Technically, because TV-B-Gone is a brand name, this is a "TV-B-Gone clone."
The TV-B-Gone is a neat little device that can turn almost any TV on or off. It uses a microcontroller hooked up to IR LEDs to output a library of on/off codes. Adafruit sells a kit, and has the code as well as the schematic on their website.
Here's a micro clone of the TV-B-Gone that runs on a coin cell battery, is slightly bigger than a quarter, and costs about $3.50 (compared to $20) to make!
Step 1: Materials and Tools
- Attiny85v microcontroller - $1.82
- CR2032 battery holder - $0.62
- 8MHz resonator - $0.50
- Wide-angle IR LED - $0.20
- Narrow-bean IR LED - $0.18
- NPN transistor - $0.10
- 150 ohm resistor - $0.05
- 22uf capacitor - $0.02
- Small pushbutton - $0.27 (note: this is slightly different than the one I used)
You will also need some 2032 batteries to power it. DON'T FORGET!
- AVR programmer (I used a USBtinyISP, a good, cheap programmer made from a kit)
- Computer with internet access; I predict you are using one right now :-)
- Soldering iron with solder
- Helping hands tools, very helpful