Project Hub /Automotive EV & Transportation/Telematics & OBD-II/CAN-Bus-Based Doppler Radar and IMU Sensor System

Intermediate

INDUSBOARD

Project Specific

3 – 6 Hours

Partial Kit

CAN-Bus-Based Doppler Radar and IMU Sensor System

A CAN-bus-based Doppler radar and IMU sensor system that integrates seamlessly into existing vehicle architectures for real-time speed, acceleration, and orientation monitoring.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

RCWL-0516 Microwave Radar Sensor Rs. 59.00
USB to UART/ESP8266 Adapter Programmer for ESP-01 WiFi Modules with CH340G Chip Rs. 99.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Cable for Arduino Nano (USB 2.0 A to USB 2.0 Mini B) 30cm Rs. 69.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Other Dev Board (Indusboard / Maixduino / misc)
LM35 / Analog Temp Sensor
Header Pins / Terminals / Connectors
Enclosure / Box / Case

Browse all components

How It Works

The CAN-Bus-Based Doppler Radar and IMU Sensor System integrates motion tracking and vehicle communication by combining an HB100 microwave Doppler radar with dual IndusBoard Coin microcontrollers. The HB100 radar emits high-frequency radio waves and detects the frequency shift of reflections from moving objects or the ground, outputting low-level analog signals proportional to velocity. Because these raw radar signals are very weak, an LM358 operational amplifier conditions and boosts the analog waveforms so the IndusBoard Coin can accurately sample and process them. To share this telemetry data across the vehicle, the system uses two TJA1050 CAN bus transceiver modules wired via twisted pair cables. One IndusBoard Coin collects the processed speed data from the radar and accelerometer/gyroscope motion data, packaging the telemetry frames onto the internal CAN network. The second IndusBoard Coin connects directly to the vehicle's OBD port connector to interface with the factory data bus, allowing the custom sensor array to communicate alongside existing automotive control units. Everything is securely housed in a custom 3D-printed enclosure and powered via USB-C cables during bench testing or auxiliary deployment.

Why Build This

Gain practical experience prototyping advanced driver-assistance systems (ADAS) and collision avoidance technologies used in modern automotive engineering.

Learn how to interface custom sensor hardware with standard vehicle protocols using microcontrollers and CAN bus transceivers.

Develop hands-on competence in signal conditioning, analog amplification with operational amplifiers, and embedded system packaging.

Real-World Application

Advanced driver-assistance systems (ADAS), collision avoidance, adaptive cruise control, autonomous braking, and vehicle monitoring.

Skills You'll Learn

CAN bus communication

operational amplifier signal conditioning

Doppler radar data processing

IMU integration

OBD port interfacing

3D printed enclosure design

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

CAN BUS

DOPPLER RADAR

IMU

IOT

WI-FI

ADAS

SENSOR INTEGRATION

Frequently Asked Questions

Can I connect this directly to my car's OBD-II port without modifying the vehicle's wiring?

Yes, the OBD port connector allows you to plug into the standard diagnostic interface, but you must ensure your CAN-bus transceiver is properly wired to the correct pins (typically High and Low) to avoid interfering with factory communications.

Why is an LM358 operational amplifier necessary for the HB100 radar?

The raw signals generated by the HB100 Doppler radar are extremely weak analog voltages. The LM358 amplifier boosts and filters these signals so the IndusBoard Coin microcontroller can reliably read the velocity data.

Do I need any specialized software libraries to run the CAN bus communication?

While no specific software is listed in the project data, implementing CAN bus communication on the IndusBoard Coin generally requires standard serial communication libraries compatible with your development environment and the TJA1050 module.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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