WOW-UCPRO - PIC Microcontroller Programmer Project

UCPRO - PIC Microcontroller Programmer Project

The Final Product of the design:

I build this MCU programmer to program PIC MCU’s. My own version is almost 100% similar to the programmer sold in the market. The documentation of this project is available in the following link:

http://www.kmitl.ac.th/~kswichit%20/ezpic/index.html

The Printed-circuit layout (Component Placement View):

The Component Placement side layout (Component Placement View):

The near-completion of the circuit (Component Placement View):

Ready-to-use actual PCB layout (download PDF):

-Webscatter/NOV032010

WOW- My Earlier Microntroller Project

My Earlier Microntroller Project

I build a microcontroller project for the general purpose applications. Most of these components are ordered from a supplier in the United States. The microcontroller devices help save cost, time and effort to build electronics projects. Microcontroller a.k.a. MCU is the brain of all smart electronics system. Examples of electrical appliances or electronic systems are microwave oven, washing machine, CD players, MP3 players, cellphones, etc.

In this project, I studied deeply on how to manipulate data and processing of the MCU. Using light-emitting diodes or LEDs, demonstrate the response of it. Commonly used microcontrollers nowadays are PIC from Microchip, ATMEGA from ATMEL, and AVR. There are other electronic manufacturers producing MCUs such as STMicroelectronics, Texas Instruments, Panasonic, Cypress Semiconductor, and many more.

If any project is requiring a short development time, there are lots of MCU development boards available in the market. There are many devboards to choose depending on the application requirements.

From the video shown, an up/down counter is incorporated in the MCU project. I work on this project for my hobby and robotic projects.


-Webscatter/NOV032010

Ref: WOW-- Laser Detector Circuit

Laser Detector Circuit

I had a problem before in dealing with sensing or detecting a laser light. I made a counter project to count the number of persons entering a certain premise. The idea is to install from an entrance a laser transmitter and beamed opposite to the laser sensor. The count commences whenever a laser light is cut by a passerby. I successfully constructed the counter circuit. When i installed the prototype, I discovered a problem: counting jumps randomly. I suspected it is caused by the harmonic responses or glitches of the laser detector from the laser light.

I solved this problem by doing several trial and errors. Finally, the circuit I designed above solved the problem. The circuit consists of photo-detector (in photo-conductive configuration), the transistor driver and the one-shot multivibrator circuit.

The work of the photo-detector circuit is to detect the laser light and reacts when there is an absence of light. When laser is cut, the transistor driver toggles from normally HIGH to momentarily LOW states. This triggers pin 2 of the 555 timer IC that produces an output of ONE-SHOT HIGH logic pulse. The LOGIC HIGH output can be determine by T=1.1RC. This output is sent to Clock Input of the Counter. Every HIGHs or Pulse at the clock in, the counter counts.

This circuit works very well. I designed this last Oct132006. Any Questions message me.

-Webscatter/NOV032010

Keyword- Electronic projects, photo-sensing, laser detector, electronic circuits, multivibrator, counter, electronics, laser sensing