PIC based Alarm Clock with Voice Recognition

This project shows you how to build alarm clock with ability to recognizes simple commands to turn off or snooze the alarm clock. By requiring the user to repeat certain phrases to execute specific commands, it help user become more alert when they wake up.

The hardware for the project consisted of the PIC32 microcontroller, microphones, a TFT LCD display, a UART serial cable, a buzzer for the alarm sound, and an external pushbutton. The microphones detects the voice commands from the user which is then amplified and filtered for better sound capture. The TFT display shows the date, current time in military format, and the alarm time in military format.

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PIC Data Logger with Delta-Sigma Converter

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.

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Better Kitchen Timer, PIC16F877

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.

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PIC Serial Port Servo Controller

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.

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RF and IR Remote Control

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 channel.

tag : IR remote control, RF remote control, wireless project control

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LED Psychedelic Lights

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 by one A/D converter and one digitally controlled variable amplifier, that is able to warranty the best signal amplitude for the system.

The project requirements are related to technologies adopted: high power LEDs need to be driven with a constant current; digital filters need a fast DSP engine, to be implemented, and an A/D converter is required to transform an audio signal in a numerical representation. Control data communications between central processing unit and external analog components require to have an SPI on board and, last but not least, the capability to link the system with a PC could be very useful for firmware debugging and for tuning some parameters in real time without needing expensive developing tools. The project is designed by Marco Signorini.

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PIC Mini GPS Logger

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 (16F876), Windows GPS Logger, Schematic (eagle)

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CAN-Servo Controller

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 power-cycle is necessary for any change to take effect. The board has programmed PID controllers with selectable parameter from user. The controller gains, maximum and minimum pwm commands, and device ID are also configurable. All configuration values are stored in the dsPIC's EEPROM so once it is configured at the full contempt of the end-user, no more changes are required.

Download:
Project Documentation and Schematic (zip)

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PIC Wireless Networks Wifi (Hotspot) Detector

This wireless detector project allows you to sense the presence and relative signal strength of wireless hotspots. It is "always on" and communicates the presence and signal strength of an in-range hotspot by way of sequences of pulses - like a heartbeat you can feel. The stronger and faster the "heartbeat", the stronger the wireless signal detected.

This project consists of a microcontroller PIC 12F629, some custom interface electronics, a small vibe motor, and an off-the-shelf Wi-Fi detector from D-Link. The microcontroller periodically "presses" the button on the detector to initiate a reading. The microcontroller "reads" the output from the detector indicator LEDs and uses this as the basis for pulsing out a signal on the vibe motor, which the wearer can feel.

tag : wireless networks, hotspot detector, Wi-Fi strength signal indicator src

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Simple PIC RF/Microwave Frequency Counter

This RF/Microwave Frequency Counter project built based on PIC 16F876A. The basic counter rate is extended to at least 180MHz using two 74Fxx devices. A divide-by-64 prescaler is used for higher frequencies up to at least 4.5GHz. All results of the measurement are shown on an inexpensive, 2x16 alphanumeric LCD module with large characters.

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PIC Cactus LED Display

LEDactus is LED display project that resemble Cactus. It used PIC microcontroller 18F1320 as controller of the LED. LEDactus is immobile and attempts to survive by creating a pleasant display. It can produce more complex and mesmerizing displays. And in the latest generations, a sense of touch is added to allow the LEDactus to interact with passersby.

term : LED display, electronic cactus, PIC project (src)

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PIC LCD Oscilloscope for Spectrum Analyzers

This is simple and inexpensive LCD oscilloscope for spectrum analyzer display. The project use PIC 16F876A as main processor. Although a small LCD screen is not as good as analog oscilloscope, a LCD oscilloscope may be very useful in field measurements, for battery operation or you need different measurement at the same time along with oscilloscope.

The 80dB scale of this LCD oscilloscope can be adjusted with the two trimmers providing the reference voltages to the A/D converter. The operation of the LCD oscilloscope is slightly different between the 80dB mode and the 40dB mode. In the 80dB mode, the trace is always visible and saturates on the bottom or top of screen. In the 40dB mode, the trace runs out of the screen and only the central part of the original 80dB scale is displayed. This project designed by Matjaz Vidmar.

Download
Source code, documentation and schematic

tags : LCD, Oscilloscope, Spectrum Analyzer, PIC, microcontroller, project src

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USB PIC Programmer

If you start learning PIC microcontroller, you need PIC progrmmer to "fill" your PIC with compiled source code. You can build your own PIC programmer like USBPICprog project.

