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ESP32

Adopt

Tools

A low-cost microcontroller platform used for prototyping and device integration.

Why it's here

Placed in Adopt: 12 article(s) of evidence from 2 source(s), led by open-source activity, with 6 in the last 30 days. Confidence 63%.

Evidence (12)

  • 3Hacker News·9/28/2026product_launch
    PaperMono e-ink fridge magnet shopping list synced with a web app

    PaperMono is a homemade shopping-list device built on an M5Stack PaperMono e-ink touchscreen and mounted on a fridge magnet. It syncs over Wi‑Fi with a phone web app, works offline, and was largely generated with Claude Code rather than hand-written.

  • 8Hacker News·9/24/2026product_launch
    Espressif’s ESP32-S31 adds Linux-class features

    Espressif’s ESP32-S31 is a new microcontroller with unusually advanced peripherals, including gigabit Ethernet, USB 2.0 High-Speed host, dual SD card slots, camera input, and display support. The chip also uses dual RISC-V cores with full privilege modes and Sv32 paging, making it much closer to a small SBC platform than a traditional ESP32.

  • 5InfoQ·9/14/2026open_source
    ESP32 Bit Pirate Brings Browser-Based Microcontroller Debugging

    ESP32 Bit Pirate is a browser-based project that combines HTML5 APIs with multi-protocol hardware debugging. It lets users flash firmware and work with devices such as the ESP32-S3 directly in the browser, with guided recipes for tasks like memory dumping and signal analysis.

  • 6Hacker News·9/13/2026product_launch
    JetKVM Mini launches as a smaller, cheaper remote KVM

    JetKVM announced JetKVM Mini, a compact remote KVM device available in wired Ethernet and wireless versions starting at $39 and $42, with lower per-unit pricing in multi-packs. It retains JetKVM’s browser-based interface, cloud access, USB keyboard/mouse control, virtual media, and update system, while moving to a simpler ESP32-based hardware design.

  • 4Hacker News·9/4/2026open_source
    Open-Source eInk Bike Computer Built on LilyGO T5S3

    This Show HN project presents an open-source bike computer built around the LilyGO T5S3 4.7-inch E-Paper PRO board with ESP32-S3 hardware. It supports offline maps, GPS, BLE sensors, USB-C firmware installation, and includes tradeoffs such as no barometric altimeter, basic GPS, and no waterproofing.

  • 4Hacker News·9/1/2026open_source
    RotaryCell lets an unmodified rotary phone work over LTE

    RotaryCell is an open-source project that adapts an unmodified rotary phone to operate over LTE using an ESP32-S3. The project is showcased on GitHub and has drawn discussion on Hacker News for its hardware hack and retro-telephony appeal.

  • 3Hacker News·7/29/2026product_launch
    DIY ESP32 Stepper Motor Hack Makes a Window AC Smart

    The post describes a low-cost DIY project that automates an apartment AC unit with analog knobs by mechanically turning the controls using an ESP32-driven stepper motor. The setup integrates with Home Assistant over MQTT and uses a temperature sensor to switch the AC on and off while avoiding changes that could affect a rental security deposit.

  • 3Hacker News·7/26/2026open_source
    ESP32 Plane Radar Desktop Build Gets Firmware Upgrades

    A Hacker News post highlights an open-source ESP32-C3 project that turns a 1.28-inch round display into a live ADS-B aircraft radar. The author also describes firmware improvements such as richer flight context, weather and time data, configurable display options, and browser-based authenticated OTA updates.

  • 7Hacker News·7/25/2026open_source
    28.9M-parameter LLM runs on an $8 microcontroller

    A GitHub project demonstrates running a 28.9 million parameter language model on a low-cost $8 microcontroller. The repo appears to focus on making large-model inference possible on extremely constrained edge hardware, highlighting compact deployment techniques rather than a commercial product launch.

  • 6Hacker News·7/19/2026open_source
    HN: Open-source bowling alley control system built with ESP32s

    A bowling alley owner describes replacing a proprietary lane-scoring and control setup costing tens of thousands of dollars with a custom system built from ESP32 microcontrollers. The prototype uses ESPNow, RS485 fallback, a Raspberry Pi lane computer, and Redis to handle sensor events, relay control, and UI updates, with plans to open source the hardware, firmware, and software stack.

  • 5Hacker News·7/3/2026open_source
    Valve open-sources the Steam Machine e-ink front display

    Valve has published the design files and instructions for the Steam Machine's e-ink front display under the MIT license, allowing others to build their own version. The project, now called the "Inkterface," lists the required components and includes an assembly video on Valve's GitLab. The article suggests third-party accessory makers may eventually offer pre-built versions.

  • 4Hacker News·6/30/2026research
    Built a mmWave Radar for Material Classification

    An engineer described building a prototype mmWave FMCW radar to classify materials, with a focus on detecting asbestos-like surfaces. The system used a TI IWRL6432 radar module, ESP32, signal processing, Capon beamforming, and a neural network to generate and classify electromagnetic signatures. The project remained a prototype due to funding constraints.