Microprocessor Circuits   Page 7a
Microprocessors:  #'s     A-B     C-G     H-L     M-O     P     Q-S     T-Z
Last Updated on: Friday, March 12, 2010 12:08 PM

Recording and Measurement Microphone - A simple selection of projects for making your own microphones  (added 6/07)

Reducing Noise on Microcomputer Buses - National Semiconductor Application Note   (app note added 2/06)

Reference Design: 13.56 MHz Reader Reference Design for the 13.56 MHz Read/Write Devices - Microchip Application Note Published 20-May-04   (app note added 2/06)

Remote Control Encoder/Decoder with PIC16C620 and PIC12C509 - (electronic circuit added 09/04)

Remote display - Scroll down to find link to circuit drawing and circuit explanation….(circuit / schematic design added 09/06)

REMOTE[RS232] using Easy-Server V0.9 - Experiment the microcontroller with internet server. The Easy-Server provides simple means for connecting microcontroller through a 9600 8n1 serial interfacing. Exemplary circuit using PIC16F84 for REMOTE RS232 and experiment description were included. ….(design added 06/09)

Resistance and Capacitance Meter using a PIC 16C622 - Microchip Application Note Published 26-Aug-97   (app note added 2/06)

RF Remote Controller - Scroll down to find link to circuit drawing and circuit explanation….(circuit / schematic design added 09/06)

RGB LED colour wash light - This PIC based circuit uses Red, Green and Blue high brightness LEDs that are pulse width modulated (PWM) to vary the intensity of each colour LED.  This allows effectively any colour to be generated.  The circuit is designed to fit into a low voltage Halogen light fitting.  A look up table is used to program....   (added 11/05)

RLC circuits match transmission lines to loads - 04/10/97 EDN-Design Ideas / (added 6/06)  

Rolling code generator uses flash microcontroller - 05/03/01 EDN-Design Ideas /(added 2/06) 

Rotating Sprocket Wheel Generator PIC16F84 - (electronic circuit added 7/03)

Routine automates pattern/sequence detection - 05/16/02 EDN Design Ideas  /  (added 1/05)  Sequence detection is a common operation in many communication and security systems. Some good examples are HDLC-flag identification and signature analysis. As the complexity of the system increases, designing circuitry for sequence detection becomes tedious and laborious. Using the .....

Routines directly measure microcontroller-bus clock - (Design Ideas - EDN, 10/25/2007  You can verify the bus frequency of the HC08 SCS08 microcontroller with simple control loops. (electronic design idea added 9/2008)

RS232 Expander - Simple hardware expands COM1 to COM1/1 and COM1/2.  ….(electronic schematic added 06/09)

S-52 Simple Microcontroller Learning Board  - Simple hardware for beginner to learn 8051 microprocontroller, single side pcd with ISP loader designed by Prahlad Purohit from India. ….(circuit design added 06/09)

Safety-Lock with Telecard as Key - This safety-lock can be work with up to 8 different  telecards (empty  or not) as access keys. Each  telecard can be registered or  unregistered from the  system, by press the  corresponding button.….(circuit design added 05/09)

Sample code - for Interfacing Devantech CMPS03 to the Motorola 68HC11. ….(design added 06/09)

saver6 - Latest design night light saver, built with sdcc.  ….(electronic schematic added 06/09)

SCAN90CP02 Design for Test Features - National Semiconductor Application Note   (app note added 2/06)

ScanMate Audio Activated Recorded - (electronic circuit added 7/03)

Scenix and PIC Programmer - (circuit added 7/02)

Secure Learning RKE Systems using Encoders - Microchip Application Note Published 26-Aug-97   (app note added 2/06)