If it was some how wired in to be powered from the phantoms battery it would seem it would have to get pretty run down to go below the low voltage cut off voltage of 3 point some thing volts.
and from the video it looks as if they phantom was still powered on the whole time even after the chute deployed. So it would seem that it should of not been from the voltage being below the cut out voltage.
I have a separate 200ma single cell battery that is used to power the mayday completely independent from the flight battery in the phantom. If I just arm the mayday and let it sit it goes for a bit over 4 hours before the tiny battery gets so low that it starts shutting off the mayday then after it shuts off and the voltage rises back up over the low voltage cut off point it will try to power back on and each time it does that the relay will chatter or move some and it will deploy.
Dear all, The mayday board maker was fast to act and has contacted me after watching the footage i uploaded in mars parachute forum and told me that they will cover the cost of the repair. This is great news and they also told me the reason was not that the device failed but they found out from the device data that it was not properly calibrated.so, the issue is solve that the improper setup was to be blame not the device.
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