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…
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.
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…
diy projects
Open Book Touch: The ESP32-S3 E-Reader Built to Be Hacked
A $149 open-source e-reader runs on an ESP32-S3, sips under a milliamp while reading, and hands you the firmware, PCB, and CAD to hack…
diy projects
The PocketMage: An Open-Source ESP32-S3 E Ink PDA Goes Live
Meet the PocketMage: an open-source ESP32-S3 pocket PDA pairing a dual E Ink and OLED display for distraction-free writing, notes, and light coding.
esp32 & esp8266
RTK GPS on a Budget: Centimeter Accuracy with an ESP32 Rover
Standard GPS is off by 15 feet. See how an ESP32 rover and an affordable RTK kit hit half-inch accuracy for capstone and robotics…
diy projects
The Tanmatsu Handheld: An ESP32-P4 Palmtop Built for Hackers
Born a conference badge, the Tanmatsu is now a real open-source ESP32-P4 palmtop. Here is how the RISC-V handheld actually holds up a year…