
- Like
- Digg
- Del
- Tumblr
- VKontakte
- Flattr
- Buffer
- Love This
- Odnoklassniki
- Meneame
- Blogger
- Amazon
- Yahoo Mail
- Gmail
- AOL
- Newsvine
- HackerNews
- Evernote
- MySpace
- Mail.ru
- Viadeo
- Line
- Comments
- Yummly
- SMS
- Viber
- Telegram
- Subscribe
- Skype
- Facebook Messenger
- Kakao
- LiveJournal
- Yammer
- Edgar
- Fintel
- Mix
- Instapaper
- Copy Link


Xander Hudson, aka Synoptic Labs, posted this cool heart card project to the MAKE Flickr pool. He writes:
This year I gave my sweetheart a LED valentines day card. The LEDs were animated with a pulse harmonic tuned to my own heartbeat. (sappy, yeah I know, but she makes me feel sappy). Incorporates 1 AVR ATTiny45 microcontroller driving 2 constant-current shift registers driving 16 LEDs.
Bill of Materials:
1 AVR ATTiny45 microcontroller
2 STP08DP05TTR 8-bit contsant current shift registers
16 red LED’s (0805 package)
Pyralux flexible circuit board material