UnoKeyer
After sliding some prototype board into one-half of an old equipment case, I marked out and drilled holes for the nine buttons required for the keyer. Sliding the board out with the holes the drill had passed through from the case top, gave me exact locations to solder the buttons.
The nine salvaged surface mount buttons recovered from old disused equipment were soldered in their locations and then the board was slid back into and out of the case top with any adjustments made to their locations needed.
Little plastic button extensions were made with some fiberglass rod and plastic sleeves I had on hand.
All button extensions in place and their location over the surface-mounted buttons underneath were checked for accuracy of placement
Resisters soldered to buttons duplex potential devider network
Ground wire link to all buttons solered in place
Button assembly installed in the top half of the case
Arduino Nano micro-controller placed on the main board along with the CW speed potentiometer.
LEDs in place along with clip and contacts for lithium battery
Close-up of sprung-loaded gold battery contacts
Key and TX sockets and components fitted and connected along with piezo buzzer.
The not-so-pretty tracks on the prototype board. Would have preferred to use an etched circuit board but this was quick and dirty to have the project complete in time for the club construction contest.
All components fitted in place and circuits checked before placing in the bottom half of the case
The main board in the case with the front and rear panels.
Close-up of the battery in its place
Rear panel with a hole for the USB sock to protrude
Artwork for the rear panel decal. See my page on how I make these:-Making Decals & Labels
Front panel Decal
Top decal with information of the commands available
The compleated contest keyer