the timer will generate the basic period (for example 20ms) and with some associated variables will be possible to `fire` an I/O pin to generate the signal. For example, using a 8 bit variable, we can divide the generated frequency in `chunks` of 256 (8 bit = 256), so basically we can have 256 `steps` each one of 0. 078125 ms (20 ms / 256 = 0.
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078125). The start and end positions are loaded immediately in the duty cycle variable, so the servomotor can reach the positions at full speed every time the S2 pushbutton is pressed. The frequency of the command pulse determine how fast the servo "execute" the movement and the "strenght" to retain the position. The default frequency used is 50 Hz because has the right speed and feedback speed. The module is designed to receive a frequency, not a simple on/off signal, so we have to assume a precise frequency as indication of triggering the arm, or ON condition, and the absence of this frequency as OFF condition. After that, knowing the front of the wave was detected, every timer interrupt (the wave below represent the timer) we read the input line and we expect a determined amount of readings high and a determined amount of readings low. In absence of signals, the receiver picks up anyway some "noise", and this noise can sometime have the same frequency of the valid signal, but for short time.
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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