Build a Bedside Physical One-Button Voice Memo Box with Raspberry Pi, Offline Whisper & Obsidian
Unlocking a bright phone screen at 2 AM to capture a fleeting idea ruins your sleep. Build a screen-free bedside push-to-talk box on a Raspberry Pi that records while held, transcribes offline via `whisper.cpp`, and appends timestamped notes straight into your local Obsidian Daily Note.
CORE TOOLS
whisper.cpp (Open Source), Raspberry Pi / Orange Pi, Obsidian Local Vault
BEST FOR
Writers, creators, Obsidian PKM users, Raspberry Pi tinkerers
REQUIREMENTS
Raspberry Pi 4/5 (or any Linux SBC); USB microphone; tactile GPIO button
✦ WHY THIS WORKFLOW
The best ideas strike right as you fall asleep, but unlocking a smartphone blasts your eyes with blue light and notifications. A tactile bedside button captures thoughts eyes-closed.
I want to build a bedside push-to-talk voice memo box on a Raspberry Pi (button on GPIO 17, LED on GPIO 27, USB mic) that transcribes offline with `whisper.cpp` and appends to my Obsidian Daily Note (`YYYY-MM-DD.md`).
Provide:
1) Complete Python script using `gpiozero` and `subprocess` (`arecord` + `whisper-cli`), ignoring accidental presses under 1 second and pulsing the LED during transcription;
2) Markdown file handler that safely appends `- [HH:MM] text` to today’s note;
3) A `systemd` unit file so it starts automatically on boot.
Use Cases & Tags:
Zero-blue-light 2 AM bedtime idea captureMorning dream journal voice loggingDeep-work desk physical scratchpad buttonHands-free kitchen or workshop voice memos#whispercpp
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