Picture of Atmega168 TV-B-Gone
Yes, I know what you are thinking: "oh no, please not another TVBGone..."
Anyway, this instructable is for the newbies as me which are still experimenting with Arduino, and prefer to program an Atmega168 in Arduino than an AtTyny85 with other methods.
This circuit is based on Mitch Altman's TVBGone and on Ken Shirriff's blog where the software has been modified to match Arduino IC. I then decided to move the programmed Atmega on a dedicated pcb, and make everything fit in a transparent box  with a 9V rechargeable battery.
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Step 1: Choose the box

Picture of choose the box
The code which I've attached is the same you could download from Ken Shirriff's blog, meanwhile the pcb is designed to fit into the little box by Muji. Yes, another Muji box, and no, at Muji they don't pay me to find alternative uses for their boxes, however not yet ;-)
My TVBGone uses only a little IR LED, so it shouldn't be much powerful, anyway it's enough to turn off the unwanted tv with ads which had born as mushrooms anywhere in any station here in Milan, the difference is that mushrooms are very quiet...
TVB.zip20 KB

Step 2: The BOM

Picture of the BOM
Schematic is done with Diptrace, a free (for 250 pin max) pcb program which I found very convenient (except in components listing).
In pdf you will find the traces to transfer on the copper board and the top view with components position and values. Next is the bill of materials.
  • an ATmega168 with socket
  • a temporary NO button
  • a little switch
  • a 5V voltage regulator L7825CV
  • a 16000 hz quartz
  • an NPN transistor PN2222A
  • two coloured LEDs
  • an IR led
  • the following resistors: 220ohm, 10ohm, 1Kohm, 10Kohm, 47ohm
  • the following caps: 10uF, 22pF, 22pF 
  • a 9V battery with connections
  • a convenient box
  • a damned annoying television always turned on
ASCAS2 years ago
This should get featured! Only if there was a way to recommend the editors to re-evaluate the ible for getting featured :///
andrea biffi (author)  ASCAS2 years ago
Too kind, maybe readers are bored about TVBGone, anyway here in Italy (almost) nobody know it...