SCINTIX P4 is an ESP32-P4 RISC-V Compute Module with an ESP32-C6 for wireless connectivity that’s compatible with Raspberry Pi CM4/CM5 carrier boards, at least partially. It should be the first MCU-based system-on-module in Raspberry Pi CM4/CM5 form factor, and RELOC says the SCINTIX P4 gives access to displays, cameras, Ethernet, USB, and all the peripherals the ESP32-P4 exposes when connected…

The ESP32-E22 tri-band Wi-Fi 6E and Bluetooth 5.4 module has received a Wi-Fi CERTIFIED certificate from the Wi-Fi Alliance, and Espressif has also released WiFi and Bluetooth Linux drivers for the chip. The ESP32-E22 was first unveiled at CES 2026 with a dual-core RISC-V processor clocked at up to 500 MHz, 1MB RAM, tri-band WiFi 6E tested up to 2.1 Gbps with iperf, and dual-mode Bluetooth…

M5Stack Capsule v1.1 is a Stamp-S3A-based IoT controller with a microSD card slot, several sensors (6-axis IMU, microphone), an IR transmitter, a built-in 250 mAh battery, a few buttons, a buzzer, an RTC, and expansion capabilities through GPIO headers and a Grove connector. It’s an upgrade to the earlier Capsule based on the Stamp-S3 module. The new version still features an ESP32-S3 WiFi and…

Seeed Studio Wio-S3 is a compact (21.6 x 16.5 x 3.3 mm) wireless module that combines an ESP32-S3R8 dual-core WiFi 4 and Bluetooth LE MCU and a Semtech SX1262 LoRa transceiver. The module includes 16MB Flash and 8MB PSRAM, and supports LoRa (EU868/US915) with up to +20.9 dBm transmit power and -137 dBm sensitivity. It also supports Wi-Fi 4 and BLE 5.0, and comes with two IPEX connectors for…

Ivan Svarkovsky’s S3-MSX-PC open-source project implements a bare-metal MSX2+ emulator running on an ESP32-S3 microcontroller and outputting 64-color VGA via a simple R-2R resistor ladder. It’s a fork of the Retro-Go emulator for ODROID-GO and other ESP32 devices, but with various optimizations. It was tested on an off-the-shelf ESP32-S3 board with one core handling the game logic and the other…

AkiraOS is a Zephyr-based embedded OS that runs sandboxed WebAssembly applications on microcontrollers and lets users deploy and update firmware OTA without reflashing. In other words, it’s similar to Docker containers, but for microcontrollers. The open-source embedded platform separates the OS from the application. That means the firmware stays stable, while apps are independent .wasm binaries…

Erqos EQSP32CE is a DIN rail-mountable industrial IoT PLC based on an ESP32-S3 WiFi and Bluetooth SoC and offering Ethernet, RS-485, RS-232, and CAN bus industrial communication interfaces. The IIoT logic controller also features several protected digital (16x) and analog (8x) inputs, eight current inputs, eight “special mode” analog inputs, and sixteen digital outputs with PWM support. A USB-C…

Designed by StillFixing in Normandy (France), the EKOS is a local-first, low-power ePaper dashboard built around an ESP32-S3 SoC. It operates without any cloud dependency, subscriptions, or external accounts, offering full privacy, faster response times, and direct local control. The device comes in two variants: the EKOS Pure is a minimalist, non-touch version with two physical buttons for basic…

Wireless-Tag has launched a Kickstarter campaign for the ESP32P4C61-TINY, a compact open-source AIoT development board based on their WT01P461-S1 module, which combines ESP32-P4 (general-purpose) and ESP32-C61 (wireless) RISC-V SoCs. Like other ESP32-P4 boards, including the ESP32P4C5 Core Board, the M5Stack Stamp-P4, or ESP32-P4-Pi-VIEWE, this one also uses a separate SoC (ESP32-C61) for…

