Microprocessor Circuits   Page 5a
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Last Updated on: Friday, March 12, 2010 12:08 PM

Message Wand - The message wand is a good PIC introduction as it is a simple project yet illustrates many aspects of the PIC usage. Used at night, the wand is swung around above the head, and to onlookers spells out a short message in the air using flashing LEDs. It could also be used with a handle and spun round like a traditional soccer rattle (can you still get those?) though great care must be taken if you do this....(circuit added 04/04/04)

Micro based PIR to IR remote converter - (diagram added 05/06/07)

Micro SMDxt Wafer Level Chip Scale Package - National Semiconductor Application Note   (app note added 2/06)

Microchip Development Kit Sample Format for the MCRF355/360 Devices - Microchip Application Note Published 19-Sep-03   (app note added 2/06)

Microchip PIC ICD in-circuit debugger - (schematic / circuit design added 08/05)

Microchip PIC ICSP implementation - (electronic circuit added 7/03)

Microchip PIC14 - Engineers of my generation in the UK will remember the Science of Cambridge Mk14. Intended to be Sir Clive Sinclair’s first home computer kit for the general public, it served to train a generation of electronics engineers in how to program microprocessors. The Mk14 was based on, and virtually identical to, the ‘Introkit’ that was available in America at around the same time. It had a 512 byte monitor ROM, 256 bytes of RAM, an eight or nine digit LED display with bubble magnifiers, and a notoriously bad twenty key keyboard.....(added 04/04/04)

Microchip Stack for the ZigBee Protocol - Microchip Application Note Published 5-May-05   (app note added 2/06)

MicroController Becomes multifunctional - 10/25/01 EDN Design Ideas  /  (added 1/05)  A microcontroller, by default, can execute only one program at a time. What do you do if, in a given project, you need to perform more than one operation at a time? Add more microcontrollers to the design? In certain cases it's unnecessary. Consider a real-life situation (Figure 1). The microcontroller constantly generates....

Microcontroller controls analog phase shifter - (Design Ideas - EDN, 06/12/2008)  By using a digital potentiometer in a phase-shift circuit, a microcontroller can precisely control phase shift. (electronic design idea added 9/2008) 

Microcontroller delivers voltage-multiplied dc power - 09/06/08/08  EDN Design Ideas  /  (added 09/06)  Use the microcontroller's comparator and PWM blocks to form a simple inductor-based boost converter.

Microcontroller detects pulses - (Design Ideas - EDN, 7/24/2008  A microcontroller detects output pulses in a device under test. (electronic design idea added 9/2008)

MicroController directs supply sequencing and Control - 05/29/03 EDN Design Ideas  /  (added 1/05)  With the proliferation of dual-voltage architectures and multiprocessor boards, even simple applications can require several processor voltage rails. With each processor having its own power-up and -down requirements, power-rail sequencing and control can become a ......

MicroController discerns addresses in RS 485 systems - 11/08/01 EDN Design Ideas  /  (added 1/05)  One of the many benefits of using the RS-485 data-interface system, unlike the RS-232 system, is its ability to implement multidrop networks. Such networks usually carry 9-bit data words, in which the ninth (parity) bit identifies each word as address ...

Microcontroller displays multiple chart or oscilloscope timing ticks - (Design Ideas - EDN, 5/1/2008  A crystal controlled microcontroller generates precise timing ticks. (electronic design idea added 06/07/08)

Microcontroller drives 20 LEDs - (Video Design Ideas- EDN, 9/27/2007  Dhananjay V Gadre of the Netaji Subhas Institute of Technology in New Delhi, India, details and demonstrates the use of "Charlieplexing" to drive 20 LEDs using six available I/O pins on an 8-pin microcontroller. (electronic design idea added 9/2008)

Microcontroller drives H bridge to power a permanent-magnet dc motor - (Design Ideas - EDN, 03/15/2007)  Improved H-bridge requires only two driver signals. (electronic design idea added4/07) 

Microcontroller drives LCD with just one wire - (Design Ideas - EDN, 12/3/2007  A Microchip PIC10F family microcontroller sparks an HD44780 LCD using a single I/O pin. (electronic design idea added 9/2008)