Please, explain me such a thing.. When I upload Developer Build Fw, buzzer on startup begins to sound short.. only two first beeps from usual melody and thats all. Nothing else unusual, only sound. When I upload Fw 1.8.2 back, it sounds as usual again.
I have one Pixhack V3 board from another batch, it sounds normal on each Fw. But 4 other boards make me nervous.
Also this first board works much better with its sensors. After I solved the problem with calibration params erasing - it works perfect with Developer Build Fw ( warm or cold - doesn't metter). But other 4 boards always make warnings about inconsistensy of Gyros.. One of them began to make warnings "No valid data from Gyro1".. I decided not to use it at all.