Tanaka Masayuki’s PCMFlow722 library enables (half-duplex) two-way real-time HD voice over ESP-NOW on ESP32 boards with a speaker and a microphone, effectively transforming them into walkie-talkies. The library implements a G.722 wideband codec add-on for PCMFlow lightweight audio decode and PCM flow library for Arduino, which already supports uncompressed PCM, MP3, and FLAC audio codecs. PCM and…

The HW1 by Gesture Platforms is a 10-degree-of-freedom (DOF) high-dexterity robotic hand and wrist built around an ESP32-S3 wireless MCU. It’s primarily designed for researchers, educators, and hobbyists; it bridges the gap between basic DIY robotic hands and expensive industrial models. The device weighs just around 500 grams but can handle a 1kg dynamic load and a 3kg static load. It…

Dutch hardware designer LichtBit has launched a fully open-source ESP32-based Art-Net/sACN NeoPixels LED strip controller designed for large-scale lighting installations and custom stage design. Built around an ESP32, the hardware routes lighting data over wired Ethernet or Wi-Fi to manage up to 16 universes of addressable LEDs across 4 dedicated outputs. We have previously written about various…

PolyCast5 is a portable, hackable ESP32-C5-based multi-tool remote to control devices through five different core wireless technologies: WiFi 6, Bluetooth LE, ESP-NOW, LoRa, and infrared Tx/Rx. The all-in-one controller can be used for cybersecurity work, a standard IR learning remote control, a voice-enabled password manager, a robotic arm controller, an AI keyboard using the built-in microphone…

ESPHome 2026.5.0 has just been released with the beta version of the new ESPHome Device Builder web app that replaces the legacy in-tree dashboard with a real configuration editor, a firmware job queue, multi-select bulk actions, labels and areas, out-of-sync detection, cross-config search, distributed builds, and a proper settings UI. The firmware itself gains optimizations of the main loop,…

Yesterday, I wrote about the OpenTrafficMap ESP32-C5 C-ITS receiver board to monitor and potentially optimize traffic using 802.11p / ITS-G5 V2X communication over 5.9 GHz WiFi 6, and map all detected nodes on the OpenTrafficMap website. Peter Holzhauser (Pit711) forked the ESP32-C5 C-ITS receiver firmware to port it to the Waveshare ESP32-C5-WIFI6-KIT development board and added BLE streaming.…

The ESP32-C5 C-ITS receiver project is an open-source hardware board that gathers data over 802.11p V2X communication from nearby traffic lights, public transportation (buses, trams…), trucks, cars, motorcycles, and even pedestrians to display the results on online maps. It works using the ITS-G5 protocol built on top of 802.11p V2X (Vehicle-to-Everything), which requires a 5.9 GHz WiFi radio,…

Two ESP32-S31 development boards are currently in the works, and the documentation is already available. The ESP32-S31 was unveiled last March, and it’s the most feature-rich ESP32 wireless microcontroller so far with two RISC-V cores, Gigabit Ethernet, 2.4 GHz WiFi 6, Bluetooth, and 802.15.4 connectivity, LCD and camera interfaces, and more. The ESP32-S31-Function-CoreBoard-1 development board…

M5Stack Core StopWatch is an ESP32-S3-powered WiFi and Bluetooth development board with a 1.75-inch round AMOLED touch display, 16MB flash, and 8MB PSRAM designed for portable IoT devices, electronic badges, and wearables. The device also features a 1W speaker and a MEMS microphone for voice interaction, two programmable buttons, a vibration motor, a 6-axis IMU sensor, an RTC, and expansion…

Little Gadgets’ Hacknect is an ESP32-S3-powered wireless USB Type-A hacking cable with Wi-Fi control, HID automation for keyboard/mouse events, payload deployment, and a microSD card slot hidden in one of the Type-A connectors. The USB cable is designed for makers, developers, automation enthusiasts, and cybersecurity researchers and can be wirelessly controlled from your smartphone or computer.…

The ESP32-S3 PowerFeather V2 board is an ESP32-S3 WiFi and BLE IoT board with an Adafruit Feather form factor that supports LiFePO4/LFP batteries, as well as Li-Ion or LiPo batteries, and up to 18V DC input for solar panel connection. As one could have guessed, it’s an update to the ESP32-S3 PowerFeather board introduced in 2024 with support for solar panel input, Li-Ion, and LiPo batteries. The…

