Programming an 8 digit 7-segment display, the easy way, using a Max7219
In today’s blog, I am going to show you the easy way to interface 7-segment displays – Using the MAX7219. Each 7219 chip can be used »
Great projects for your spare Raspberry Pi - Part 2 - Searching for Aliens
This is the second project in my series Great Projects for your Spare Raspberry Pi - Serving a Community. The first project in the series, Contributing »
Great projects for your spare Raspberry Pi Part 1 - Flightradar24 - Live Worldwide Aircraft Tracking
What to do with a spare RasPi? At the last count, I had eight Raspberry Pis at home. I bought my first one a few weeks »
Light Your Menorah (Hanukiyya) or Christmas Tree Remotely from your Phone
A word of warning Before I begin, a word to this blog's regular readers. This post will likely be read by people with little background in »
Programming a 7-segment Display, using just Arduino digital pins (the hard way)
Summary The purpose of this project is to build a countdown timer comprised of two 7-segment displays. Several interesting challenges are solved or resolved: How to »
The Magic Platform - DIY assisted crawling device for child with developmental disabilities
This post is different from anything we’ve published before. It’s an explanation of how we created one of our most ambitious projects to date »
Install the Arduino IDE (with ESP8266 support) on a Raspberry Pi
A couple of weeks ago I set up a new bench in my workshop. It was a great new space, but each time I wanted to »
Quick and Easy Hack of the ESP8266-01 USB Adapter
We all know how fidgety it is to flash the ESP: 3.3 volts only, smoothing capacitors, GND-GPIO 0, VCC to CH_PD. Wouldn't it be »
How to Protect a Rasperry Pi from a Powered USB Hub
As most readers of this blog probably know, there's a limit to how much current you can pass through a Raspberry Pi. When used with a »
Geekcon 2016 - Scorbot Learns to Draw
About two years ago I got Scorbot from a junk yard. One of the first posts I wrote was dealing with Scorbot first moves. At first »