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DIY Sanguino

Posted August 16, 2017 by Chris

"A few days later it was in my hands. Of course I wasn’t the first person to think of this. This kind of board goes by the name Sanguino and more info about them can be found here: http://sanguino.cc/start. That website has all the info you need to build your own, but I’ll show you how I did it with basic, cheap components."

Maglite 18650 Conversion

Posted August 13, 2017 by Chris

"The Maglite host body accepts two D-Cell batteries which are a bit shorter in length than an 18650 cell, unfortunately in my attempt to rid my home of non-rechargeable batteries I can not find a D-Cell battery for an image comparison. In order to accomplish this mod it would be necessary to accommodate the extra length from using two 18650 batteries."

DIY Minion Robot

Posted August 10, 2017 by Chris

"After making some sketches and the templates, started the work, which took me only one afternoon to make the body and one more afternoon to the electronics."

Wally Robot

Posted August 7, 2017 by Chris

"Wally is a wall following robot that uses ultrasonic (ping) sensors to detect objects in its path, much like a bat uses SONAR to “see” things around it. Ultrasonic sensors are like high-frequency microphone/speakers."

Wireless Data Logging For Temperature And Humidity Sensing

Posted August 4, 2017 by Chris

"Monitoring and controlling relative humidity is important for humans health. Too low or too high humidity feels uncomfortable, but most importantly high moisture is a factor for growing mold in your home, which could be health threatening. I will not go into details on how to control humidity. Instead I’ll describe what motivated me to design and create my own temperature and humidity sensor which reports its readings every minute to a central Linux server."

Open Source PLC

Posted August 1, 2017 by Chris

"The PLC is a general-purpose controller with a wide variety of applications. It is useful to the engineer, technician, student and hobbyist. All the source files for the small brick OSPLC are provided, including schematic diagrams so that you can build this project yourself or modify it."

Digital Temperature Sensing

Posted July 29, 2017 by Chris

"This circuit is simply a digital thermometer. I use a Microchip PIC Microcontroller to communicate to a Dallas DS18B20 Digital Temperature Sensor, interpret the data, and display the temperature on a multi 7 segment LED display."

Raspberry Pi Serial Breakout Board

Posted July 26, 2017 by Chris

"A simple single-sided board that connects a RS-232 serial port to the Raspberry PI and breaks out some of the PI’s pins for experimentation. The interface board was designed to be simple and used for initial experimentation. It can be built on a single-sided PCB using home-made PCB fabrication methods."

DIY Mini Tesla Coil

Posted July 23, 2017 by Chris

"How to make a mini Tesla coil ! In today’s video I’ll show you a great idea, a long awaited video about how to make a Tesla coil at the minimal expenses. It’s very easily to make a Tesla coil at home."

Raspberry Pi Defcon Sign

Posted July 20, 2017 by Chris

"DEFCON or Defense Condition is an alert system utilized by the United States Military and indicates a level of alert ranging from DEFCON 5 (least severe) to DEFCON 1 (most severe). The goal of this project is to create a Defcon sign in the same manner that is driven by simple commands sent to a particular twitter handle using a Raspberry Pi as the controller."