Wi-Fi
1btn
An open source Wi-Fi connected IoT button
QUARK
A simple, open source, wireless, Arduino-based electronics multitool with a full-color screen and touch-based controls
Amp Smart Lighting Controller
Motion and gesture activated lighting for your bicycle, skateboard, backpack, etc.
HeartyPatch
An ECG patch with HRV monitoring that's open source, affordable, and Wi-Fi/Bluetooth connected.
Hornbill
An affordable, rugged, secure, and open hardware platform for battery powered connected things with ESP32
Winkel Board
Powerful, All-in-one, Arduino-compatible Development and Prototyping Board with ATmega128 at it's Core.