About Microcontroller

PIC Data Logger with Delta-Sigma Converter

2011-07-28T02:44:00.000+07:00

The aim of the project is to build a lab-grade data logger with PIC18F45K20 microcontroller and a 20-bit delta-sigma converter. It's named as G5 Data Logger. This new data converter technology using delta-sigma simplifies the design of high resolution data recording device. One of the interesting chip is Linear Technology LTC2400, 24-bit ADC. Another chip of interest is LTC2420, 20-bit ADC. The chip has pin and data output compatible to the...

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Photovoltaic Solar Battery Regulator and Load Controller

2011-07-27T13:28:00.006+07:00

This Solar Battery Regulator project allows solar cell arrays to be connected to either conventional lead-acid, sealed lead-acid, or lithium storage batteries without fear of overcharging. The project can be used to drive two different electrical loads from the batteries at two different charge states to maximise power usage efficiency. How to Use It Applying a load only to the secondary output, you can choose to charge up the batteries to...

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New Generation of Atmel maXTouch

2011-02-17T09:12:00.004+07:00

Atmel has announced the maXTouch E Series of single-chip capacitive touchscreen controllers for touchscreens from 2 to 12 inches. The mXT224E, mXT384E, mXT540E and mXT768E devices offer enhanced analog sensing with a third generation capacitive touch engine and Atmel's advanced AVR® architecture optimized for capacitive sensing. Offering 224 to 768 nodes, the new series enables system designers to select the industry's most advanced single-chip...

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Better Kitchen Timer, PIC16F877

2011-02-08T11:51:00.004+07:00

The project aim is to build a better kitchen timer. It has four independent count-up and count-down timers, display of current value of user-selected timer, start/stop and digit entry controls, and alarm buzzer. The project uses PIC16F877 as main processor. The output part consist of single 7-segment LED display and piezo speaker, while the input part consist of 10-position “BCD” rotary switch, two pushbuttons for set and start/stop, two...

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GPS Auditory Navigation

2010-12-17T06:47:00.005+07:00

This project goal is to build a navigator that allows a user to navigate to a predefined location through the use of auditory guidance. The project is equipped with GPS, digital compass, and MCU ATmega32 to generate sound based on the direction that the user must turn in order to face the correct direction. One example implementation of this project is a self guided tours navigator. How does it work? The module uses GPS and a digital compass...

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Download Free PCB Editor

2010-09-27T09:42:00.004+07:00

FreePCB is a free, open-source PCB editor software run under Microsoft Windows OS. It was designed to be easy to learn and easy to use, yet capable of professional-quality work. It The software features including : 1 to 16 copper layers; Board size up to 60 inches by 60 inches; Uses English or metric units (i.e. mils or mm) for most functions; Design rule checker and Autosave; Footprint libraries courtesy of Ivex Design International, PCB Matrix...

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Arduino Line Following Robot

2010-08-24T13:58:00.001+07:00

The project goal is to build a line follower robot that can follow a dark like, on a light background. It uses an Arduino Duemillanove with the AVR ATMega 328 as main processor. For driving force the project equipped with two Parallax Futaba Continuous Rotation Servos. The robot sensor uses Pololu QTR-6A IR Reflectance Sensor Array. The system powered by 4 rechargeable NiMH Duracell AA Batteries. "It first calibrates itself for 5 seconds....

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Arduino Based RFID Pet Feeder

2010-08-19T13:08:00.004+07:00

The project shows you how to build a RFID pet feeder based on Arduino and RDM630 RF-reader with a self-made circular antenna. The feeder will opens for the pet that wears a collar with an RFID tag. Project feature including : timer-controlled open duration, proximity sensor (Sharp GP2D120) prevents door from closing while the cat is eating, sensors detect whether the door is fully opened/closed, automatic/manual mode switch (on manual it...

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Heater Fan Controller, PIC12F675

2010-07-24T10:42:00.003+07:00

The Heater Fan Controller built around PIC12F675 microcontroller. It reads the (10k) linear potentiometer and generates appropriately timed pulses to control the DC motor running the fan. The extreme low position cuts the power entirely. This device work as a variable speed control for the heater blower in a car. The project is powered from the existing wiring and connects with just 2 wires. Or you can connect it to 12 volt device up to 10...

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Optical String Tuning Tool, AVR AtMega8

2010-06-15T10:57:00.004+07:00

Stimmmopped is AVR ATmega8-based project that will assists you in tuning your string instrument to a given tone. It utilizes the stroboscopic effect to give feedback about the adjustment of your instrument. When the frequency that you chose has tone then the two LEDs on the board blink. Two lines are projected at a fixed position on the string when the string vibrates with the correct frequency. If frequencies don't match, the lines appear to be...

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AVR Radio Frequency Keypad

2010-03-27T08:23:00.006+07:00

The AVR based RF Keypad is remote controller that emits an RF code every time you digit the correct combination on its keyboard. You can use this project to replaces remote controls based on MM53200, UM3750 and UM86409. There are three different combinations for three different actions can be entered at program-time. The keyboard layout also customizable. You can use any matrix up to 4 rows by 4 columns keyboard layout and assigning your own...

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PIC Serial Port Servo Controller

2010-03-09T08:39:00.005+07:00

The PIC Based servo controller is a small project that allow you to control some robotics. The project uses a PIC16F84 microcontroller from Microchip to drive servo motors and digital outputs. It receives commands from a host computer via a standard RS232 serial interface. To control the servos and outputs we need to send commands to the PIC. Some of the commands are single byte commands; some however require two bytes. The first byte...

