esp32 & esp8266
Build a Buzzing Hazard-Alert Wearable With an ESP32 and Gas Sensor
NC State's solar-powered patch buzzes when it senses toxic gas. Here's how to build a simpler ESP32 hazard-alert wearable this weekend.
esp32 & esp8266
Open RC Spotter: An ESP32 Data Logger for RC Car Racing
Open RC Spotter is an open-source ESP32 data logger that records GPS, IMU, throttle, and temperature from your RC car for pro-level lap analysis.
esp32 & esp8266
M5Stack PowerHub: An ESP32 Dev Kit That Smartly Manages Power
M5Stack's PowerHub pairs an ESP32 with an STM32 coprocessor and INA226 sensors to measure and switch power per channel, all from a Sony NP-F550…
microcontrollers
CircuitPython 10.3.0 Alpha 4 Brings Audio Effects to RP2040
CircuitPython 10.3.0-alpha.4 adds new audio effects to RP2040 and RP2350 boards, three settings.toml keys, and an SPI baudrate change worth knowing.
diy projects
ESP32 Bowling Scoring System Beats a $120K Proprietary Quote
An engineer replaced a $120,000 bowling scoring system with $1,600 of ESP32 boards, ESP-NOW mesh, and a Raspberry Pi. Here is how OpenLaneLink works.
esp32 & esp8266
An ESP32 and Eight ToF Sensors Give This Antique Lamp a Sixth Sense
A brass heirloom lamp gets eight ToF sensors, an ESP32, and a Raspberry Pi so it glows and sings when you walk near it.
diy projects
ESP32 Mesh Replaces a $120k Bowling Scoring System for $1,600
An abandoned 8-lane bowling center needed an $80k scoring system. One builder replaced it with an ESP-NOW mesh of ESP32s for about $1,600 instead.
diy projects
Penn State’s Paint-On Electronic Tattoos Read ECG, EEG and EMG
Penn State's brush-on conductive ink turns bare skin into a washable electrode that records ECG, EEG and EMG, and even drove a robotic hand.
esp32 & esp8266
Solar Devboard V1: An ESP32-C6 Sensor Node That Charges Itself
Andrei Pokotylo's Solar Devboard V1 packs an ESP32-C6 and a BQ25186 charger so remote sensor nodes top up their own battery from an 18…
esp32 & esp8266
Build a Solar-Powered IoT Node with This ESP32-C6 Board
An ESP32-C6 dev board built for solar IoT: BQ25186 charging, reverse-voltage protection, QWIIC I2C, and ten GPIO pins for cable-free sensor nodes.
esp32 & esp8266
Focus: The Open-Source UI Framework Behind an ESP32 E-Reader
Focus is an open-source C++ framework that brings app-style menus, view controllers, and safe scheduling to the ESP32 and other tiny-RAM boards.
diy projects
Duality Canvas: Build a Wall-Sized ESP32 LED Display With WLED
Andy Huot's Duality Canvas tiles 16x16 addressable-LED PCB panels into a wall-sized display you can scale to any size, driven by an ESP32 and…