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


Last Updated: October 24, 2017 02:55 PM

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

Arduino RC car (Android control via Bluetooth) -  The first part of the project CxemCAR is here.  There are also the source code for Android    (Java Eclipse) and other useful information.
In this article, I will describe the assembly CxemCAR for the Arduino.  We can use any Arduino-compatible board: UNO, Nano, Mega, Leonardo, and even based on STM32 – Arduino DUE.  I used Arduino Nano V3. __ Designed by Anatoliy

Arduino RF power meter that measures-43 dBm to-3 dBm, 1 MHz to 10 GHz using AD8319 & TMP101 -  The circuit mainly consists of an AD8319 from Analog Devices.  Some decoupling capacitors as well as a voltage divider surround it.  The gain of the amplifier has been chosen to be v = 3, in order to map the expected maximum output voltage to a number close to 5 V.  As the temperature compensation looks challenging, we also packed a TMP101 on the bottom layer, close to the logarithmic detector.  On the arduino micro, the ISP header as well as the reset button have been removed to match the small geometry factor of the box. __ Designed by Alexander C. Frank, aka Ajarn Changpuak

Arduino Scalar Network Analyzer, 60 MHz, 80 dB -  This is just a 'proof of principle'    (for physicists) or a 'FUMU'    (for engineers) .  We wanted to verify, if this hack-together of building blocks mayst work together. __ Designed by Alexander C. Frank, aka Ajarn Changpuak

Arduino shield to make a transistor curve tracer -  his is a somehow easier to reproduce version of the Curve Tracer Project.  It has the form-factor of an Arduino UNO    (Leonardo) , using very standard components.  And yes, I saw that there are already similiar projects out there in the endless universe web, but they are all limited to 5V.   __ Designed by Alexander C. Frank, aka Ajarn Changpuak

Arduino UNO based CW Decoder -  If you want to build a cw decoder without using other active components than an atmel 328 - Arduino UNO , then this is sure something for you.   The magic in this code is the tone detection based on the goertzel formular, which means that you just put in the audio on an analog pin and then the processor make some calculations and if there is a tone you will get a magnitude value. __ Designed by vil du i kontakt så kontakt mig på hjh@skovholm.com

Arduino WebRadio player -  An inexpensive WebRadio station player that plays audio streams up-to 64-kbps.   Few components    (as always !) with great sound quality! __ Designed by © Vassilis Serasidis

ARDUINO/Genuino 'Pocket Calculator' Shield -  Designed to make students think about mathematics and how it may be adressed in programming a microcontroller.  Thanks to the arduino community, there already exist libraries for scanning a matrix keypad, as well as handling a MAX7219. __ Designed by Alexander C. Frank, aka Ajarn Changpuak

Arduino: What's All the Fuss About -  The low-cost, open-source Arduino microcontroller development board has taken the hobby-electronics world by storm and is now gaining popularity with experienced engineers as well.  So what?s all the fuss really about? And anyhow, what's with the name "Arduino" and where did it come from? Read on!__ SiliconChip

Arduino-Based FM Receiver -  This project is an FM receiver circuit radio based on Philips TEA5767 digital radio-receiver module.  The radio receiver uses I2C interface with Arduino UNO development board.  The TEA5767 module offers such...__ Electronics Projects for You

Arduino-Based Shadow Alarm -  Shadow alarms are usually used for protection against theft.  A shadow alarm is a device that sounds an alarm when a shadow falls on it.  Described here is a simple circuit...__ Electronics Projects for You

Arduino-Based Tilt Detector -  An accelerometer, which is an electromechanical device, can be used for various applications like tilt detection, obstacle detection, motion inputs, earthquake sensing, etc.  Tilt detection is a simple application of an...__ Electronics Projects for You

Arduino-Compatible I/O Controller -  Want to control something - anything - with commands from your PC? Perhaps turn sprinklers on and off to water your garden? Maybe read some sensors? Or even sequencing Christmas tree lights in time with music?    (OK, so we're getting in early!) Making the computer output the correct information is one thing.  Interfacing that data to control real-word devices is another.  That's what this nifty little relay box is all about.__ SiliconChip

