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Arduino's new DIY electronics starter kit has an UNO R4 board

A rduino boards are a popular choice for DIY electronics, but it's not always clear how to get started with building projects ...
EDN

Bilateral Bluetooth Communication with M5Stack and Smartphone

M5Stack is an open-source development kit compatible with Arduino (see Figure 1). It can be used to create applications very quickly. The kit includes the main unit, the USB type-C cable, and cables ...