First real-hardware test revealed the connected dashcam's SD card ships factory-formatted with no partition table - lsblk reports it as a bare "disk" with an fstype set directly, never as a child "part". The previous detection logic only matched type=="part", so it silently missed this real device entirely. list_usb_storage_partitions() now also matches whole-disk USB devices that have no children and an fstype set directly on them, in addition to the existing partition-table case. Verified against a fixture built from this dashcam's actual `lsblk -J` output. Co-authored-by: Copilot <[email protected]>
yaris-obd 🚗📡
A Raspberry Pi 3-based OBD-II + GPS tracker for my 2013 Toyota Yaris — reads live vehicle data over USB, tracks position with a SIM868 GNSS/GSM HAT, and serves it all from a local web UI you can pull up on your phone by connecting to the car's own WiFi hotspot. Fully usable offline: no internet needed in the car, offline map tiles included. Also handles pulling dashcam footage off a USB dashcam for local/remote backup.
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rené lévesque bangers i have a dream |
Screenshot
Features
- 📊 Live OBD-II data (speed, RPM, DTC codes) over a cheap USB ELM327-compatible adapter
- 🛰️ Real GPS tracking via a Waveshare SIM868 GNSS/GSM/Bluetooth HAT, plotted live on an offline Leaflet map (pre-cached map tiles — no internet needed in the car)
- 📶 Self-hosted WiFi hotspot so you can load the web UI on your phone from inside the car,
with automatic fallback to your home WiFi when in range (
http://yaris.local— no port number) - 🎥 Dashcam file retrieval — detects a USB dashcam automatically (any brand/folder layout, no hardcoded device path) and copies its footage locally
- 🗄️ Local SQLite trip logging, with an optional MongoDB remote sync path
- 🔌 Runs fully headless as a
systemdservice, autostarting on boot
Hardware
| Part | Notes |
|---|---|
| Raspberry Pi 3 Model B | Web UI host + hotspot |
| Waveshare SIM868 HAT | GNSS (GPS) + GSM/GPRS, unused Bluetooth |
| USB OBD-II adapter | PL2303-based, ELM327-compatible (originally Bluetooth, switched to USB) |
| USB dashcam | Any brand — detected as generic USB mass storage |
| 2013 Toyota Yaris | The patient |
See PLAN.md for full hardware bring-up notes (SIM868 jumper/UART setup, antenna gotchas, etc.) and the detailed project history.
Getting started
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
python3 app.py
The app serves on http://<host>:5000. On the Pi it also runs as a systemd service
(see deploy/) and is reachable with no port number at http://yaris.local once the
mDNS + port-redirect setup described in PLAN.md is installed.
Project status
This project was revived after a couple of years on the shelf. Progress is tracked phase-by-phase in PLAN.md — currently through Phase 8 (dashcam retrieval), with the remote server/upload phase still to come.
