Reason, Liberty, & Culture

Arduino Basic Diagram.

List of Electronic Projects by Lewis Loflin

I've been a part-time adjunct professor at a local community college teaching electricity and electronics. My electronics website reflects what I've taught or been asked to look into by visitors. I have 40 years experience in electronics from vacuum tubes to modern solid state and industrial controls. In college I had a year each of physics, chemistry, and biology along with C, C++. Pascal, and assembly.

I taught myself the coding for Arduino, PICAXE, Raspberry Pi, Microchip PIC, Debian and Slackware Linux, CSS etc which I approach in a way to give my students a basis for their own projects. Every page on this website was hand-coded by me. My education philosophy is learn the basics, find working examples, then use what works as a foundation for further learning. Modify and try new ideas. I'd say my job title would be applied technologist.

Electronics Bio

New June 1 2016:



New May 1, 2016:

YouTube Videos:
MCP4725 12-Bit DAC Interface to Raspberry Pi
ADS1115 4-Channel ADC Uses I2C with Raspberry Pi
Interface I2C LCD to Raspberry Pi in C
Pulse-Width-Modulation with Raspberry Pi
Using Geany Text editor C Programming
Raspberry Pi Blink Demo
MAX6675 Raspberry Pi Demo

New electronics pages Feb. 2016:



PDF files and spec sheets for www.bristolwatch.com projects

Listed below are pages on power supplies one can build and test. At minimum go buy a digital volt-ohm meter. They are cheap and can be found everywhere from Radio Shack to Lowes. In the You tube video I show how to use what I call a load lamp. This is simply a light bulb wired in series with the project. If one connects something wrong or shorts anything out, the lamp will light instead of blowing fuses or burning things out. It will also give one a quick visual indication something is wrong in order to disconnect the power.

Understand some terms right now: a short is an unwanted connection, while an open is a broken connection. For example a blown fuse is called an open because the electrical path is broken; a short is an unwanted connection such as connecting the positive post to the negative post on a car battery and watching it explode. Yes even low voltage circuits can explode.

You Tube Videos

The next groups of links below go to specific electronic/electrical devices on how to use and test them.