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MIDI-Controlled Digital Synthesizer

2010-02-17T05:34:00.004+07:00

4bitsynth is 4 bit MIDI-controlled digital synthesizer inspired by the NES. The project is built around Atmel AVR ATMega48 The digital output is put through an R-2R resistor ladder to get the analog waveform. It has three type output : Square wave, Triangle wave and noise. Project Features Detail : Triangle One volume (uses up/down counter)Pitch sweep (up/down, optional looping)Standard pitch bendFine pitch bend Square Three duty cycles:...

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Mini PSU for Breadboard

2010-02-15T07:30:00.015+07:00

The purpose of the project is to create a 5V mini Power Supply Unit for breadboard. The project can be connected to 8-18 DC power source, or 9V battery. During construction, put the components in as tight as you can, while verifying that you can in fact complete the circuit on the underside of the board without adding any wires. The main component in this project is voltage regulator LM 7805. To build this you need: Some electronics skills....

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RF and IR Remote Control

2010-02-08T10:56:00.004+07:00

This PIC based remote control allow you to control up to 8 devices by this easy constructable remote control. The project very flexible you can use it as radio remote control or infrared remote control, depending on the components. Each device output can be configured to be momentary (turned on while you press the button) or latched. Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per...

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AVR Wireless Streaming Radio

2010-01-26T09:27:00.004+07:00

The project allow you streaming your radio broadcast wirelessly over internet. The wifi radio built using an Asus WL-520gu wireless router, an old USB audio headset, AVR ATmega8 and other part. If you are interested to build Wireless Streaming Radio, here is the requirement you need to prepare : Wireless connectivity through existing Wifi network; Audio output (preferably 44kHz, 16 bit stereo); Shoutcast/MP3 streaming audio decode; A display to...

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LED Psychedelic Lights

2010-01-15T09:34:00.005+07:00

This project aim is to reproduce the old style psychedelic lights system that was very popular in the 70s. Being in the "digital era", the technical solutions adopted are quite different from what was characterizing their predecessor system. Old style lamps have been replaced by three high power LEDs; all filters, previously implemented with analog components, have been realized with digital processing techniques; input stages have been replaced...

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AVR Electronic Humidor

2010-01-13T11:33:00.004+07:00

This Humidor project was designed with a Peltier module and Sensirion SHT1X series sensors. The project built to keep cigars in perfect condition by maintain preferred level of moisture and keep the temperature around 70 degrees. The core of system is based on a microcontroller ATMEGA-16 programmed with BASCOM-AVR. The application is broken into two sections the Menu system that allows configuration of the desired humidity and temperature and...

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PIC based Animation Tile Display

2010-01-04T10:40:00.004+07:00

Puzzlemation is an expandable platform of light and animation based on PIC24FJ64GA002. It can be used to create things as diverse as modular animated signs that can be changed by rearranging its tiles, to a uniquely animated puzzle. This project’s display is made of a number of tiles, about 2 inch square with an 8 x 8 array of color LED pixels. Each tile is individually powered and animated, so user can freely pick them up and re-arrange them....

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PIC Mini GPS Logger

2010-01-02T12:00:00.003+07:00

This small PIC based GPS logger used San Jose Navigation FV-M8 GPS module. It allow you to stores coordinates, altitude, and speed into an EEPROM. Then a Delphi based windows software converts EEPROM stored data into .kml (Google Earth format). The system equipped with MCU PIC 16F876 to control FV-M8 GPS module, EEPROM, and interfacing to PC. You can use this project for snowboarding, FPV flights, trial bike and hiking logger. Download : .hex...

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CAN-Servo Controller

2009-12-28T09:58:00.002+07:00

This dsPIC30F4011-based servo (position) controller receives commands via a CAN. If a DC motor does not have a rotary encoder, you can plug a contactless magnetic rotary encoder (CMRE) module into the board (via two SIL connectors) and provide (in a self-contained unit) rotary encoder and position control. Mariano Lizarraga Fernandez, the designer, explains that the board in this project also fully configurable via a CAN network and no...

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Automatic Plant Feeder

2009-12-16T08:31:00.006+07:00

This embedded automatic timed plant feeder system can regularly feed water to your plants for a specified amount of water and also be used as an alarm clock. The project contains the several major blocks: ATmega 323 based CPU system. To display the time and system states, it use 24x2 LCD. A speaker is used for alarming and making sounds. While push buttons used to change the system states by user. A relay is used to control the AC of the water...

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Arduino Door Lock with Keypad

2009-12-02T12:33:00.003+07:00

This is an electronically-controlled dead bolt lock project based on Arduino. It use old CD player second motor that provides a nice linear motion. To use this lock the user need to type in the correct code and presses the # key to open or close the lock. The green LED indicates the door is unlocked. Red indicates locked. They keypad has 12 keys but only 10 wires. Reading the keypad is not as simple as checking to see which of the 12 switches...

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dsPIC MiniTron Amplifier

2009-10-26T07:49:00.000+07:00

The MiniTron is a high end vacuum tube stereo amplifier with efficiency, distortion, and power output enhancements provided by some unique circuitry featuring a dsPIC30F2023 controller IC. The dsPIC is used in this project to create a tracking buck converter whose output voltage tracks the audio signal. The unique SMPS resources in these IC’s do most of the "hard stuff" usually required in an SMPS design, leaving ample processing power available...

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dsPIC 33F128MC706 NUE-PSK Digital Modem

2009-10-24T10:00:00.002+07:00

PSK31 is one of the latest communications modes to capture the interest of hams worldwide. Its inherent ability to dig out low, near-inaudible signals is ideally suited for low power QRP enthusiasts. The PSK31 digital modem engine, however, requires intense DSP processing that is only commonly available in PC sound card. Thus the PSK operator desiring portability for field operation is locked into using a laptop computer as a controller, which...

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