Miller sells a wireless foot pedal for around $600, which seems a little expensive for what it does. The average foot pedal has only two components, a switch (for on/off), and a potentiometer(for current control). I was thinking it wouldn't be too hard to DIY something like this using maybe a couple of Arduino BTs, or some type of 2.4Ghz RF link. I just don't know where to start. I can go to the Arduino site and after about 10 minutes I am lost. Does anyone have any suggestions on hardware? I can learn the software side, and what better way than to immerse myself in a 'relatively' simple project. I was also thinking something like this might work as well:

http://www.digikey.com/product-detai...805795?cur=USD


Anyways you kind of get the idea. What do you all think?