Embraco Starter

A simple, safe PWM generator app for Flipper Zero to test Embraco inverter compressors.

Website: https://experthub.app/

Features

• Safety-first startup: the app opens on Help and keeps PA7 in Hi-Z.
• 4 menu items:
  • Power off — PWM stopped (pin driven LOW)
  • Low speed — 55 Hz (≈2000 RPM VNE / 1800 RPM VEG & FMF)
  • Mid speed — 100 Hz (≈3000 RPM VNE/VEG/FMF)
  • Max speed — 160 Hz (≈4500 RPM VNE/VEG/FMF)
• Hardware PWM on PA7 for stable frequency, 50% duty.
• On exit: PA7 returns to Hi-Z.

Wiring

• 2 (A7) → inverter + (usually RED wire)
• 8 (GND) → inverter - (usually WHITE wire)

Usage

1. Launch app → read Help (output is cut to Hi‑Z while reading).
2. Press BACK to enter the main menu; default mode is Power off.
3. Select a speed with OK (Low / Mid / Max).
4. Re-enter Help any time to cut output (Hi‑Z) while reading.

Embraco compressors can run at many speeds with fine 30‑RPM steps; this app exposes three convenient test speeds.

Build (uFBT)

python3 -m pip install --upgrade ufbt
ufbt
# resulting .fap is in ./dist