ESP32 CAN Bus Logger Kit with ESP32 + LED
ESP32 CAN Bus Logger Kit – Capture Every Frame at 1Mbps, Replay Filtered Data Over WiFi
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn an ESP32 and MCP2515 into a standalone CAN bus logger that silently records every broadcast frame to an SD card, then replays selected signals in real time through a web browser. Automotive engineers, Formula Student teams, and industrial IoT developers will appreciate how this kit handles high‑speed CAN 2.0B networks at 1Mbps without dropping messages. Everything you need to start logging your vehicle’s ECU traffic arrives in one box, matched and tested.
What You'll Build
You’ll assemble a compact logger that attaches to any CAN bus (passenger car, tractor, EV prototype, or industrial controller) and begins recording frames instantly. Each entry carries a microsecond‑accurate timestamp from the DS3231 RTC, stored as a CSV on a removable MicroSD. When you’re ready to inspect the data, the ESP32 serves a live dashboard over WiFi; you can filter by CAN ID, export a time slice, or watch real‑time values of engine RPM, wheel speed, or battery state of charge exactly as they appeared on the bus.
What You'll Learn
- Decoding CAN 2.0B frames using the MCP2515 over SPI with an ESP32
- Implementing high‑speed SD card logging with cyclic buffers and file rotation
- Synchronizing recorded data with the DS3231 RTC for legal‑grade timestamping
- Creating a responsive WiFi web server that streams filtered CAN frames to any browser
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| MCP2515 CAN Module | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 12V 2A PSU | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Engineered for final‑year B.Tech ECE and automotive engineering students building CAN‑based vehicle telematics units, especially those participating in the Smart India Hackathon or capstone projects at IIT, NIT, VIT, and BITS Pilani. It’s equally valuable for Formula Student/FSAE teams needing a self‑contained data logger, and for embedded developers prototyping OBD‑II diagnostic tools that require timestamped bus traffic.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code and the AI companion will walk you through wiring, code upload, and debugging. You can also drop a WhatsApp message to our support team for a human‑guided fix.
Does this kit support CAN FD (flexible data rate) frames?
No, the MCP2515 module handles only classical CAN 2.0B at up to 1Mbps. For CAN FD you would need a different controller, but most vehicles manufactured before 2020 use CAN 2.0B.
Can I connect this directly to a car’s OBD‑II port?
Yes, using a standard OBD‑II to DB9 cable (not included) you can tap pins 6 and 14 for CAN‑H/CAN‑L. The logger draws power from the car’s 12V system via the included PSU. Always verify your vehicle’s pinout first.
How do I view the logs when I’m not near the logger?
The ESP32 runs a WiFi access point and web server. Once connected, any laptop or phone browser can open the dashboard to play back recorded CSVs. You can also remove the SD card and open the CSV in Excel or Python.
MCP2515 logs all CAN bus frames to SD card at 1Mbps. ESP32 serves filtered playback over WiFi.
What's in this kit
- ESP32 Dev Board
- MCP2515 CAN Module
- DS3231 RTC
- MicroSD Module
- 0.96in OLED
- 4.7kΩ Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- Enclosure Box
- 12V 2A PSU
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items