This circuit shows the use of the XCSB servo library to control 4 RC servos. The demo runs on a 16f628 using the internal 4MHz oscilator. It uses 1 push button to select between servos and 2 push buttons to change the selected servos position. A 16x2 character LCD gives operator feed back while controlling the servos. The servo library can handle
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upto 20 servos on a 16f876. The circuit has additional resisters between the PIC and the LCD to allow in-circuit programming of the PIC using a programmer such as the wisp628 available from Connection points are clearly marked. This circuit shows the use of a 3x4 keypad and a 16x2 LCD connected to a 16f628. The 3x4 keypad is a cheap device using 12 switches aranged as a matrix. The interface uses 7 wires and connects directly to the PIC. The XCSB test program keypad-02. bas shows how trivial it is to read the keypad and display key presses on the LCD. A very simple modification would allow the program to accept PIN numbers and activate an electronic lock. A precompiled ready to run executable is available as keypad-02. hex This circuit shows how to read an analog input using the built-in Analog to Digital Convertor (ADC) of the 16f876 The analog input is a 10K linear potentiometer (also know as a pot). The XCSB test program adc-pwm-876-001. bas reads the value of the pot (R6) using the built-in Analog to Digital Convertor (ADC) of the 16f876, displays it on the LCD and uses it as the setting for the PWM generator. The speaker produces a tone corresponding to the value of the pot. Turning the pot changes the tone produced. Simple flashing LED program ready to run on minimal 16f628 circuit with internal oscillator - machine code executable in hex format ready to run (compiled from led-01. bas source) XCSB source file for LED...
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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