ARK32 Configuration

After flashing ARK32, you must configure each motor channel using the ARK32 Configurator. The default settings will not match your motor.

KV and Pole Count must match your motor. Incorrect values cause desync, failure to spin up, or motor stalling under load.

Set the ramp rate for your prop. Ramp rate is how fast throttle may change, in percent of full throttle per millisecond. The factory value is 2 %/ms — throttle can move 2% of full throttle every millisecond, so going from zero to full throttle takes 50 ms. That is the right starting point for 5–10" vehicles. Too fast a ramp desyncs on a heavy prop. Raise it only if you need punch on a small high-kV motor. The setting is a ceiling on all three rpm bands — the firmware's own limits are 2 %/ms at startup, 6 %/ms at low rpm and 16 %/ms once spun up, and your value lowers each of them. At the factory 2 %/ms all three are flattened to 2.

Required Settings

Setting	Value	Description
Motor KV	From the motor's datasheet	RPM per volt rating of the motor. Used by ARK32 to derive timing and protection thresholds.
Pole Count	From the motor's datasheet. 2–128.	Number of magnets on the rotor, not stator slots.
Ramp Rate	2 %/ms factory. 0.1–20 %/ms.	How fast duty may change, in percent of full throttle per millisecond. Caps all three rpm bands (firmware limits: startup 2, low rpm 6, high rpm 16 %/ms). Values under 1 %/ms use a finer 0.1 %/ms step.

Starting ramp rates by motor kV: Low KV Large Prop Systems.

Applying the Settings

1. Flash ARK32 — see Flash ARK32.

2. Open the ARK32 Configurator, connect, and click Read.

3. Set Motor KV, Motor Poles, and Ramp Rate for each of the four motor channels.

4. Click Write Settings.

Every setting is documented in the configurator Settings guide. The same text lives in ARK32 doc/eeprom-settings.md.

Edge Cases

Low-KV motors swinging large props (e.g. 6S with 10"+ props) may need a lower ramp rate to avoid desync on rapid throttle changes. If the motor stutters when you raise throttle quickly, reduce ramp until it stays locked. See Low KV Large Prop Systems.