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mathiasvr / bluejay

:bird: Digital ESC firmware for controlling brushless motors in multirotors
GNU General Public License v3.0
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Add the option to disable the low voltage protection, use case with liion batteries #47

Open JaKoB-FR opened 2 years ago

mathiasvr commented 2 years ago

The efm8 should be able to run significantly below 3V. What voltage do you want to run? Could this be a problem with voltage dropping because of on inadequate capacitor when powering the ESC?

JaKoB-FR commented 2 years ago

The efm8 should be able to run significantly below 3V. What voltage do you want to run? Could this be a problem with voltage dropping because of on inadequate capacitor when powering the ESC?

the esc stop starting at 5.9/5.8 V (on 2s liion which could run down to 2.5V per cells). I don't have extra capacitor on this build. This feature was common on fixed wing applications and lipo batteries when you want to have the rx and servos still running (5v) to control the glide for landing when battery is sagging. This low voltage protection can be disable on blheli32 configurator, I am wondering if it could be implemented in blue jay

mathiasvr commented 2 years ago

There is no low voltage protection in bluejay. What ESC are you sing? I think maybe it is cutting voltage due to a regulator or similar?

damosvil commented 2 years ago

I think that VDD supply monitor and reset source is enabled in the code below. The problem is that in order to be able to write in flash, supply monitor needs to be enabled. Maybe reset source can be disabled, but I don't know whether it could be advisable.

pgm_start: .... orl VDM0CN, #080h ; Enable the VDD monitor mov RSTSRC, #06h ; Set missing clock and VDD monitor as a reset source if not 1S capable ....