By 3 levels of your heartbeat, three different messages will be post on your twitter account.
- 30-60: bradycardia now
- 60-90: alive now
- 90-140: tachycardia now
There is, eventually, a 4th state and its message but the message has not been tested, as they said.
As it is an opensource project, all diagrams, parts info and firmware are provided on their project page [J]. The kit is also planned to be sold.
via Mycom Journal [J]