User Manual

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To aid with troubleshooting, the AfroESC sports “ready” (green) and “error”
(red) LEDs. During power-up, the MOSFETs and drive circuitry are
checked to ensure correct operation. During this test, it may be unsafe to
beep an error. If no beeps are heard from the motor, check to see if the
error LED is flashing, which should be visible through the heat-shrink. If so,
count the number of blinks between pauses and refer to the following list:
• 1 flash: Phase A stuck high"
• 2 flashes: Phase B stuck high"
• 4 flashes: Phase C stuck high"
• 5 flashes: AIN0 (center neutral) stuck high
• 6 flashes: Phase A low-side drive fault"
• 7 flashes: Phase B low-side drive fault"
• 8 flashes: Phase C low-side drive fault"9 flashes: Phase A high-side
drive fault
• "10 flashes: Phase B high-side drive fault
• 11 flashes: Phase C high-side drive fault
If no wiring fault or short is visible, one or more MOSFETs may have failed.
The ESC must be repaired or replaced. Otherwise, if the hardware check
passes, the reason for reset is checked and indicated by beeping through
the motor and LED flashing. There are four main beep pitches:
Beep 1: Lowest pitch (also red LED)."
Beep 2: Medium-low pitch (also green LED).
"Beep 3: Medium-high pitch (no LEDs)
"Beep 4: Highest pitch (also red and green LEDs together).
Beeps 1, 2, and 3: Normal power-up with no special event detected. A
longer beep 4 normally follows to indicate that an arming signal was
detected.
Beep 3, beep 1: Voltage brown-out detected (MCU voltage dropped below
4.0V). If this happens during battery connection, it can be safely ignored. If
this happens during use, the ESC may have drawn more than the power
source is able to provide, and the input voltage dropped below about 5V.
Beep 4: External reset. Should only occur after programming.
Repeating beeps 1, 1, 3, 3: Watchdog siren. Previous execution locked up