Once the idea came to me, I had to design the blasted thing. I started initially by researching the schematics for the TV-B-Gone. I knew this was what I needed to use, but there was no way I could fit all of that inside any
Sonic Screwdriver. Meanwhile, I started looking at various Sonic Screwdrivers available online, and at first, I wanted to use this
, but not only was it too small, but it didn't make noise, and had multiple inaccuracies from the one on the show. Ultimately, I settled for this
instead, a bit pricier, but altogether worth the extra money. The added price meant that I had to bring in extra friends, and luckily they were willing to chip in as long as they got credit too. With the Sonic Screwdriver picked out, I had to get back to designing the circuit that would flash the codes. Mine is heavily based off of Ladyada's TV-B-Gone, but with fewer parts in order to fit inside of the Screwdriver. After a quite lengthy conversation
, I concluded that the only parts that I had to order were a microcontroller, a resonator, an LED, a transistor, and two resistors. I also ordered a capacitor as you will see in the pictures I took, but ultimately left it out due to size restrictions. Another help was Panik
, from the Raspberry Pi forums. As you can see here
, he helped me learn how to program an Attiny with my Pi. Once I had the parts figured out, I drew up a set of schematics shown above using SchemeIt
, a free online schematics designer provided by Digikey.