dm projects
Posted on Feb 6, 2014
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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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A wide rage auto turn OFF timer covering 1 minute to 20 hours in three ranges with S1. As soon as...
This lighting-control unit will fade out one lamp while simultaneously increasing the light...
The Hewlett-Packard HSCH-3486 zero-bias Schottky diode is used as the detector. To avoid using...
In this post I will attempt to describe the steps I took to build the arduino based thermostat...
attribution You must attribute the work in the manner specified by the author or licensor (but...
This is a simple form circuit for a 2-station intercom using common 8R mini speakers. The...
Use a voltage to frequency conversion chip along with an analog temperature sensor such as LM335...
This module is a "tribute" module, based on the awesome Steiner-Parker Synth VCF. Those who know...
This inverter circuit can offer a really stable 230V Output Voltage. Frequency of operation is...
The drawback of this architecture is that it disregards the differences between the various...
Video signals can be difficult to display on an oscilloscope. Normal trigger circuits in most...
A power supply project without using a power supply. This can save the expense of buying a...
This analog sequencer was designed with the idea of cooperative play in mind. It can be used as a...
As shown, the two current sources inside the chip (1 foot and 14 feet out) bridge excitation,...
At dawn, the light is irradiated onto the photosensitive resistor RL, it reduces resistance This...
Circuit shown in Figure 3-97. The circuit only two contacts, the circuit is simple, but only...
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