0 APM2 Hardware Fail-safe? Posted by Andrew Beckett on July 12, 2012 at 11:35am I realize this is a little late, but why was the hardware MUX fail-safe removed going from APM1 to APM2? You need to be a member of diydrones to add comments! Join diydrones Email me when people reply – Follow
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It didn't do anything we couldn't do in software on the new 32U2 chips in APM2, and we wanted to lower chip count, cost and complexity. The software MUX has been working great.