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Microprocessor Circuits
Microprocessors:  #'s - B      C - F      G - K      L - M      N - P      Q - S      T - Z

Last Updated: December 29, 2017 03:15 AM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Phone recorder - How many times have you wished that you recorder your recent telephone conversation? I have, many many times.  So I finally decided to make this happen by using PC and a piece of hardware  (powered from USB) to record audio from phone line to MP3

Phone Screener with Voice - PIC Project  This unit is an upgrade of the previous phone call interceptor.  Instead of using an answering machine to provide the outgoing message and recording functions, it uses the ISD4004  (from Windbond Electronics) .  The ISD4004 records up to 8 minutes of audio.  I use the first several seconds for outgoing message prompts.  The remaining time is used to record up to 30 messages, depending on message length.   __ Designed by Luhan Monat - Mesa Arizona

Phonome: Call, Listen & Switch Devices On & Off - Simple device that lets you call home, switch devices on and off and listen for any sounds.  There's no connection to the phone line.__ SiliconChip

PIC & EEPROM Programmer - In this project we are building a JDM programmer that can handle PIC12, PIC16 and PIC18 family microcontrollers and some popular 24C family EEPROMs.  The programmer also provides ICSP feature that allows In-Circuit Serial Programming.  So if you __ Designed by Radio LocMan

PIC (with source cord) Hexbot robot - The HEXBOT is constructed from 12  (cheap) model airplane servos.  Each leg moves laterally on one servo and vertically on the other.  Conveniently, this type of servo runs on 5 volts.  These servos need only a specific width pulse to position it.  Once it arrives at its target location, it draws very little power  (about 10 ma) .   __ Designed by Luhan Monat-Mesa Arizona

PIC 16 DemoKit3 with Programmer & More - PIC16 DemoKit3 with programmer and displays __ Designed by Thomas Scherrer OZ2CPU

PIC 16f84 Clock - Can be used to turn off devices after specified time

PIC 18 programmer (PIC18F458, PIC18F452, PIC18C252, PIC16C745, PIC18F6620, PIC18F6720) - The SCHAER+ programmer is a programmer for PIC18 family from a PC parallel port  (LPT) .  It is derivated from the SCHAER programmer I used to download my projects in PIC1684.  The SCHAER+ programmer should be improved to use a USB connection, without any external power supply

PIC 3rd Harmonic Meter - The PIC board detects 3rd harmonic distortion of AC power line.   __ Designed by Wichit Sirichote

PIC 5x7 Display - The PIC board detects 3rd harmonic distortion of AC power line.   __ Designed by Prepared Colin Mitchell

PIC based digital voltmeter (DVM) - This project will describe how to make a simple digital voltmeter  (DVM) using a PIC16F688 microcontroller.  The range of this DVM is 0-20V, but you can easily increase or decrease the range of input voltage as your requirements after you understand the voltage scaling method described in this project.  The PIC micro reads the input voltage through one of the 8 analog channels and convert it to a 10-bit digital number using the internal ADC __ Contact: Raj Bhatt & Shawon Shahryiar

PIC Based Motor Controller - On these pages, I will introduce a control circuit for stepper motor.  The software of this project is adapted to Embedded Systems  (Lab13) for 2002 of Cleveland State University.  PIC16F84A __ Designed by Seiichi Inoue

PIC Based RS485 Multiplexer - Recently, I had to design a circuit real quick that transmitted 4 parallel TTL data bits over 350m of twisted pair cable.  I needed to feed in four parallel data bits at one end, and get 4 parallel data bits out the other end, completely transparent to the transmitting and receiving circuits __ Designed by David L. Jones

PIC based touch clock that Demonstrates interfacing a PIC microcontroller to an LCD touch panel - The idea of this project is to use a graphic LCD with a touchscreen and a built-in sprite editor to design your own clock, and shows how to connect a resistive touchscreen directly to a PIC with no additional hardware. __ Designed by Bruno Gavand

PIC based WWVB clock - There are many DIY versions of WWVB clock designs available on the web.  Commercial atomic clocks are inexpensive and widely available, but I wanted to try my hand at designing one to gain insight into WWVB reception and to __ Designed by Bruce Craig

PIC Caller ID - Caller ID circuit displays name and a telephone number of the person that is calling you.  Information is decoded using MT8870 DTMF decoder and PIC16F628 microchip and is displayed on 2x16 LCD.  

PIC Clock - Last summer vacation, I had an opportunity to be in dad's hobby workshop and decided to have a look at my pending projects.   (I am no longer a science student but now in School of Fashion Technology for my BS Degree) I realized that I had a lot of parts in boxes that I ordered and must be utilized!! I decided to complete one more project as all that was to be done was to design a board. __ Designed by Nina Gajjar

PIC Debugging routine reads out binary numbers - 12/07/00 EDN-Design Ideas - The “burn and learn” method of firmware development excludes an in-circuit emulator and a serial port.   With this method, it is common practice to use spare I/O pins on a mC as a debugging aid.  By strategically placing instructions to set and clear these I/O pins in the codePDF contains multiple circuits, scroll to find this circuit __ Circuit Design by Brad Peeters, Theta Engineering Inc, Costa Mesa, CA

PIC Die - Built using a PIC16F84, about 4 hours worth of code and a few bits on a breadboard.  This was the first time I've worked with PIC's so it was a learning exercise.  I started with the 'Hello World' microcontroller equivalent i.  e.  Blinking LED, then tried the 'Knight Rider' sequencing LEDs, and then

PIC diode Tester - This is a simple use of the PIC 16F84 about a diode tester.   __ Designed by Manolis Xenias

PIC DS1820 Thermometer - This application shows how to use the PIC16F877 to control, and interface with the Dallas DS1820 1-Wire™ Digital Thermometer.  If you missed the LCD connection schematic for these experiments,  __ Designed by © Reynolds Electronics

PIC Dual Temperature Meter - Dual PIC Temperature meter that allows to measure temperature in two different locations at the same time.  Never before such a useful and powerful circuit could be built with so little components and yet provide endless possibilities.  This is all possible thanks to the use of PIC16F628 microcontroller and 2x16 character LCD display that act like a small computer which can be customizable thanks to upgradeable hex firmware.  

