Here is a simple transistor battery charger it can charge batteries up to 12v in series. It has an LED and a few parts. To use it you must decide on a power supply voltage, current limit resistor, and number of cells. First to figure out what voltage to use you must know the total …
Today I began working on my Capacitor box. It’s value is in binary obtain from switches. If you can’t get perfect Capacitance from each switch you can use multiple in parallel or series. For capacitors in series the value is: $$Ct=\frac{1}{\frac{1}{C1}+\frac{1}{C2}}$$ Both equations can have any amount of capacitors the variable Ct is the total …
This do-it-yourself extension cord is simple and straight forward. The reason! Why I built it was to make my cell phone reach the outlet. I just used 2 strains of wires connected to both ends. The one I built has 3 different kinds of wires. This is because I wanted to build it out of …
This app draws text on the top left corner of the screen. It has UTC Time, Uptime, last IRC Channel message in mIRC, Error Of The Day, Memory Load, IP Addresses and Phase Of The Moon. It’s lightweight and open source.
When I went for a host home visit Gary left the charger out in the rain. And now it won’t turn on. All four fuses were ok. The output of the charger was zero. The charger is really expensive because of the voltage output being 35 volt at 20 amps. building it is really hard …
This is a javascript video poker game I took from Cherry Red Rosters Bar in Dwight, IL. The code is a modified one from Paul Griffiths.
Today I got an idea on a proram I could make that would be useful and unqic, so here it is a calculator that lets you add, subtract and multiply dates and times together. It uses Delphi’s TDateTime variable type that the integer part is the days and fraction part is time.
This is a simple Arduino Binary Clock. It comes with a program that generates the script and uploads it to the arduino board. Part of the code isn’t mine only the part that allows you to get the time from the computer and configure the script to use it. You can download the script maker …
Have you ever want to register something but get this annoying verification check: What can I do to prove I’m human an not a robot that doesn’t take hours of clicking? Do not use VPNs or proxies( such as Tor) reCaptcha looks for that because bots want to be sneaky and they use thoses VPN …
Klondike solitaire is the original solitaire game. Rules: Only kings can be moved to empty piles Cards from the seven piles below must be in a sequence and must be in a color changing pattern(red, black, red, black or black, red, black, red) and the sequence must be going downwards(king, queen, jack, 10, 9,…). And …
Circuit Simulator