Here is another example of using a CD4051 multiplexer, or more accurately a pair of CD4051s in parallel. I had lifted much of the core logic and circuits from Dave Jones designs. Again these are old designs offered from a historical perspective. I built this sequencer for a public access facility I was involved with for a while. At the time they o
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nly had a black and white switcher. I built this sequencer in a box along with a Dave Jones color sync generator, a simple oscillator, and a Dave Jones output amp. Though this sequencer has a sync insertion section in the final stage that removes the color burst, using it with an output amplifier, which reinserts color burst, allowed the members of the group to use this as a color switcher for studio shoots, and as a sequencer. A video sequencer is a processor that will sequentially cut between some number of inputs according to a clock. Commercially they are popular in security settings where a single monitor would switch between multiple security cameras. Artists have used them for real time cutting between multiple sources of imagery, either camera sources, or outputs of other modules. You can use a sequencer to create a live wiggle 3D effect with two or more cameras, as well as patch irregular clock signals to move rhythmically between multiple versions of a patch. The sequencer I have in my modular synth, and a similar one built for the Experimental Television Center, had two additional modes to determine switching between between sources. In the binary mode, instead of just a single clock input (oscillator), there are three switches, and jacks, to define a 3 bit binary word that in turn determines which of the eight channels is on. Using the three jacks instead of the switches means you can use three oscillators to...
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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