3 ms·
A geiger counter next to an ionization smoke detector should have some entropy, though I don't know how high the quality would be. https://www.sparkfun.com/pro
by mtreis86 9y ago
A geiger counter next to an ionization smoke detector should have some entropy, though I don't know how high the quality would be.
https://www.sparkfun.com/products/14209 https://www.sparkfun.com/products/14209
https://www.newegg.com/Product/Product.aspx?Item=0EF-005S-00040&cm_re=ionization_smoke_alarm-_-0EF-005S-00040-_-Product https://www.newegg.com/Product/Product.aspx?Item=0EF-005S-00...