A-stable multivibrator (IC type) -  I will introduce the a-stable multivibrator circuit which used inverter IC.  This is the circuit to make do the blink of LED    (Light Emitting Diode) with the a-stable multivibrator circuit which used inverter IC.   __ Designed by Seiichi Inoue

A-stable multivibrator (TR type) -  I will introduce the a-stable multivibrator circuit which used two transistors.  The a-stable multivibrator is the circuit which repeats the high level    (H) condition and the low level    (L) condition alternately.  ‚hIn case of the transistor type, the voltage    (Vcc) of the power supply __ Designed by Seiichi Inoue

Asynchronous 40-bit TTL CPU -  Microcontroller based electronic circuit __ Designed by Hans Summers

AT89C2051 Digital Thermometer & Clock -  Build your own a laboratory instrument for measuring time and temperature.  The DigiThermo demonstrates the use of 'C' language, a dual-slope converter, LCD interfacing, and digital filtering as well.   __ Designed by Wichit Sirichote

AT89C2051 Line-Follower Robot -  Award Winner from VINGPEAW Competition 2543 by my student, again, Plermjai Inchuay.   __ Designed by Wichit Sirichote

AT89C2051 Night Light Saver -  Build a device that turn on and off a night light automatically.  Save Energy, No EMI, No Battery, Built-in Lamp Fixture, and Peak Shaving.   __ Designed by Wichit Sirichote

AT89C2051 Programmer using Linux Terminal -  This a PIC16F877.  The intention is to make it platform independent by communicating via the serial port and a terminal application.  Although it was primarily designed with Linux users in mind, it should be possible to make it work with Windows and Apple Mac terminal software.  The programmer receives instructions and data from the computer terminal and produces address, data and control signals for programming the target AT89C2051 device.   __ Designed by Wichit Sirichote

AT89c2051 Real Time Controller -  This is my long history the device that controls my home's night light, air-conditioner, etc.  The device is a Miniature Real-time Controller.  The circuit uses only three chips, a 89C2051, DS275   (or MAX232) , and 74LS07 open collector driver.  The scheduler for time on/off of 6-channel output can be made by downloading from PC and saved into onchip RAM.  Each output provides a 20mA sinking suitable for driving a homemade opto-TRIAC or big solid-state relay for heavy load.   __ Designed by Wichit Sirichote

AT89C2051 Serial COMs to LED driver -  This document describes the HSETI PCB.  This PCB is a small simple application for the Atmel AT89C2051 microprocessor - a 20 pin 8051 variant, with FLASH    (reprogrammable) program memory.  The board has just two chips on it, the CPU and a driver/buffer.  __ Airborn Electronics, Australia

AT89c2051/4051 Driving Dot Led -  A basic circuit of the 89C2051 shown here can be made easily using point-to-point soldering with a universal PCB.  Use an ordinary 20-pin socket, do not use a circle-pin socket.  D1 is a small dot LED.  U2 can be either 7805 or 78L05.  U3 is optional for correcting any polarity DC adapter.  Without the 2051 chip __ Designed by Wichit Sirichote

AT89c2051/4051 Easy Downloader -  Build your own a personal writer forprogramming HEX code into Flash based microcontroller AT89C2051    (2k) andAT89C4051    (4k) .  Simple hardware and Easy use software in DOS and Windowversion.  Single-side and double side PCB files included.  sourcecode with sdcc version! __ Designed by Wichit Sirichote

AT89C2051/4051 Scanning 7 Segment Display & KeypA - D -  Since the output buffer ofP1 can sink 20mA    (each output pin, but maximum IOL for all outputs was limited at 80mA) , thus we can use P1 to drive LED display directly.  As shown in the circuit, Two common-anode 7-segment LEDs are connected to P1 with 180 Ohms current limiting resistor.  Each segment of two LED __ Designed by Wichit Sirichote

AT89C4051 as RTC -  Realtime Clock with LCD by Ajay Bhargav from India.   __ Designed by Wichit Sirichote

