Articles / Miscellaneous SparkFun.com - serious deal on PCB prototypes January 17, 2005 1 comments Are you thinking of building your own theremin? If so, be sure to check out SparkFun.com's deals on printed circuit board (PCB) orders. Their current price is just $2.50 (USD) per square inch with no setup fee and no minimum! Posted by Jason January 17, 2005