QRA JO01OX, WAB TM23, Fists #16909 GQRP #15161 DMR-ID 2342670

I do like touch paddles. You never need to adjust them, they just seem to work. In the past I've build a paddle using the kit supplied by John G0OKD and had great success with it. Sadly John no longer supplies those kits so I've been on the look out for a replacement.

My search took me to ebay where I found a TTP224 4-way Capacitive Touch Switch Module Digital Touch Sensor For Arduino EF. It's based on similar technology to the paddles designed by John and it's cheap - 99p including postage and packing! How could I go wrong?

Due to the price and its location I had to wait a while for it to arrive but arrive it did. It had four touch pads labelled 1 to 4 so the first job was to remove the paint from two of them to allow for easy soldering.

I then added two simple paddles.

And finally two 2N7000 MOSFET transistors on outputs 1 and 4 to switch the transceiver.

On breadboard this looked like:

I applied a 5 volt power supply, plugged in my FT-817ND and called CQ. Before I knew it I was in a QSO with Ken G4RHR. All I need to do now is box it!