Mathieu MoranandCopilot
975526667e
The upload loop previously always slept the full 30s UPLOAD_INTERVAL between batches, even when a full batch was just sent (meaning more rows were likely still queued). With GPS/OBD rows logged every 5s locally, an offline/stale device could build up a large backlog that took a very long time to drain at 100 rows/30s. - Bump TRACKING_BATCH_SIZE 100 -> 500 (cuts round-trips per backlog). - Only sleep the full UPLOAD_INTERVAL once actually caught up (a short batch came back); while a full batch keeps coming back, drain back-to-back with a short CATCHUP_INTERVAL (1s) instead. - server/app.py: add a sane MAX_TRACKING_BATCH_POINTS (5000) cap on the tracking/batch endpoint as a defensive guard against a runaway client, independent of the Pi's own batch size. Verified against the real deployed server: a simulated 1250-row backlog now drains in 3 batches (~0.35s server round-trip time) instead of 13 batches spread across ~6.5 minutes of idle sleeping. 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.
|
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.