While this post still has relevant information, the engineers at
BeatBots have created a far more stable
firmware. I highly recommend using their MyKeepon firmware, as it fixes
a lot of the timing issues the KeepOff firmware had. The MyKeepon
firmware is available at:
Keepon hacking has made a major step! Thanks to mAngO on the comment thread for my last keepon post,
we now know that grounding out the bus during keepon's powerup allows
you to act as the master to the bus!
There's a Proof of Concept video posted on youtube now..
I'm leaving the rest of this post as it was when I first wrote it for
history sake, but the information in it plus knowing that you just
need to hold down the I2C lines for a second when the keepon powers up
are enough to actually get control going. The reverse engineering
document and code in the keepoff repository will be updated to reflect
I'm really not sure I've never spent so much time cursing at something
so adorable. The past week has been yelling, crying, and generally
losing my emotional shit toward a few servos wrapped in a weird,
sticky plasticy skin, better known as the MyKeepon Dancing Robot.
How better to atone for my sin of the vivisection of the most adorable
christmas toy this year, than writing up what I found. That way,
future generations can avoid the pain inflicted on it, and the pain it
inflicted on me.
But good lord, it's so fucking CUTE.
Usually I wouldn't write this up until after I had things completely
finished, but I gave myself a week deadline for that, and that
deadline passed 2 days ago. I'm still in the middle of a few different
ideas for reversing it, but those could take a while (stupid real life
getting in the way of toy hacking), so I figured I'd dump what
information I do have now.