Usbpicprog is an USB in circuit programmer for Microchip PIC processors. The hardware is as simple. The latest version only contains one PIC18F2550, 3 mosfets, and besides the connectors a hand full of passive components.

download
Open source programmer

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PIC Low Cost USB-CAN Distributed Motion Control System

This project presents high performance distributed motion control system at extremely low cost. Rapid prototyping of multi-axis designs is often required during the development of automation equipment. One can use centralized controls with PC motion control cards, external amplifiers, and a tangle of wires, or utilize existing high cost distributed motion control system with RS485, Ethernet, or one of the fieldbuses (DeviceNet, CANOpen, Profibus, etc.). With the use of highly integrated microcontrollers, such as the PIC18FXX8, and power devices like the Allegro A3977/A3959, a very small and inexpensive system was developed.

Download
document and schematic

tag : motion control system, USB, PIC project src

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PICTalker - Low Cost PIC Speech Synthesizer

PICTalker is a low cost allophone-based system for synthesis speech. The system use PIC16F628 microcontroller as main processor. You need a PIC development system and programmer, and Microsoft QBasic to program the microcontroller and EEPROMs to build this poject.

Speech quality is somewhat inferior to that from an SPO256 system. Most people immediately understand most or all of the speech it produces provided sufficient care is taken when constructing words from the component allophones. The speech is significantly easier to understand if the loudspeaker used has poor base response.

Download
Documentation and source code

tag : low cost speech synthesizer, PIC project (src)

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Digital Clock using Classic LED 7 Segment Displays

This is a simple digital clock project using PIC16F887 and classic LED 7-Segment from HP 5082-7414 created by punkky. The displays are bright red and sun light viewable. Each clock consumes about 0.25W (50mA, 5V) when the PIC16F887 operates at 250kHz (display refresh rate is about 61Hz).

Tag: digital clock, 7 segment display, PIC project src

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PIC Debugging Tool

In-Circuit-Debugger is handy and easy PIC debugging tool for PIC programmers that interface to the target PIC placed- board. The device comes with MPLAB plug-ins that provides a full rich set of commands and functions in order to debug your code in real time. The project created by Electrical Engineer Atanasios Melimopoulos.

After hours of using some brands of ICDs, ICD2, etc. on different projects, I faced some hardware situations where the two pin interface ICD <-> PIC becomes annoying and sometimes difficult to work around. Apart from the fact that your target PIC must run at selected clock frequencies that allows the ICD-Uart baudrate multiplier to fit. Also, some pics do not allow the same on-hook commands upon which ICDs are based. There is no electrical isolation between the pic-target board and the USB–Serial PC-GND interface.

Download
In-Circuit-debugger

tag : PIC debugger, PIC programmer tools, PIC project src

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PIC MIDI expander with old ISA-BUS Soundcard

The circuit makes possible to realize a small MIDI expander using an old ISA-BUS soundcard. This microcontroller project based on micro PIC18F4320. Emilio, project designer, has tested on 2 different cards, and it should work for any card ADLIB OPL3 compatible (the I/O address MUST be 0x388).

The software responds to MIDI commands on Channel 1. The sounds are generated by the FM synthesizer built in the soundcard. The power is derived from two low-cost wall transformers (see picture) with variable output, set to 9V (the output is close to 12V).

Download :

Source code and schematic

search term : Midi expander, ISA BUS, Microcontroller PIC project (src)

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PIC16F84 based Hexapod Robot

This Hexapod Robot created by Mike Smyth. It uses 12 R/C servos for actuators. The 6 that raise and lower the legs are Hobbico CS-72 1/4 scale and the 6 that move the legs forward and backward are several brands of standard 1/10 scale servos (all are similar the Futaba S3003). The total robot weight is a little over 5lbs and the payload capacity is around 5lbs additional. The vertical travel of the legs is 1 7/8". Overall length and width is 13" X 11". When crouching, it's 5.5" tall. When standing up there is 3.5" of ground clearance under the body.

There are actually two PIC16F84's on the hexapod. The main processor contains all of the walking code and generates positioning pulses for all 12 servos. Twelve of the 13 I/O lines are used for switch inputs - one on the bottom of each foot and a contact sensor in the front of each leg. The servo pulses are output sequentially on the last I/O line. All the second processor does is de-multiplex the pulses from the main processor and send them to the appropriate servo

tag : Robotic, PIC16F84 Project, Electronic Design, Microcontroller Project (src)

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Minimechadon : PIC16F819 Based Walking Robotic

Minimechadon is a great walking robot design by Mike Smyth. He creates Minimechadon to experiment with learning algorithms for walking. This walking robot weighs 12oz and has 4 degrees-of-freedom.

The sensor array consists of 4 touch sensors on the bottom of each foot, Left and right IR obstacle detection, and 4 CdS photo detectors located on all four sides of the robot. The heart of the control system is a Microchip PIC16F819 micro-controller and a separate 8 channel A-D converter.

The mechanical structure is built from brass tubing (which all the wiring runs through, UHMW (a high density plastic material), and PCBs. Perhaps the most striking aspect of the robot is the use of PCBs to create a 3D structure and mount all of the circuits/electronics.

tag : robotic design,PIC, Microcontroller, Electronic (src)

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