esp32 & esp8266
Build a Subscription-Free ESP32 Smart Thermostat for Your Home
An ESP32, a temp sensor, an OLED and a relay board replace a subscription thermostat. Parts list, wiring notes and a split-type aircon twist…
esp32 & esp8266
Olimex UEXT-CH390 Adds Wired Ethernet to ESP32 and Pico
Olimex's EUR 4.95 UEXT-CH390 brings 100 Mbit wired Ethernet to RP2040 and ESP32 boards, with ESPHome support. Here is a weekend plan to try…
esp32 & esp8266
ESP32-CAM Turns a Cheap Blood Pressure Monitor Smart
Tomasz Burzy gave a secondhand blood pressure monitor Wi-Fi by pointing an ESP32-CAM at its seven-segment display. No OCR, no reverse engineering.
diy projects
Analog Redial: ESP32-C6 Brings Rotary Phones Back to Life
An ESP32-C6, an audio codec, and a SLIC chip let old rotary phones call each other, run an answering machine, and even ring for…
esp32 & esp8266
Turn Escape Room Puzzles into Home Assistant Devices with ESP32
Two open source Arduino libraries turn escape room puzzles into Home Assistant devices over MQTT. Here's the parts list and the I2C wiring to…
iot & smart home
Raspberry Pi Runs Home Assistant to Track Its Own Net Zero Goal
Raspberry Pi clamped sensors on every breaker and ran Home Assistant on Pi 4 and Pi 5 to cut energy use. Here is how…
esp32 & esp8266
LocalDot: Give an Echo Dot a Local Home Assistant Brain
AAElectronics' LocalDot swaps an Echo Dot's mainboard for an ESP32-P4 and ESP32-S3 that talk only to Home Assistant. Here's how it works and how…
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…
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…
diy projects
Louder ESP32: A $50 Multi-Room Audio Amp That Rivals Sonos
A $24 ESP32-S3 board with an onboard Class-D amp, a USB-PD trigger set to 20V, and Music Assistant add up to a networked stereo…
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…
esp32 & esp8266
ESP-KVM Turns an ESP32-P4 Into a $45 Open-Source IP KVM
A locked-up PC with no monitor nearby? ESP-KVM runs on an ESP32-P4 and hands you keyboard, mouse, and screen control from a browser for…