Lowest setup cost
ESP32 CAN Sniffer works with low-cost ESP32 + MCP2518FD hardware (~€5-10).
ESP32 CAN Sniffer for Windows
See exactly what your car is saying.
Real-time decoded diagnostic messages. Windows desktop suite for ESP32 and MCP2518FD with DBC import/export, save/replay, a Compare tab for freeze-and-diff reverse engineering, and optional FIAT Stilo add-on (Stilo-tested dictionary data)—built for workshop technicians and developers worldwide.
Buy a ~€5 ESP32 + MCP2518FD module on AliExpress, set it up and start sniffing live CAN data.
SHA256: A2B33926D46DC23C18CE2FEB0027B7BBB04A709B19B65F52E046432FA9449AE1
✔ Real-time CAN decoding
✔ Signal-level analysis (not just raw data)
✔ Compare tab: freeze baseline → see which ID & byte changed
✔ Works with ESP32 + MCP2518FD (no custom hardware)
🔧 FIAT Stilo add-on (tested) – €30 one-time
Current Release
v1.0.5
Hardware update: we switched from MCP2515 to MCP2518FD CAN controllers. Flash the new firmware zip (v1.1) and connect USB at 921600 baud.
- MCP2518FD firmware + USB 921600 default
- Detect CAN speed from live bus traffic
- Compare tab — freeze & byte diff (RE)
- DBC import/export · automation rules
PRO package unlocks Wi-Fi, advanced databases, and automation tools. Free demo installer: use Download Demo Installer on the left.
Value
Compare with professional CAN tools
Professional CAN tools cost thousands. We built the same core workflow for about €140/year — tested on a real Fiat Stilo, not just a spec sheet.
Software
Best for Fiat workflows
Built-in FIAT-focused decoding workflow and add-on support in one Windows UI.
Reverse-engineer faster
Compare tab: capture a baseline, trigger a control, see exactly which CAN ID and byte changed — live or during replay.
Who should pick this
Technicians and DIY users who need practical CAN diagnostics without enterprise tool pricing.
| Feature | ESP32 CAN Sniffer | SavvyCAN | Vector CANalyzer | PCAN-View |
|---|---|---|---|---|
| Price | €140/year (annual PRO) | Free | €2,000–5,000+ | Free* |
| Hardware cost | ~€5 ESP32 + MCP2518FD | Any interface | €500–2,000+ proprietary | €100+ PEAK only |
| Windows GUI | Yes | Yes | Yes | Yes |
| Vehicle dictionaries | Yes (Fiat tested) | No | Extra cost | No |
| DBC support | Yes | Yes | Yes | Yes |
| Session replay | Yes | Yes | Yes | No |
| Freeze / byte diff (RE) | Yes (Compare tab) | Manual | Yes | No |
| Wi‑Fi capture | Yes | No | No | No |
| Signal watch | Yes | Yes | Yes | No |
| Ready out of the box | Yes | DIY setup | Yes | Yes |
| Support | Direct | Community | Corporate | Community |
| Works on cheap hardware | Yes | Yes | No | No |
On mobile: swipe the table sideways to compare all tools.
* PCAN-View is free for basic viewing; full professional workflows often need paid PEAK hardware and tools.
Hardware
| Hardware | Typical cost | Works with ESP32 CAN Sniffer |
|---|---|---|
| ESP32 + MCP2518FD | ~€5–10 | Designed for this |
| Vector VN1610 | €800+ | No |
| PEAK PCAN-USB | €100+ | No |
| Kvaser Leaf | €200+ | No |
| ELM327 | ~€10 | Different protocol |
Product Tour
See the desktop suite in action
Watch a quick demo of the GUI in action, then explore the screenshots below.
Built for automotive diagnostics & reverse engineering
Live Monitoring
High-performance capture with real-time filtering and stream stats.
Budget Hardware
Works with ESP32 + MCP2518FD. No custom PCB required.
Decoder Ecosystem
DBC support, custom decoding and structured CAN analysis workflows.
Professional Automation Suite
Batch session save/load, automated health reports, and CAN activity analytics to accelerate diagnostics.
Signal-Level Analysis
Track and monitor individual decoded signals inside CAN messages. Focus on meaningful states and values (enums, units, scaling) instead of raw hex bytes.
Package Options
DEMO
€0
- USB/Serial capture
- Core decoding + CSV tools
- 30-day evaluation access
Use Download Demo at the top of the page.
PRO
Monthly Support Package
Annual Pro Package Save 20%
€15 / month
- Unlocks all features
- Wi-Fi, DB import/export
- Automation suite & health reports
- License key by email + ESP32 firmware flash package (follow-up email)
Deployment & Hardware Setup
ESP32 CAN Sniffer is a proprietary automotive diagnostic software platform developed by IFIX ELEKTRONIKA for professional CAN analysis, reverse engineering, and workshop deployment.
The software works with ESP32-based CAN sniffers using the MCP2518FD controller. This widely available and affordable hardware setup delivers reliable, real-time CAN monitoring without the need for custom PCB design.
What you receive (PRO purchase)
- Windows Pro license — activation key by email after payment
- ESP32 MCP2518FD firmware — pre-compiled zip in a follow-up email (
flash.bat+ 20 MHz / 40 MHz builds; no Arduino IDE) - Your hardware — ESP32 + MCP2518FD module (not shipped by us)
- FIAT Stilo add-on — dictionary zip by email; included with annual plan, optional +€30 on monthly
Optional Add-Ons
-
FIAT Stilo add-on
Advanced decoding with signal extraction, byte addressing and real-world tested data. - Additional CAN databases will be available for other vehicles and use cases.
Why upgrade?
- Wi-Fi connectivity for remote diagnostics and setups
- Advanced database tools for structured CAN analysis
- Automation tools for faster diagnostics and workflow optimization
Business & Technical Support
Email esp32contact@gmail.com for licensing, software support, or deployment inquiries.