DIY RV Solar Panel Installation
Adding a solar panel to a RV can provide convenient daily battery maintenance and can extend power available while camping away from […]
Author: jhottell
The local policy does not permit you to logon interactively
I experienced this error on a XPMode Microsoft Virtual PC machine after joining it to a domain and trying to log […]
DIY Peltier Candle Powered Electric Generator
Here I show how to create some usable electricity from a candle and a peltier cooler. Materials include a candle, metal plate, […]
What is a Photo Resistor
Photocells, (LDR) Light Dependent Resistor, Photo Resistor, Cadium Sulfide Cell (CdS), all of these names refer to the same thing. Photo Cells […]
How to Install a Fresh Copy of Windows 7
Installing a fresh copy of Windows 7 on a computer is fairly easy, here I show the steps. If you want to […]
AC vs DC Explained and How to Use an Oscilloscope
I decided it would be easier to explain AC and DC current if the user already knew how to use and oscilloscope. […]
Repairing broken LCD screen backlight with LEDs
LCD screen backlights can often go out requiring a new inverter or CFL lamp. Replacement parts can be hard to find or […]
How to Solder, Tips and Tricks,
Here I give some tips on how to solder. Newer post can be found here
DIY Function (Signal) Generator
Here is my homemade function generator that can produce a square, triangle, and sign wave. This is all done with a […]
DIY IO Simulator (AI, AO, DO)
I needed to create an IO simulator for testing a PLC (Programmable Logic Controller). I pieced together a useful tool to do […]
What is a LED
An LED or Light Emitting Diode is a low power semiconductor light source used in lots of electronic devices. LEDs are closeley […]
GLCD Screen Displaying Live Arduino Analogs
I used a ST7565 GLCD (Graphic Liquid Cristal Display) screen to display the live analog readings from an Arduino. Here is the […]
Dawn to Dusk Chicken Door Project
There are many advantages of having an automatic chicken coop door. The door will automatically close at night when the chickens are […]
Unboxing the LM3S811 Evaluation Kit
Here I show what’s included and how to work the LM3s811 kit from Texas Instruments. You can acquire this kit from such […]
How to Replace a Desktop Hard Drive
Replacing a desktop hard drive is not as hard as some may think. Here are some instructions.
DIY RFID Keyless Entry System
A few years ago I built a keyless entry system for my shop using a keypad, now it is time to update […]
Arduino Electronic Speed Control ESC 2 of 2
Here is my second ESC or Electronic Speed Control that I built with an Arduino Duemilanove. You can’t just hook DC up […]
Arduino Electronic Speed Control ESC 1 of 2
Here is my first ESC or Electronic Speed Control that I built with an Arduino Duemilanove. If you don’t already know, the […]
Zune Software Review, ITunes Alternative
The Zune software client is a free media player from Microsoft. Zune is a market place alternative to ITunes with music, videos, […]