Archive for date: February 18, 2012

A simple beacon keyer for the ATtiny13

February 18, 2012 | Arduino | By: Mark VandeWettering

Roger, G3XBM built a simple beacon for light communication using a K1EL beacon keyer chip and a handful of other components. I didn’t have any of those chips around, but I did have some Atmel ATtiny13s lying around. I hacked this simple program together to send Morse code in two different ways: on pin PB1 […]