5 |
× |
Piezo disc
$1.12 from fasttech.com
|
1 |
× |
Atmega8A
$1.40 from ebay (I bought 5 pieces for $4.22
|
1 |
× |
A4 sheet of 120g black paper
$0.29 at local store. I used Canson Vivaldi paper.
|
1 |
× |
A4 sheet of 240g white paper
$0.49 at local store. I used Canson Vivaldi white n°1 paper
|
3 |
× |
meters of 30 AWG white wire.
$1.49 for 10 meters on ebay. Single core is better. You can buy black wire, or use black marker.
|
1 |
× |
Cyanoacrylate glue (super glue)
$1.0 at local supermarket
|
2 |
× |
CR2032 batteries
$1.50 for 5 pieces on ebay
|
1 |
× |
Aluminimum foil
$0. Ask mom.
|
1 |
× |
Paper glue or wood glue
$0. You need few and probably have some, somewhere.
|
1 |
× |
Solder wire or solder paste
$0. You have some.
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