Digital Volume Control with DS1669
Posted on Aug 2, 2012
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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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As a keen cyclist I am always looking for ways to be seen at night. I wanted something that was...
To generate regulated ± 5-V supplies from a pair of dry batteries, the circuit of Fig. 1 is...
The AD537 uses its two reference outputs—one fixed at 1 V, the other of which varies with...
This system uses an MM5369 IC to derive a 60-Hz signal from a TV burst crystal (3579 MHz). F8...
By adding a flyback winding to a buck-regulator switching converter (see the figure), wliich is...
Many of you will have an old mobile phone gathering dust. The circuit shown in this article gives...
Based on NE555 this circuit turns on and off the IC output by a momentary switch. In other words...
The circuit below will trickle charge a four cell pack of AA or AAA NiMH batteries. The circuit...
This circuit is sensitive to low frequency electromagnetic radiation and will detect for example...
Power a 12v fan using a darlington so I can control the speed from an Arduino. When I wire up as...
This is a design circuit diagram of a versatile FM transmitter. This circuit doesn`t have a coil....
This simple circuit can be used to activate whatever you like, for example, by connecting it to...
One of the first lessons that an electronics student learns is that an LED provides light from...
This display uses ten LED`s to display a voltage range from 10. 5 to 15 volts. Each LED...
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