Author: dapj

Grathio Labs of Steve Hoefer

Steve Hoefer, the main brain behind Grathio Labs. A freelance problem solver and writer. Active in the Open Source software and hardware. The Secret Knock Detecting Lock unlocks your door when it detects the...

Homo sapiens to Homo Ludens

A long, long time ago a bright ape figured out that by climbing down from the trees he could more easily master his life, and that of others……Homo sapiens wanted something else, and better....

Switching regulator for 3.3V

Circuits with 3.3 volts: For small currents, a voltage regulator is sufficient. Greater efficiency can be achieved with a step-down switching regulator. This circuit proposal is loaded with good one ampere.

David Bray 1-Wire Barometer

This article describes details for constructing a 1-Wire Barometer which will work on a Dallas Semiconductor Corporation 1-Wire network. This design differs from the popular Version 1.1a in that it has more than twice...