esp32 & esp8266
Build a $10 ESP32-C3 Fridge Monitor That Logs Its Own Data
A $10 XIAO ESP32C3 and a DHT22 keep 30 minutes of fridge temperature history on-device, cutting network traffic by 92 percent. A tidy weekend…
robotics
Bird-Inspired Drone Perches Using 9 Touch Sensors, No Camera
TU Delft's drone finds a branch with nine one-bit touch sensors instead of a camera, hitting a 99% perch rate even when its position…
esp32 & esp8266
Build a Palm-Vein Biometric Door Lock with an ESP32 and IR Camera
An ESP32, a DFRobot dual-camera module and 940nm infrared light read the veins under your palm. Here is the parts list and the wiring…
iot & smart home
WeatherXM D2 Mesh: A Solar LoRa Weather Station With No Wi-Fi
A solar weather station that reports over a LoRa mesh instead of Wi-Fi or cellular, plus how to build a cheap ESP32 version of…
arduino
An Arduino Nano ESP32 Robot Flips All 666 Pixels of This Display
Most flip-disc displays need one solenoid per pixel. This 666-tile panel uses a single Arduino Nano ESP32 gantry robot that prods each tile instead.
diy projects
Build a Digital Nose: an SGP30 Sensor That Sniffs Out Spoiled Milk
Your nose gives a yes-or-no answer. An SGP30 gas sensor gives you a number you can plot, and the whole freshness checker is a…
robotics
Ice Dart: The Drone That Spikes Itself Onto a Drifting Iceberg
Canadian roboticists built a quadcopter that lands on slippery icebergs, drives retractable spines into the ice, and hangs on at a 60-degree tilt.
news & releases
Adafruit GP8403 I2C DAC Pushes Analog Output All the Way to 10V
Most DACs cap out at 5V. The GP8403 breakout boosts to a real 0-10V analog output over I2C, which unblocks fan drivers, bias rails…
esp32 & esp8266
MaTouch ESP32-S3 MaUWB: UWB Indoor Positioning On-Screen
Makerfabs' MaTouch ESP32-S3 MaUWB puts Ultra-Wideband ranging on a 3.95-inch touchscreen, promising a live indoor positioning demo in three minutes.
robotics
Aliensense NXS Sends mikroBUS Sensors Down One Robot Cable
Aliensense's NXS hub pushes power, video, and sensor data over a single cable up to 40m, linking mikroBUS Clicks and MIPI cameras to your…
microcontrollers
SensWear Puts an Open Source Wearable Stack on the nRF54L15
SensWear bundles an nRF54L15 board, swappable PPG, temperature and touch sensor modules, Zephyr firmware and open SDKs to fast-track wearable prototypes.
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.