Adafruit 2.5W audio amp breakout plus tiny speaker for the win

First signs of life from the he K3NG Arduino CW keyer

Starting a new build — the K3NG Arduino CW keyer, packaged into an Altoids tin.

An Arduino-based K3NG CW keyer packaged into an Altoids tin

A CW beacon distraction becomes the main focus

A 1W 15m CW beacon based on Doug DeMaw's Lil' Slugger CW Transmitter design