Hack the pitch shift of the crash and ride by lifting pin 10 of the TC4040 binary counter and insert your own clock in (or just whack it with an additional clock source). This could be any suitable signal you pick up from the TR itself. The other sounds do not have a counter for adress select (like IC 34 and IC35 (BD-midTom and HiTom-Tambo
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urin). Here adresses are selected directly from IC30. Both these IC`s are connected to the same adress lines, so unless you lift/cut traces these sounds will probably be bent together. CE (chip enable) selects witch ROM reacts to the datalines. CE can be used as bend points. Notice the RA3 and RA4 (resistor arrays). These are simple R/2R DAC`s. The inputs can be fed signals that will be treated as digital audio and be converted into audio. You can also do this at the D0-D7 lines between IC35 and IC`s 36-37. Well, it`s a long story, loads could probably be done after some study. If you want to implement your bends inside the TR-707 itself, I suggest to start with a selectrion of data lines. Or go over the top on a breakout box. seperate pitchbend can be done on the other sounds, but some sound are pitchbent together by the same knob. These would be sounds in combined ROM pairs as outlined earlier. It`s clocked with a crystal though, a simple pot here may not be optimal. Maybe Diabolical removed the crystal and made his own clocks. Search for a (CD)40106 clock or oscillator schematic, might do the trick. they sayd: "Because of the digital nature of the 707 a clock modifier is needed to change the sample playback rate. Doing this mod for each drum sound would require individual circuits to be added, however to minimize the part count a 558 Quad 555 can most likely be used. " "On the TR-707 the open and closed hats sounds use...
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....
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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....
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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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