diy projects
Build an ’80s Brick Phone with a Raspberry Pi Pico and Bluetooth
A Pico, a Bluetooth HFP module, and a keypad turn into a retro brick handset that answers your iPhone's calls. Here is how it…
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…
arduino
This Arduino Watches a Treadmill With a Webcam to Clock Speed
A rented treadmill, a USB webcam, and an Arduino VENTUNO Q: an on-board neural net reads belt speed and broadcasts it over Bluetooth as…
diy projects
Penn State’s Paint-On Electronic Tattoos Read ECG, EEG and EMG
Penn State's brush-on conductive ink turns bare skin into a washable electrode that records ECG, EEG and EMG, and even drove a robotic hand.