This backup smartphone is so tiny, people won't believe it's real
Get the NanoPhone—a compact, 4G-capable smartphone—for just $99.97 (reg. $199.99) through March 16 at 11:59 p.m.
Hackaday1 年
Card/IO Is A Credit Card-Sized, Open Source ECG Monitor
[Dániel Buga], for instance, designed a compact ECG system the size of a credit card, cleverly dubbed Card/IO, that clearly demonstrates how to implement a single-lead ECG. Although obviously not ...