Latest from David Scheltema


Listening to Signals

Listening to Signals

01/01/2015

Build an inexpensive homemade o'scope for visualizing signals on your desktop OS.

Smart Garage with Spark Core

Smart Garage with Spark Core

12/31/2014

James wanted a way to monitor the status of his garage door without having to actually look at the door....

Unlocking Circuits the Maker Way

Unlocking Circuits the Maker Way

12/18/2014

Use simple woodworking skills and hardware-store cleverness to create a three-dial safe that can only be opened with your secret...

Learn-to-Solder Rocket Ship Pin

Learn-to-Solder Rocket Ship Pin

11/14/2014

Learn the basics of soldering by creating your very own blinking LED rocket ship pin. A favorite Maker Faire activity, soldering is...

East Bay Mini Maker Faire

East Bay Mini Maker Faire

10/20/2014

Last Sunday, the Park Day School and Studio One Art Center hosted the East Bay Mini Maker Faire. With over...

Crypto Currency Tracker

Crypto Currency Tracker

08/28/2014

Use the Raspberry Pi and build a real-time tracker to display the values of your favorite digital currencies. Monitor Bitcoin,...

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