Below there is a list of symbols and footprints prepared by me for gschem and xpcb software packages, maybe this will save somebody some time.

The list is really short at this moment, but I will expand it in time.

[ Read more → ]

Today I would like to show and describe you my keypad with serial interface mini project which we can directly connect to mcu UART (for me it was Atmega8 and Atmega32, but you can connect it with any other chip with build-in uart).

Numeric keypad with serial or SPI interface

[ Read more → ]