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Powered by a 3S (12V) battery input.
In the context of integrating with the ELRS board, an XT60 connector should be provided, and additional PWM input from a header pin should be placed (unsure of this requirement given we want to use DSHOT)for speed control.
3x solder pads for BLDC connection.
Supports DSHOT input.
More resistant to noise in transmission versus PWM, as DSHOT is a digital protocol.
12-5V Buck + ELRS was designed with PWM in mind but this can be altered.
An “OPTO” ESC, meaning no BEC is included.
Must use the AM32 open-source firmware for motor control. (https://am32.ca)
This uses a sinusoidal algorithm to control the BLDC. (no FOC)
Has a strict MCU compatibility list (we would preferably use a smaller ST chip)
Sensorless operation using current sense & back EMF. No Hall sensing or current sense.
Designed around an target motor (in Houston): https://innov8tivedesigns.com/cobra-cm-2217-20-brushless-motor-kv-950.html
Standard 3-phase brushless DC motor with 12 stator windings and 14 exterior magnet poles, meaning 4 coil windings per phase. Designed for 3S/4S power source.
With a higher density of magnet poles in the rotor, smoother torque is able to be produced by the motor. The rotor being on the outside gives more torque as well.
Maximum continuous current of 20 Amps.
Maybe 25A or 30A maximum burst current.
Should be accounted for during FET selection.
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