I note that the BrickPi3 firmware (i.e., the software that runs in the two Arduino/AVR processors on the BrickPi3 card), currently at version 1.4.6, is only available in binary in the BrickPi3 repository on GitHub. This appears to be consistent with a statement by “John C” in this forum earlier this year:
Hey @graykevinb thanks for all you said about the BrickPi3! Indeed, @Matt did a fantastic job with the redesign and we’re really happy it seems to have knocked out a lot of the things we wanted to improve on the BrickPi+.
Unfortunately at this time we’re not releasing the firmware to be open. However, we promise to be in the future (and hope we have been in the past) super responsive to feature improvement requests and bug issues. Thanks!
Has there been any change in this policy. I would sincerely hope so. If there has been, where can the Arduino source be obtained?