Project Hub /IoT & Connected Devices/Asset Tracking & GPS/How to Build an UWB Indoor Positioning System using ESP32 and Qorvo DWM3000

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How to Build an UWB Indoor Positioning System using ESP32 and Qorvo DWM3000

Build a real-time UWB indoor positioning and tracking system using ESP32 development boards and Qorvo DWM3000 modules, achieving centimetre-level accuracy.

Originally published on CircuitDigest

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.

ESP32 WiFi+Bluetooth CP2102 Development Board Rs. 520.00
Cable for Arduino Nano (USB 2.0 A to USB 2.0 Mini B) 30cm Rs. 69.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Battery (generic / unspecified)
Qorvo DWM3000 UWB Module

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How It Works

This advanced IoT tracking system determines precise spatial coordinates by leveraging Ultra-Wideband (UWB) radio technology paired with ESP32 microcontrollers. The system consists of four nodes built using ESP32-WROOM development boards connected to Qorvo DWM3000 UWB modules, powered via Micro-USB cables and 5V USB power banks or breadboards. UWB operates by transmitting extremely short radio pulses across a very wide frequency spectrum, allowing the system to measure the Time of Flight (ToF) of radio signals between devices with exceptional temporal precision. By calculating the exact propagation time of these packets among multiple stationary anchor nodes and a mobile tag, the system circumvents the multipath interference and signal degradation common with traditional Wi-Fi or Bluetooth RSSI positioning. The ESP32 boards handle the local processing logic and orchestrate the wireless communication packets, while Python software running on a host computer typically aggregates this ranging data to compute and visualize real-time coordinates, ultimately achieving centimeter-level localization accuracy.

Why Build This

Design and deploy scalable indoor tracking infrastructure for automated warehouses and smart factories.

Implement high-precision localization algorithms for robotics, autonomous guided vehicles (AGVs), and augmented reality environments.

Gain hands-on engineering experience with advanced radio frequency (RF) protocols and Time-of-Flight ranging principles.

Real-World Application

Warehouse asset tracking, indoor navigation in airports, factory automation and robotics, and AR/VR location tracking.

Skills You'll Learn

Ultra-Wideband (UWB) time-of-flight ranging

SPI communication protocol

microcontroller peripheral interfacing

multi-node wireless network synchronization

Python data parsing and visualization

Safety Precautions

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

Technology Tags

UWB

ULTRA-WIDEBAND

ESP32

QORVO DWM3000

RTLS

INDOOR POSITIONING

SPI

PYTHON

TRILATERATION

Frequently Asked Questions

Why use UWB instead of Wi-Fi or Bluetooth for indoor positioning?

Traditional technologies rely on Received Signal Strength Indication (RSSI), which fluctuates heavily due to walls, obstacles, and multipath interference. UWB measures the actual Time of Flight of radio pulses, yielding centimeter-level accuracy even in cluttered indoor environments.

What is the role of the Python software in this setup?

While the ESP32 boards handle low-level ranging and hardware communication, Python is typically used on a connected computer to ingest the raw distance data from the nodes, perform coordinate calculations (like trilateration), and visualize the tracked asset in real time.

Can I run this system using standard laptop USB ports for power?

Yes, during development you can power the ESP32 boards using standard USB ports, but using independent 5V USB power banks is recommended for the anchor nodes so they can be placed freely around the room without being tethered to a computer.

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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