Rev Adrian Kennard (RevK) has designed several open-source hardware ESP32-S3 WiFi and Bluetooth IoT boards with WAGO connectors for interfacing LED strips, buttons, and other GPIO modules. Initially developed for the gloves and the helmet of an Iron Man suit, the ESP32-S3 boards can be used for any relevant project that needs more flexibility than soldered modules and more reliability than GPIO…

Anthropic has opened its Claude Hardware Interface (Bluetooth API) to developers, enabling an ESP32-S3-based desk companion to connect directly to the Claude desktop app over Bluetooth Low Energy (BLE). To demonstrate this new feature, the company released an open-source reference project called Claude Desktop Buddy. It currently runs on the M5StickC Plus (an ESP32-based board from M5Stack) and…

M5Stack PaperColor, or M5Paper Color, is an ESP32-S3 development kit with a 4-inch E Ink Spectra 6 full-color display with a resolution of 600×400, designed to offer both low power consumption and high visibility under strong lights. While the color ePaper display is the start of the show, the devkit also features a microSD card slot for storage, a microphone with echo cancellation, a 1W speaker,…

Clawdmeter is a DIY ESP32-S3-powered desk dashboard that displays Claude Code token usage on a 2.16-inch AMOLED screen so you know when you’re about to reach the limits in real time. It’s mostly a firmware project since it relies on off-the-shelf hardware (Waveshare ESP32-S3-Touch-AMOLED-2.16). It leverages the LVGL library for its graphics user interface, the NimBLE stack for Bluetooth LE (BLE)…

MiixKey is a compact, offline ESP32-P4-based hardware security key and password manager that securely stores passwords, passkeys, NFC cards, and smart card credentials in a single portable device. It features a 2-inch touchscreen and is designed for users, developers, enterprises, government staff, and cybersecurity professionals who need secure offline credential management without relying on…

We’ve come across an ESP32-P4 + ESP32-C5 board that looks similar to the Wireless Tag WTDKP4C5-S1 board, but is even more compact and features four MIPI connectors, including two whose pinout is compatible with Raspberry Pi camera modules and displays. Maker Go calls it the “ESP32P4C5 core board” and features an “ESP32-P4-Module” with ESP32-P4 MCU with 32MB PSRAM, an ESP32-C5 dual-band WiFi 6…

ESP-FLY DIY kit is a miniature DIY drone kit based on Seeed Studio’s XIAO ESP32-S3 board that was initially introduced as a DIY project on Instructables by Max Imagination, but is now available as a complete kit for $59.99 on Seeed Studio. It’s certainly not the first ESP32 drone, but the ESP-FLY drone must be the smallest, as the miniature (67 x 67 x 31mm) quadcopter design allows users to store…

M5Stack has just launched the Cardputer Mesh Kit, a portable, card-sized Meshtastic communication terminal built around the ESP32-S3-powered Cardputer-Adv controller and a new LoRa expansion module (CapLoRa-1262). The kit is essentially a modular upgrade to the original Cardputer, where the base unit handles the UI via a 56-key keyboard and a 1.14-inch LCD. The added “Cap” module adds a Semtech…

The MiciMike Home Mini Drop-In PCB is an open-source replacement mainboard designed to convert a 1st Gen Google Home Mini into a fully local, privacy-focused voice assistant running Home Assistant Voice. Built around an ESP32-S3 MCU and an XMOS XU316 audio processor, it removes cloud dependencies without any case modifications or soldering. The board offers on-device wake word detection, echo…

MoreSense MS-07 indoor air quality monitor is built around the Sensirion SEN66 multisensor, powered by an ESP32-S3 microcontroller, and features a 3.5-inch capacitive IPS touchscreen for local data visualization and control. The MS-07 is a direct upgrade to the earlier MS-06, replacing the Sensirion SCD40 used for basic CO₂, temperature, and humidity measurement with the more advanced Sensirion…