Archive for September, 2007
 This is an early picture of my discolight effect. Because of the AGC circuit theres no need for potentionmeters for sensitivity adjust. I replaced them with trimmers. Now the microphone is on the control electronics because theres no need to place it outside the box and the possible noises from the surroundings are reduced.
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Lampu Disko dengan Kontrol Bass Berbasis PIC16F84A
Use parts of an old or broken mobile phone? Why not! One useable part of a mobile phone is its LCD, which can be used in many applications where we need data visually presented. Nokia 3310 has a LCD with 84*84 dots, that isn’t that hard to get and can be very useful in DIY (do it yourself) electronics. This page describes a device I designed to test such a display and turned out to be the circuit that I am proud to share with you. Since my motto is �simplicity in construction�, with a few parts you will be able to create a relatively accurate and visually appealing thermometer…
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Pemanfaatan LCD HP Nokia 3310 Sebagai Thermometer Dengan DS18B20
This multimeter was designed to measure output voltage and current in a PSU, where the current sense shunt resistor is connected in series with load at the negative voltage rail. It needs only one supply voltage that can be acquired from main PSU. An additional function of the multimeter is that it can control (switch on and off) an electric fan used to cool the main heatsink. The power threshold at which the fan switches on can be adjusted using One Touch Button Setup..
It is easy to install a couple of infrared emitter and receiver at the entrance of your room and maybe you connect them to the light, but you cannot control the light in this way! You will never know how many person inside and if the room is empty or not. In this system, every thing is under control, because it is smart enough to know how many persons inside; and it can identify the direction of them, so the light will be turned OFF when the room is unoccupied; and ON otherwise! This tutorial will show you how…
Buying a gift for someone special or a loved one can sometimes be difficult or expensive. The flashing heart is the answer. It is easy to build and even the inexperienced hobbyist should be able to build it. The estimated cost for the circuit is $25 if all the parts are purchased new. With The Flashing Heart, you can get your message across in bright lights…
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