Complete CM5 Schematic

[petej]

Hey there...

I just posted a link to the bioloid knowledgebase of a awesome complete schematic for the CM5 that I came across in my searching the other day. I was going to upload it to my file space here, but I can't seem to make that work (posted in General). Anyway, here's the link:

http://www.animalrobots.eu/wp-content/D ... rBoard.pdf

And here's the jump page (note, the links there are hard to see):

http://www.animalrobots.eu/?page_id=16

Admin: Uploaded to http://robosavvy.com/Builders/petej/
File uploading is done by following the link in the User Menu block on the left -> My Files -> Upload Files

[le fatumbi]

Than you for that.
Despite of its name 'ax12', it is realy a cm5 drawing.

MCU is an ATmega64 instead of an ATmega128, is it an error or an old version ?

[petej]

Yeah, the CM5 contains an ATmega128, but the following explains...

http://www.animalrobots.eu/index.php?page_id=18

The JTAGICE also allows ISP, however it always fails for some reason the enter programming mode. I’m not aware of any “master fuse” which also prevents a full chip erase but apparently there is. After spending some hours scanning the spec of the ATMEGA128 and running several experiments I gave up. Only option left was to remove the controller using hot air and replacing it with a pin compatible ATMEGA64 after which the JTAG perfectly worked and my development board was up and running.

[limor]

so he removed the Atmega128 and replaced it with a new Atmega64 because he couldn't get JTAG working. quite impressive although there's more than one way to skin a cat..