The SmartBadge from the NJQRP ...
The Badger Photo Gallery
Shown above is a close-up of a HOMEBREW
on the "paddle pads" provided on the back of the Badger pc board.
The paddle arm was created using a pair of tin snips to cut off a thin strip
of scrap double-sided pcb material, then straightening out the curl from
the cutting process and filing it smooth and straighter yet. A needle
could even be used here, but you'd want to be careful who you poked
into in this case! The end of the arm is soldered to the common/ground
pad close to the battery, and angled up just a bit to be suspended in the air
at the point of the dit and dah contacts near the board edge. Those paddle
contacts were created by soldering some small square scraps of pcb material
at right angles on the pads such that the arm is not touching either contact
when at rest. Note that it's easier to solder the dit and dah contacts in place
first, then solder the paddle arm in place. Also, be sure to solder both sides
of the paddle arm and each contact so as to ensure a good connection when
the paddle arm is bent to either side to create the Morse code. Overall, this
paddle "works" in a fun-type scenario, but you wouldn't want to use it in a
contest or a long duration rag chew. BE CREATIVE! There are some guys
building some nice, screw-adjustable contacts onto the board, or
putting a nice connector on the board edge to accommodate their
Schurr PROFI-2 gold plated paddle, or ... how inventive can *you* be
for the homebrew contest on Saturday night at Atlanticon?!
by AA3WM, Bryan Williams
The paddle is made out of a paper clip (it is able to be formed, and it still retains some "spring").
The right hand side is a piece of double-sided PC board that was first superglued
right between the dih and dah pads (for ease of soldering), then soldered to both pads
(one side to each pad). I added a bit of solder to the paper clip arms in order to make a
little bit more solid contact when pressed. I'm not that "fluent" with iambic paddles yet,
but it seems to work OK.