PIC Freq Meter/ Voltmeter - Measurement of the frequency up to 50MHz Measurement of power supply voltage in the range of 0.0 V, 25.5 V Measurement of the input voltage at two analog inputs, simultaneously displayed as bar graph  (PWR/SWR or S) indicator.  The input sensitivity could be chosen between 0.25V, 0.5V, 1.0V and 2.0V for maximum bar graph indication.  This is a successor of the PIC16C71 4-digit LED f-counter & V-meter.  

PIC Fun & Games - Want to get in to microcontrollers? Here's an easy, low-cost way.__ SiliconChip

PIC In-Circuit Programming Add-on - Does your PIC programmer have provision for in-circuit programming? Some such as Microchip's PICSTART Plus don't but you can add this useful function to your programmer by building a simple adaptor!__ SiliconChip

PIC IR/ RF Remote Control - This is a general purpose remote control project with using programmable PIC microcontrollers  (PIC16F628, PIC16F630, PIC16F684) .  Schematics are shown for using infrared  (IR) or radio  (RF) media.  If you are not familiar with microcontroller programming, you can use fixed encoder and decoder integrated circuits instead.  Well-known such IC-s are Holtek HT-12D, HT-12E and Motorola MC145026, MC145027, MC145028.  

PIC Logic Probe with Pulser - This project is a combinationLogic Probe and Logic Pulser.  It is capable of testing all sorts of digital and microcomputer projects.  You will find it extremely handy when designing a project as the golden rule is totest everything in steps and stages during the design-and-construction process.  If you are not sure how a Logic Probe or Pulser works __ Designed by Prepared Colin Mitchell

PIC Micro LED Projects - Here is a neat PIC Project  that I created using the 16F84 chip and a neat little bi-color LED from Radio Shack.  The LED can be red or green depending on the bias of the diode.  By using two of the PORT B pins, I can control the bias of the LED.  If the LED is on PORT B, Pin 0 and Pin 1, I can set Pin 0 HIGH and Pin 1 LOW, this would make __ Designed by Jason KE4NYV from Roanoke, Virginia

PIC Micro Multiple Servo Motor Interface - Using a modified version of the last program, we can control as many servomotors as we have I/O lines on port B.  In the next listing, we will control two servos in the same manner as we controlled a single servo in the previous program.  The circuit is shown in figure 4  (below) .
 __ Contact: Images SI, Inc

PIC Micro Programmer - Schematic Only __ Designed by Peter Averill

PIC Micro Programmer-MAC, Win98, XP, Vista, DOS, Linux, etc - This programmer requires only a basic terminal program capable of uploading an ascii PIC HEX file.  It does not matter what operating system or computer  (MAC, Win98, XP, Vista, DOS, Linux, etc.) is used to talk to it.   __ Designed by Luhan Monat - Mesa Arizona

PIC micro to ISA Bus interface - Schematic Only

PIC MicroController Servo Motor Interface - In our first program , we will simply sweep the servomotor from CCW to CW and then sweep back.  The program will be kept simple as to demonstrate the priniciples of controlling a servo with a the PIC Basic language.  The schematic can be seen in figure 2  (below) .
 __ Contact: Images SI, Inc

PIC microprocessor drives 20-LED dot- or bar-graph display - 09/01/06 EDN-Design Ideas - Indicator circuit features low cost and minimal component count __ Circuit Design by Noureddine Benabadji, University of Sciences and Technology, Oran, Algeria

PIC NIC Ethernet Controller - PICNIC is a project to add 10BaseT Ethernet controller to PIC17F877, and it can run as an network-enable device.  This project is based on tristate's PICNIC product.  And I just change the temperature sensor's circuits to improve the precision on A/D convert and add another Temp-Sensor channel.  

PIC NiCad Battery Charger - This cheap and easy to build NiCd/NiMH
Battery Charger is suitable for automatically charging a wide range of batteries for many applications.  Proper chargers are usually expensive and cheap chargers supplied with the original equipment often incorrectly charge the cells and dramatically shorten their life __ Designed by Peter Hayles

PIC Pages Tutorial - It is, however, most vital for designers of embedded control products to select the most suitable controller and companion devices.  Embedded control products are found in all market segments: consumer, commercial, PC peripherals, telecommunications  (including personal telecom products) , automotive and industrial.  Most embedded control products must meet special requirements: cost effectiveness, low-power, small-footprint and a high level of system integration.   __ Designed by YO5OFH, Csaba Gajdos

PIC Phone Line Controller v2 - This is a newer version of previous device with a single relay.  This one can have up to 6 relays and 6 sensor-state inputs.  The task was to build a device that connects to the phone line and has a relay as an output switch.  It should also sense if the connected «consumer» is turned-on or off and report to the administrator at the other end of the phone line.  The administrator would then call-in the device, log in with the password, and check the state of «consumer», turn it on or off, change password or some other settings.  

PIC PIN/ Port Extender - This circuit based around 74LS154 will extend PIC / AVR microcontroller output PINs from 4 to up to 16.  It can also be used for extending parallel port output pins.  

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Microprocessors:  #'s - B      C - F      G - K      L - M      N - P      Q - S      T - Z 

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