Introduction Real world applications often call for controlling small to medium sized DC motors from digital circuits. For smaller motors it is usually economically infeasible to buy a commercial speed controller as the cost of the controller will far outstrip the cost of the motor itself. The PIC’s high speed, low cost, and low power […]
Introduction The purpose of this lab is to build a machine that alleviates the process of distributing cards in gameplay with a given set of players in random order. Our team has successfully built a prototype of such a device that takes in a deck of cards and randomly distributes them among players and deposits
Introduction In this project, we implemented a two-degree-of-freedom ball balancing platform using a resistive touchscreen, two servo motors, and PID control. We used a PIC32 microcontroller to read position data from the touchscreen and drive the servos, adjusting the platform’s angle. We tuned the system to balance a 1 inch diameter steel ball using a
A Two-Degree-Of-Freedom Ball Balancing PID Controller Read More »
Background DDS stands for Direct-Digital Synthesis. This synthesizer is simply a circuit that can create a sine- wave signal from a reference crystal and a programable frequency-register. All this circuit needs is a reference oscillator (crystal) and some filter. See fig above: A crystal oscillator (50MHz in my case) is connected to the input (Clock
Direct Digital Synthesis (DDS) using PIC16F84 microcontroller Read More »
DDS (Direct Digital Synthesized) VFO seems to be very popular among amateurs in last few years, mainly thanks to cheap and easy available single-chip DDS synthesizers. There are plenty of different amateur designs, some of them also available in a KIT form. They mostly use Analog Devices AD9850 or AD7008 single-chip DDS system to generate
Introduction The aim of this project was to produce a portable ECG monitor that displays the ECG signal of an Einthoven triangle configuration of electrodes (3 leads). The motivation of this project comes from the pervasiveness of cardiac problems in the world, which cause the highest number of death, as well as the relatively uncommon
A simple rotating display. Just spin and enjoy. While the “Air display” is rotating, it writes the message on the air. Because the “persistence of the vision”, you will be able to read the message. Here is the circuit: Download the HEX file HEREProgram the PIC with this HEX file. (Use right-click and “Save as”)
Power Pic RGB with voltage controlis a circuit that generates many colors using a RGB LED and those colors can be changed using two independent voltages, supplied by some external device, in order to select the color (Hue) and its intensity (Value)! The idea originally came from Artur Grycuk who wanted to interface his Theremin Music
Power Pic RGB with voltage control using PIC12F675 Read More »
Quick Key Adapter, 10 Button HID Keyboard This Instructable covers creating a USB connected Human Interface Device Keyboard that has 10 button inputs which are mapped to key combinations in the firmware. Key combinations can be quickly accessed without using the keyboard which may be inconvenient to use. Such as with a MAME or similar machine where the keyboard may be stored or inaccessible or certain
Quick Key Adapter, 10 Button HID Keyboard using PIC18F14K50 Read More »
Augmenting a Microcontroller Microcontrollers (MCUs) are fantastic little ICs that give an extra element of versatility to your electronics, robotics or other project. But they’re really not much use on their own. To function, all MCUs need some sort of support components, and a board to live on — one example of course being the
