Programmable LED

Step 2 Materials and Tools

Materials
- 2 x 1K resistor
- 1 x LDR (Light Dependent Resistor), e.g. M9960
- 1 x Low-current LED, 1.7V, 2ma
- 1 x Atmel ATtiny13v, 1KB flash RAM, 64 Bytes RAM, 64 Bytes EEPROM, 0-4MHz@1.8-5.5V
- 1 x CR2032, 3V, 220mAh

Tools
- soldering iron
- solder wire
- breadboard
- AVR programmer
- 5V power supply
- multimeter

Software
- Eclipse
- CDT plugin
- WinAVR

Costs overall should be below 5$ without the tools.

I used the ATtiny13v because this version of this controller family is able to run at 1.8V. That makes it possible to run the circuit with a very small battery. To have it run for a very long time, I decided to use a low current LED which reaches full brightness already at 2ma.

Comments

[tintenfisch]

Hi, can you recommend a store where I can get the Atmel ATtiny13v, the other components and the tools required? (breadboard and AVR programmer) Cheers, Jonathan

[Rportal]

sparkfun.com wide variety and stock. reasonable prices.

[alex_weber]

Hi tintenfish,
looking at your nick, I assume you are living in a german speaking country?
For cheap ATtiny, have a look at: http://www.csd-electronics.de/de/index.htm
They have breadboards and other components as well. For a programmer, check out the USBtinyISP from adafruits.
Cheers,
Alex

[tintenfisch]

Hi, thanks for your reply :) You are almost right.. it is a German word and I'm from Sweden, but I live in New York City right now.. Do you know any stores in the states? Also, should I get SOIC or PDIP? Is there any difference between them? Cheers, J

[hoonflap]

sparkfun carries most of the atmel chips, and this instructable is a great intro to avr, with instructions on how to build a cheap programming cradle.

[alex_weber]

Hi Jonathan, I'm sorry, I don't know any stores in the US. But you should look for the PDIP package, that's the one I used. The other one is an SMT package and very tiny. Cheers, Alex

[Deyus]

You Can get a few different types of breadboards on this site how ever I don't know where to get the AVR programmer

http://www.abra-electronics.com/products/catalog/Boards-orderby0-p-1-c-7.html