AT89C4051 as RTC (Updated) -  updated Realtime Clock with LCD by Ajay Bhargav, featuring big size number! __ Designed by Wichit Sirichote

AT89c51 Based DC Motor Controller -  Motion control plays a vital role in industrial automation.  Manufacturing plants in industries like chemical, pharmaceutical, plastic and textile, all require motion control.  And it may be a flat-belt application, flow...__ Electronics Projects for You

AT89c51/52/55 Easy Downloader -  Build your own a personal writer for programming HEX code into Flash based microcontroller AT89C2051   (2k) andAT89C4051   (4k) .  Simple hardware and Easy use software in DOS and Window version.  Single-side and double side PCB files included.   __ Designed by Wichit Sirichote

AT89Sxx Base Board -  This is my second design of the AT89Sxx Base Board.  The board is based on the AT89S51, AT89S52, or AT89S53.  This board uses STK200 for program loading and includes the serial port at the STK200 header.  When I need to program the MCU and need a serial comunication, I do not need to plug and unplug the connector.  Because I am using the USB to Serial ISP programmer __ Designed by Wichit Sirichote

AT89Sxx Cheap & Simple Circuit Learning Board -  Build your own a cheap simple Microcontroller learning board S-52.  The board is based on ATMEL's new ISP chip AT89S51, AT89S52, or AT89S53.  This board can be used by beginners for learning Assembly and C language programming.  Single sided PCB file included.   __ Designed by Tahan Prahara prahara_satria @ yahoo.co.id

AT90S8515 Experimenter Board -  Schematic only, no text included __ Designed by Mike Lambardo

ATM18-DI - P -  Even though you can’t actually damage the microcontroller in the ATM18 project by the configuration of its fuse bits, setting them wrongly can however disable it.  There are actually several different ways of cutting off the branch you’re sitting comfortably on.  must register on this site __ Designed by Published in Elecktor July/Aug, 2010

Atmega fusebit doctor (HVPP) -  Atmega fusebit doctor, as name says it, device for repairing dead Atmega family AVRs by writing wrong fusebits.  Most common mistakes or problems are a wrong clock source    (CKSEL fusebits) , disabled SPI programming    (SPIEN fuse) or disabled reset pin

ATmega16A Based GPS Receiver

Atmega48/88/168 Development Board -  This is versatile development board for AVR microcontrollers ATmega48/88/168.  It is good for testing and debugging embedded programs.  It has many built-in peripheries connected to microcontroller __ Designed by Radio LocMan

ATmega8 & TWI (I2C) sensors / Devices -  Connect TWI    (I2C) sensors to ATmega8    (AVR) microcontroller.  This project connects ATmega8 with 24c32 eeprom, GY26 digital compass LIS302DL accelerometer, DS1307 Real Time Clock and PCT8574T I2C to parallel converter to control a 20x4 LCD.   __ Designed by © Vassilis Serasidis

Atmel 8051 Flash Based Microcontroller Programmer -  The Atmel Flash devices are ideal for developing, since they can be reprogrammed easy and fast.  If you need more code space for your application, particularly for developing 89Cxx projects with C language.  Atmel offers a broad range of microcontrollers based on the 8051 architecture, with on-chip Flash program memory __ Designed by Wichit Sirichote

Atmel 89 Series Device Programmer  -  more chips and easy-use devices programmer!.   __ Designed by Wichit Sirichote

ATMEL 89 Series Flash Microcontroller Programmer Ver 2.0 -  This programmer was designed in view of to be flexible, economical and easy to built, the programmer hardware utilizes the standard TTL series parts and no special components are used.  The programmer is interfaced with the PC parallel port and there is no special requirement for the PC parallel port, so the older computers can also be used with this programmer __ Designed by Wichit Sirichote

Atmel 89C Series Flash Microcontroller Programmer -  This single sided proto board provides an economical solution for developing and testing the projects around Atmel 20 pin series u-controllers    (89Cx051 & AVR) .   __ Designed by Wichit Sirichote

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


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