spank

Slap your MacBook, it yells back.

Uses the Apple Silicon accelerometer (Bosch BMI286 IMU via IOKit HID) to detect physical hits on your laptop and plays audio responses.

Requirements

• macOS on Apple Silicon

Install

Download both spank and sensord from the latest release.

Or build from source:

GOPRIVATE=github.com/taigrr/apple-silicon-accelerometer go install github.com/taigrr/spank@latest
GOPRIVATE=github.com/taigrr/apple-silicon-accelerometer go install github.com/taigrr/spank/cmd/sensord@latest

Usage

# Start sensor daemon first (in another terminal)
sudo sensord

# Normal mode — says "ow!" when slapped
spank

# Sexy mode — escalating responses based on slap frequency
spank --sexy

Modes

Pain mode (default): Randomly plays from 10 pain/protest audio clips when a slap is detected.

Sexy mode (--sexy): Tracks slaps within a rolling 1-minute window. The more you slap, the more intense the audio response. 60 levels of escalation.

How it works

1. sensord reads raw accelerometer data via IOKit HID and writes to POSIX shared memory
2. spank reads from shared memory and runs vibration detection (STA/LTA, CUSUM, kurtosis, peak/MAD)
3. When a significant impact is detected, plays an embedded MP3 response
4. 500ms cooldown between responses to prevent rapid-fire

License

0BSD