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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:

Combination Lock - Combination lock are nice to enable alarms, but are useful for controlling a wide range of electric devices.  These software keys can open gates, garages, TV sets, telephones, VCRs, well pumps  __ Designed by Projects & Ideas from Nutchip.com

Combination Lock - The Circuit Board is Designed to accept 2 types of Drive transistors.  I Used a 2N3906 in this schematic, but for Higher Current Drive for a Solenoid, You can use Various T0-220 PNP types of transistors.  USE ONLY ONE OR THE OTHER, NOT BOTH.  __ Designed by G.L. Chemelec

Combination lock - Operate your gate or something different by this simple electronic combination lock.  The combination can have a chosen length of numbers or alphabets, and can be changed any time.  The LCD display is optional, the circuit works fine without it.  After entering the correct combination, a relay is operated for the predefined time __ Designed by Peter Jakab

Combination Locks - This circuit uses 4013 D-type bi-stable flip-flops  (D stands for data) .  Each flip-flop has a data input and a clock input.  The voltage applied to the input is transferred to the Q output at the instant when the clock input goes from 0 to 1.   (We say these flip-flops are "edge-triggered".) Switches 1, 2, 3 and 4 are the switches which form the code and any number of "wrong" switches can be connected, in parallel, at the point shown.   __ Designed by © David Hoult

Combination Lock - a digital lock with keypad - enter the correct code to operate a solenoid.  Based around ua3731 __ Contact: P. Townshend - EduTek Ltd

Combination Lock2 - a digital lock with switches.  A nifty circuit i'm chuffed with, based around just 2 logic ics! __ Contact: P. Townshend - EduTek Ltd

Come in Spinner - No, its not our version of Two-Up! Instead, you spin it and it writes messages in thin air.__ SiliconChip

Communication of TRW-24G RF Modules with AT90S2313 microcontroller - Communicate 2 TRW-24G RF modules  (2.4GHz) with AVR micro-controller.  This is more an example assembly code and not an integrated electronic circuit.   __ Designed by © Vassilis Serasidis

Compact 0-80A Automotive Ammeter - The latest adddition to our line-up of PIC-based automotice projects.  Build it and keep tabs on your car's electrical system.__ SiliconChip

Compact Bluetooth enabled Geiger Counter - A Geiger counter you can bring anywhere, and interface with on your Android device.

Compact Fluorescent Lamp Driver - Operates from a 12V DC supply and can drive up to four 9W CFLs at full brightness.  Use it as part of a solar power installation or anywhere you require good lighting without mains power.__ SiliconChip

compact L-match ATU for Portable use - amateur radio construction projects.   __ Designed by Peter Parker

Comparison macro for PIC processors - 03/02/00 EDN-Design Ideas - If you ever get tired of trying to remember the subtleties of the "carry" status bit every time you want to use the subtract instruction to perform a comparison, the macro in Listing 1 can help.  The macro contains all of the nuances, once and forever.  The macro reads like a sentence: branch to target if ram-register is [comparison condition] a literal value.   __ Circuit Design by Dennis Nagal

Complete High Speed, High CMRR Precision Analog Front End for Process Control - The FFT plots were generated using the standard ADC LabVIEW evaluation software tools available from ADI__ Analog Devices from the Lab

Component video to RGB converter - Does your TV have RGB instead of component video inputs? This project lets you get the best possible pictures from your DVD player.__ SiliconChip

Concurrent processing produces fast priority selector - 04/13/00 EDN-Design Ideas - Priority-encoding circuits are common in high-speed digital applications, such as interrupt controllers and task schedulers, for selecting the highest priority set bit of all set bits in a given binary vector.  Typically, the bit  __ Circuit Design by Itamar Elhanany

Connect a Serial LCD Display to Raspberry Pi - Here we connect my serial LCD display circuit to the Raspberry Pi.  This saves the use of GPIO pins for other uses.  The routines are as follows: __ Designed by Lewis Loflin

Connect  RS232 Modem to E-10G - Here is the instructions to build a cable adaptor  to  connect your pocket PC with any external  RS232  modem.  The Pocket PC must have serial  port __ Designed by © Vassilis Serasidis

Connecting a Globe using a PIC16c510 - Scroll to find this circuit #8 -A globe is a device that requires a very high start-up current.  This is something you may not be aware of.  The start-up or warm-up current for a globe is about 6 times its operating current and although this current is drawn for only a very short period of time, it is one of the reasons why a globe does not work in some circuits.  The high start-up current prevented one of our flip-flop circuits working.  The resistance of the leads from the project to the battery was sufficient to prevent the circuit starting-up.  That's why it is important to remember everything we discuss.   __ Contact: Colin Mitchell

Connecting a Servo to a PICAXE - The three simple routines below go further than the PICAXE manual.  The programs are self explanatory. __ Designed by Lewis Loflin

Connecting AT90S2313 with LCD display 2x16 char & 4x4 keypA - D - Connect some 2x16 characters LCD display and 4x4 keypad with AVR microcontroller __ Designed by © Vassilis Serasidis

Connecting LED to PIC Micro I/O Pins - So, you’ve got a great idea for a project using a PICmicro microcontroller and you want to use at least one LED in your project as a power indicator.  Or, maybe, you’ve set out to design a bar-graph voltmeter with eight LEDs, __ Sirus MicroSystems

Connecting Minilogger with Easy-Server V0.9 - Run Easy-Server V0.9 on PC connected to internet gateway enabling remote access the MiniLOGGER.   __ Designed by Wichit Sirichote

Connecting Nokia 3310 LCD to USB using AVR. Part 1. Schematic - What do you do with an old phone, a microcontroller and lots of time? You hook the old phone's LCD screen to the computer USB of course! In this project we're going to communicate with a Nokia 3310 LCD display over USB! How are we going to do that?

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

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