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Work · alternatives · 2026

24 alternatives to Tommy – Turn ESP32 devices into through-wall motion sensors

Hi HN! I would like to present my project called TOMMY, which turns ESP32 devices into motion sensors that work through walls and obstacles using Wi-Fi sensing. TOMMY started as a project for my own use. I was frustrated with motion sensors that didn't detect stationary presence and left dead zones everywhere. Presence sensors existed but were expensive and needed one per room. I explored echo localization first, but microphones listening 24/7 felt too creepy. Then I discovered Wi-Fi sensing - a huge research topic but nothing production-ready yet. It ticked all the boxes: could…

Tommy is software that transforms ESP32 devices into motion sensors using Wi-Fi sensing technology to detect movement through walls and obstacles. It addresses limitations of traditional motion sensors by eliminating… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Hi everyone, I'm the author of ESPectre. This is an open-source (GPLv3) project that uses Wi-Fi signal analysis to detect motion using CSI data, and it has already garnered almost 2,000 stars in two weeks. Key technical details: - The system does NOT use Machine Learning, it relies purely on Math. — Runs in real-time on a super affordable chip like the ESP32. - It integrates seamlessly with Home Assistant via MQTT.

    Nov 2025 · github.com · its alternatives →

  2. 2

    This project is an RF Signal Scanner built using an ESP32, AD8317 RF detector, and various other components. It's designed to detect and measure RF signals in the environment and display the signal strength on an OLED display. It's useful to find hidden cameras, wiretapping devices, and other RF-enabled devices.

    2024 · github.com · its alternatives →

  3. 3

    This is a projected I started that blends both the fun of playing a split screen multiplayer driving game and controlling real rc cars. The cars can also be controlled via bluetooth gamepads and is meant to be easily hackable.

    2025 · github.com · its alternatives →

  4. 4

    High-precision indoor positioning framework for most wifi-enabled devices. - schollz/find

    2016 · github.com · its alternatives →

  5. 5
  6. 6

    Satellite Tracking and Alignment Resource

    2024 · star.conor.link · its alternatives →

  7. 7

    As part of a little research and also some fun I decided to try my hand at seeing how small of an ESP32 board I can make with functioning WiFi.

    Nov 2025 · github.com · its alternatives →

  8. 8

    Olaf - Acoustic fingerprinting on the ESP32 and in the Browser

    2020 · 0110.be · its alternatives →

  9. 9
    Duo▲84

    Chance to save lives. Mobile alerts for your gun safe & more

    2018 · indiegogo.com · its alternatives →

  10. 10

    Open-source ESP32 emulator. Run real firmware locally or in your browser — no hardware, no cloud, no subscription. - mikroverk/esp32sim

    7d ago · github.com · its alternatives →

  11. 11

    Hi HN! Last year the project I launched here got a lot of good feedback on creating speech to speech AI on the ESP32. Recently I revamped the whole stack, iterated on that feedback and made our project fully open-source—all of the client, hardware, firmware code. This Github repo turns an ESP32-S3 into a realtime AI speech companion using the OpenAI Realtime API, Arduino WebSockets, Deno Edge Functions, and a full-stack web interface. You can talk to your own custom AI character, and it responds instantly. I couldn't find a resource that helped set up a reliable, secure websocket (WSS) AI…

    2025 · github.com · its alternatives →

  12. 12
    Doppler▲157

    Motion sensing using your laptop's speakers and mic

    2015 · danielrapp.github.io · its alternatives →

  13. 13

    Estimote launching precise indoor positioning for robots & AGVs using UWB beacons In the beginning, our hardware and software were capable of just broadcasting and understanding iBeacon packets. But...

    2017 · blog.estimote.com · its alternatives →

  14. 14

    Code & schematics for position tracking sensor using HTC Vive's Lighthouse system and a Teensy board. - ashtuchkin/vive-diy-position-sensor

    2016 · github.com · its alternatives →

  15. 15

    High-precision indoor positioning framework, version 3. - schollz/find3

    2018 · github.com · its alternatives →

  16. 16

    IoT Suite for a Smart Home consisting of ESP32-WROOM, Arduino Nano/Uno/Mega, and Raspberry Pi - TheGeekExplorer/IoT-Home

    2022 · github.com · its alternatives →

  17. 17

    3D Sensor for iOS

    2013 · structure.io · its alternatives →

  18. 18

    Widget/UI to connect your app to all wearables

    2022 · tryterra.co · its alternatives →

  19. 19

    Plan your WiFi and see through walls

    Apr 2026 · deconflict.app · its alternatives →

  20. 20

    Super simple and accurate indoor positioning with the updated Estimote Indoor Location SDK Employing beacon technology to deliver indoor location solutions requires a deep understanding of the physics...

    2015 · blog.estimote.com · its alternatives →

  21. 21HA
  22. 22

    A pocket-sized security system

    2016 · indiegogo.com · its alternatives →

  23. 23

    Like nmap for mapping wifi networks you're not connected to, plus device tracking - calebmadrigal/trackerjacker

    2018 · github.com · its alternatives →

  24. 24

    An Arduino-compatible dev kit for wi-fi projects

    2020 · kickstarter.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →