esp32 & esp8266
EITWatch: XIAO ESP32-S3 Reads Hand Gestures Through Your Wrist
Northwestern's EITWatch hides 8 electrodes under a 40 mm watch and reads fist, pinch and point gestures at 91% accuracy with a XIAO ESP32-S3.
raspberry pi
DIY LiDAR Smart Glasses Turn Obstacles Into Vibrations on a Shirt
Three 512-zone LiDAR sensors, a Pi 4 and 16 vibration motors let a blindfolded wearer feel obstacles. What worked, what failed, and a student…
news & releases
Adafruit MCP2222 Breakout Gives Your PC I2C, SPI and GPIO Pins
Skip the microcontroller: Adafruit's $10.95 MCP2222 USB-C breakout lets a Python script on your laptop drive I2C, SPI, UART and GPIO parts directly.
sensors & modules
Why Every I2C Board You Design Should Get a Qwiic JST-SH Port
One JST-SH socket on every I2C board turns wiring, debugging and sensor swaps into a plug-in job. Here is the weekend retrofit plan plus…
esp32 & esp8266
M5Stack Core Matrix: ESP32 Board With a 16×16 LED Grid
M5Stack's Core Matrix packs a 16x16 LED grid, ESP32-C61, IMU and Wi-Fi 6 into one board. See the specs and three classroom-ready project ideas.
raspberry pi
Build a Solar-Powered Raspberry Pi Zero W Weather Station
Jack Young's mobile weather station runs on a Pi Zero W and a solar panel. See the IP65 enclosure lessons and how to build…
microcontrollers
Seeed XIAO STM32C5: First ST Chip in the Tiny XIAO Family
Seeed's XIAO STM32C5 packs a 144 MHz Cortex-M33, two CAN FD buses and a heated IMU on a thumb-sized board for under $11. Here…
raspberry pi
Adafruit LT8912B Turns DSI Into HDMI for Pi 5 and ESP32-P4
A small converter turns the DSI signal from a Raspberry Pi 5 or ESP32-P4 into HDMI, up to 1080p60, configured over I2C. Here is…
esp32 & esp8266
ESP32 Demoboard Adds 5 Sensor Projects: NFC, Lightning, Gestures
Five new Arduino demos for an ESP32 demoboard cover gesture sensing, lightning detection, NFC, air pressure and a PIR alarm. Pick one for your…
diy projects
DIY Handheld Spectrometer Uses a TCD1304 CCD and STM32
An STM32 board, a TCD1304 linear CCD and a 4-inch SPI display turn a diffraction grating into a battery-powered pocket spectrometer you can carry.
diy projects
Hidden Lockbox Opens Only to a Secret Magnet Gesture
No keyhole, no keypad: a Teensy 4.1 and an 8x8 Hall-sensor grid unlock this wooden box only when you trace the right magnetic gesture.
esp32 & esp8266
Proton AI Core Vision+: ESP32-S3 Board With Camera, Mic and IMU
Protonverse Labs packs a 5 MP camera, MEMS mic and 6-axis IMU onto one ESP32-S3 board. Here is what it offers and how to…