Atmel microcontroller Board with Led indicator wristwatch ATmega32U4 project there is no usb connection and SD card connection, the advanced charging system, piezo sensor, etc. are included in the design of printed circuit boards PCB source code very well,... Electronics Projects, Atmel LED Multi-Function Display ATmega32u4 Watches "avr project, microcontroller projects, " Date 2019/08/03