This is going to be a fun little project where you, by your own hands and tools, will make your guitar go WIRELESS. Now, I'll lay out the cons right away for you – we use an FM band in this tutorial, which requires antennas that, while not too long, aren't the shortest either. The second con being that we here at Techjango, being the bare-wallet'ed engineers that we are, have to keep our costs low, and so the FM transmitter and receiver modules we used weren't exactly the most precise, audiophile-happy ones.
Now, why do this? Maybe you're room is incredibly messy and you want to avoid an additional cable. Maybe you want to have a 'ghost' (guitar) amplifier just to spook your friends. Maybe you're a newbie to wireless transmission and want to sink your teeth in just a little bit. Even if its none of these, there's always one never-ending reason – to learn and to have fun, simultaneously.
Step 1: Parts
-Two Arduino-bootloaded atmel microcontrollers. An fresh atmega8 costs, what, ~$5? You can use one of the many means available on the Great Goog in the Sky to write the Arduino bootloader onto the microcontroller. We happened to have two spare Arduinos so we just used the Atmega chips right off them.
-Two 16 Mhz oscillators, each costing around the same as a speck of dirt.
-Two 7805 regulators, or similar – cost $1 or less.
-A TL071 opamp or similar – also costs $1 or less.
-A 1/4” female TRS plug. Costs $2 or less.
-Several Rs and Cs– You should have lots of these with you already (or at the very least, know where to get them from in the handfulls) if you're even a beginner in electronics. Also dirt-cheap.
(pssst - a good directory of distributors)