The setting of delay timing of program will depend on CPU speed. You can use the timing delay on C+ library so you can set the standard timing at any computer but the minimun time delay can achieved was 1ms. It can be improved at less than milisecond by certain timing technic. You can learn more timing technic with document : pctim003. - a lot
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of good information about the parallel port, serial com port and other PC peripheral interfacing. - -pc interfecing and a lot of programming tutorial, source code and information This cooler had been tested and working well but not test on any CPU yet. The PWM controller and peltier element can buy from The prices for peltier element between US12. 5 to US15 for each unit (power from 60W to 80W). This pelteir cooler not only use for cooling the CPU, it is also can be use as portable battery-operated cold reservoir, laser diode cooler, liquid cooling and so on. Two 1. 8 degree stepper motor used for this project. However the resolution can be increased to 0. 9 degree or 400 step per resolution by half step driving method. The stepper motor driver using programmed pic16f84 or pic16f627/8 MCU as controller chip. Click here stepper controller to shown the circuit diagram. For more detail of this circuit, go to the pic microcontroller page pic project. A few photo of plotter shown as bellow The software used to test the X-Y motion (writte under Delphi 5) can download here: X-Y motion test. The mechanical design of center supporting shaft to obtaining smooth movement without needed of carefully aligment. Two end of one movement axis was supported by bearing. You can attach the small power CO2 laser to this X-Y table as laser cutting or marking system. You can also attach a pen to the X-Y table as simple plotter system. The...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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