arduino
Arduino UNO Q Smart Doorbell Runs Its Vision Model On-Device
Banzi and Richetta live-build a doorbell whose face recognition never leaves the board. Here is the UNO Q hardware behind it and what you…
iot & smart home
Tiny Contacts Fits Four Relays Onto a 42 x 38 mm ESP32 Board
Four Omron surface-mount relays on a 42 x 38 mm board, driven by a ULN2003A so your ESP32 GPIO pins never touch a relay…
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…
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…
esp32 & esp8266
ESPHome Firmware Cuts the Litter-Robot 4 Free From the Cloud
A PIC runs the motors, an ESP32 just bridges Wi-Fi to UART. Reflash that ESP32 with ESPHome and the litter box answers to Home…
iot & smart home
Upline Puts an ATtiny85 Online Using 4,060 Bytes of Flash
Upline is an open source serial protocol that gets an ATtiny85 or Arduino UNO on the web through a USB cable, using 4,060 bytes…
iot & smart home
Run Gemma AI Offline on a Raspberry Pi 5 with Google’s LiteRT
Google's LiteRT runs Gemma models on a Raspberry Pi 5 at 99 tokens/sec prefill in 1432 MB of RAM, with no cloud and no…
esp32 & esp8266
ESPHome Starter Kit: ESP32-C6 Smart Home, Zero Soldering
Apollo Automation and the Open Home Foundation shipped a $40 ESP32-C6 kit that gets a local smart-home sensor node running without a single solder…
esp32 & esp8266
OpenMote Turns Your Old Wii Remote Into an ESP32 Smart Home Hub
A team gutted a dusty Wii Remote and dropped in an ESP32-S3 board, so the old wand can now fire Home Assistant scenes and…
iot & smart home
Challenger+ RP2350 NB-IoT: Cellular IoT on a Breadboard
iLabs' Challenger+ RP2350 NB-IoT puts a Raspberry Pi RP2350, cellular NB-IoT, and GNSS on one Feather board that fits a breadboard and charges over…
iot & smart home
NXP’s RW610FML Crams Wi-Fi 6, BLE, and a Cortex-M33 in One Module
NXP's RW610FML packs Wi-Fi 6, Bluetooth LE, and a 260MHz Cortex-M33 into one low-power module built for IoT sensor nodes and student builds.
iot & smart home
SiLabs BG2B: A Low-Power Bluetooth 6 Chip for Your Next Build
Silicon Labs' new BG2B packs Bluetooth 6, Channel Sounding, and a 1.1uA sleep current into one tiny SoC. Here's what you could prototype with…