Mathieu MoranandCopilot 7d7be79377 Add chunked, resumable dashcam upload to work around Cloudflare's 100MB body limit
Confirmed against the real deployed server: Cloudflare Tunnel's free
tier caps request bodies at ~100MB and returns a plain 413 - a direct
LAN upload of the same 250MB test file succeeds, the identical request
through yaris.ceaf.dev does not. Real dashcam clips average ~320MB, so
no dashcam video could ever complete an upload through the tunnel as
it stood, regardless of the earlier memory-streaming fix.

Server: new /api/v1/dashcam/upload/chunk (accepts one chunk at a time,
keyed by relative_path+sha256+chunk_index/total_chunks, reassembles and
verifies the sha256 once every chunk has arrived) and
/api/v1/dashcam/upload/status (reports which chunk indices a given
upload already has, or "already_uploaded" if it's done) endpoints.
Chunks are staged under STORAGE_DIR/.upload_tmp/<device>/<sha256>/ and
cleaned up after reassembly; a stale partial set left by a differently
-chunked earlier attempt is detected via a small marker file and wiped
before restarting. The original single-shot /upload endpoint is left
in place unchanged.

Client (modules/app_upload.py): _upload_dashcam_files() now calls
_upload_video_chunked(), which checks /status first (so a prior
partial upload resumes instead of restarting from byte 0) and then
POSTs any missing 40MB chunks (DASHCAM_CHUNK_SIZE, comfortably under
Cloudflare's cap) via the same streaming MultipartEncoder approach as
before.

Co-authored-by: Copilot <[email protected]>
2026-08-08 22:17:20 -04:00

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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Screenshot

UI

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 systemd service, 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.

S
Description
rpi obd app with way less features... yet
Readme MIT
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