diy projects
Retro Brick Bluetooth Handset Built with ESP32 and an HFP Module
A retro brick handset pairs with your phone over Bluetooth. See why the ESP32 audio sounded crunchy and how a dedicated HFP module fixed…
esp32 & esp8266
Q8botOne: A Palm-Sized Wire-Free Quadruped on an ESP32-C3
Q8botOne packs eight smart servos and an ESP32-C3 into a 250 g quadruped with no wiring harness. See how its single-PCB design works and…
diy projects
ESP32-S3 AM Transmitter Revives Old Tube Radios
AM stations are going dark, but an ESP32-S3 can feed internet radio to old tube sets by shaping a carrier on one GPIO pin…
esp32 & esp8266
ESP32 as a Wi-Fi Card for Raspberry Pi and Linux SBCs
No USB port and weak Wi-Fi on your Linux board? esp-hosted turns an ESP32 into a wireless card over SPI or SDIO. Here is…
diy projects
SmallTV Hack Shows Any Data on a Cheap ESP Display
A GeekMagic SmallTV can show live data from your PC with no soldering and no new firmware. Just push a 240x240 image over HTTP…
diy projects
Two ESP32s Talk Over Light Using Just One LED Each
SecurePair lets two ESP32 boards pair and swap encryption keys over visible light, with one LED per board doing double duty as sender and…
esp32 & esp8266
TNY-360 v2: An Open-Hardware ESP32-S3 Robot Dog Kit
The TNY-360 v2 quadruped uses an ESP32-S3, modular PCBs, and a 200 Hz control loop on two cores, so legged robotics is less of…
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
ESP32-S3 vs Raspberry Pi 5: How Much Edge AI Is Enough?
A $20 ESP32-S3 camera board vs a $200 Raspberry Pi 5 AI kit on a robot mower. See which edge AI hardware your student…
diy projects
Walnut-Shell IR Remote Built on a XIAO ESP32-C3 and Wi-Fi
A real walnut now hides a Wi-Fi infrared remote on a XIAO ESP32-C3, with four IR LEDs, a MOSFET driver and a 6-day battery.…
diy projects
DIY Brain-Computer Interface: 8-Channel EEG on an ESP32
An ESP32, an ADS1299 ADC, and a custom 4-layer PCB make an 8-channel EEG headset under $350. Here is how to scale it down…
esp32 & esp8266
KryonOS Turns Your ESP32 Into a Tiny JavaScript Desktop
Tired of reflashing your ESP32 for every idea? KryonOS runs JavaScript apps on a desktop-style OS with a file manager, app store, and 3D…