program the extruder controller also.]]> freds Controllers Sun, 30 Aug 2009 13:06:53 -0400 https://reprap.org/forum/read.php?13,23497,26949#msg-26949 https://reprap.org/forum/read.php?13,23497,26949#msg-26949
Javier]]> javirosa Controllers Sat, 29 Aug 2009 22:12:43 -0400 https://reprap.org/forum/read.php?13,23497,26430#msg-26430 https://reprap.org/forum/read.php?13,23497,26430#msg-26430
I see that you posted on the orginal blog that it worked for you with the cupcake.

Did you use it for both the Sanguino motherboard and the extruder controller?

If the extuder controller what was the difference in the commands and or fuses?]]> freds Controllers Mon, 17 Aug 2009 19:54:37 -0400 https://reprap.org/forum/read.php?13,23497,26385#msg-26385 https://reprap.org/forum/read.php?13,23497,26385#msg-26385 javirosa Controllers Sun, 16 Aug 2009 19:32:47 -0400 https://reprap.org/forum/read.php?13,23497,23497#msg-23497 https://reprap.org/forum/read.php?13,23497,23497#msg-23497
After a lot of research I have blogged on how to use the USB serial cable to program the chip with Audino IDE boot loader code. So no need to buy or hunt down a programmer!

Here's the steps that I have blogged:

[exmrclean.blogspot.com]

It should be useful with other AVR chip types via the AVRDUDE program.]]> freds Controllers Tue, 12 May 2009 21:18:41 -0400