Beetle CM-32U4 - Compatible with Arduino Leonardo - ATmega32U4 Shipping:2-4 Weeks it\'s the same means cellphones

it\'s the same means cellphones use to detect when the caller is holding their phone to their ear

They are available in a variety of different protocols to suit different applications

0mm pitch JST connector for Battery and Charger

The two pins in the middle are the RS485 signals

Beetle CM-32U4 - Compatible with Arduino Leonardo - ATmega32U4 Shipping:2-4 Weeks it\'s the same means cellphonesBeetle CM 32U4 is a micro Leonardo controller with an onboard charging chip. As an upgraded version of the DFRobot Beetle Board , this board is greatly optimized in integration and usability, which makes it well applicable to Arduino projects that require compact size and long service life. Just like the Beetle series, despite a mini body, it has powerful functionalities. On a size of only 22mm*20. 5mm, Beetle CM 32U includes most commonly used