All posts in the 'How to' Category
Posted on 07 May 2008
This article introduce the Waldic (water & air laptop direct input cooler). This device is a dual mode home made laptop cooler. It was made for the purpose of watching movies without being disturbed by the annoying fan. The following pics are mostly self explanatory.[more]
Posted on 07 May 2008
This little project lets you control the speed of Nanoloop 1.3 (might work with other versions also) via the Prophet 64 program for the Commodore 64 computer. It works on the basis of converting a Sync 24 signal to a Nanoloop clock signal. It will react to start/stop signals (Commodore Userport pin E –> 08M leg 4) and a sync 24 clock pulse signal (Commodore Userport pin F –> 08M leg 6).[more]
Posted on 29 Apr 2008
This page shows you to build a lamp that can change color, and can be controlled by a computer. Simple Python and C programs for your PC or Mac are provided that let you program color patterns into the lamp. Implementing the weather forecast and other ideas are then up to you. Web scraping with wget is easy if you understand a scripting language. The whole project should cost under 100 euro, half of which is for the lamp (glass ball, LED module, microcontroller, and odds and ends), and the other half for the flash programmer if you don’t have one. [more]
Posted on 29 Apr 2008
Wayne Eggert writes:This is an Atari cartridge that has been modified with a 24-pin DIP (dual inline package) socket. I originally intended on using this for experimenting with Atari programming and burning some homemade games. After purchasing several desoldering tools, I finally found a worthwhile one at Radio Shack and it cut down considerably on the time invested on taking the old chip out of the Atari cartridge. I then just soldered in the new ZIF (zero insertion force) 24-pin DIP socket and then tested it with the old chip to make sure everything was still in working order. That was the easy part — following soldering the socket in, I cut several traces on the board and soldered a hex inverter in so that I could then use a 2532 eprom with the board. I tested the cartridge several times and was able to get it working with the 2532 eprom relatively easily 
It successfully loaded up a Kaboom! rom I burned onto the eprom just fine.[more]
Posted on 29 Apr 2008
This is a simple Blue LED driver Circuit.It consists of the blue LED, a 1K ohm resistor, and a 9-V battery clip. LEDs have one lead longer than the other. This long lead must be connected to the (+) terminal of the 9-V battery using the clip leads.One lead of the clip should have the 1K ohm resistor soldered to it and the opposite end of the resistor soldered to the LED.[more]