Trinket m0 CW Beacon Case

thingiverse

This is an Adafruit Trinket m0-based morse code (CW) beacon keyer that I built using:\r\n* A snappable bread board from SB4 https://amzn.to/2Y9EQSZ\r\n* An Adafruit Trinket m0 microcontroller\r\n* A red LED for visibility\r\n* A 2N3904 NPN transistor for amplification\r\n* A 220 ohm resistor to regulate current\r\n* A TRS 3.5mm stereo cable for connectivity\r\n* This Arduino code: https://github.com/denmojo/morse-table\r\n\r\nThe case is designed to fit a 1/4 portion of the snappable bread board, accommodating larger microUSB connectors. The top hole houses the LED, while the bottom hole accommodates the CW cable. Red and black wiring connects to the tip and ground of the 3.5mm TRS cable, keying a radio in straight key mode.\r\n\r\nSimply plug in USB power (5v) and connect it to a ham radio keyer port, and you'll have a foxhunt beacon or dedicated CW beacon at your fingertips.