This analog sequencer was designed with the idea of cooperative play in mind. It can be used as a standalone instrument, or linked together with other sequencers running on the same clock speed. Mark Kleback and I were working separately working on sequencers based on Nicholis Collin`s schematics in his Handmade Electronic Music. We were playing m
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usic together and we wanted to figure out a way to sync up out sequencers together simply. Very similar to what MIDI does for people`s instruments, but we wanted something much simplier and easier to build and implement. So we designed this new circuit to allow multiple sequencers to be tied together or run off a master clock. The circuit is designed to have two different timing circuits, internal and external. The internal clock is a controllable 555 timer circuit. With a switch you can change to an external clock that can be anything from other 10 step sequencers or a master clock programmed through a microcontroller. The clock pulses the CD4017 decade counter which you can control with a ten step rotary switch. The length of the sequence can vary between 1 and 10 steps. Each step is shown visually using an LED and sent through a potentiometer to vary the voltages coming out (or rather to change the note in the sequence). There is also an on off switch for each not if you want to skip notes in the sequence. Mark and I also added a CV output jack at the ouput of the decade counter for the user to control other instruments. Like the Realistic in the video above. However if you choose not to control an external instrument, the output of the CD4017 is routed through CD4046 Phase-Lock Loop to create audible tones. The range of frequencies is dependent on a few resistor/capacitor pairing off the CD4046 which the user can change...
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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