Anybody knows about microcontrollers?

Question

I am using a PIC16F877A microcontroller for doing a project on temperature measurement and controlling. Now we decided to use a thermocouple to measure the temperature and feed it to the ADC input of the microcontroller. But i am unable to connect the thermocouple to the microcontroller i.e. i don't knw where to connect the 3 terminals of the thermocouple in the microcontroller. We are using a VPUT 01 trainer for the purpose

I wanted to know how r the wires of the thermocouple physically connected to the microcontroller. there are i/o ports which r provided.

I wanted to know how r the wires of the thermocouple physically connected to the microcontroller. there are i/o ports which r provided.

Answer 1

A microcontroller (or MCU) is a computer-on-a-chip used to control electronic devices. It is a type of microprocessor emphasizing self-sufficiency and cost-effectiveness, in contrast to a general-purpose microprocessor (the kind used in a PC). A typical microcontroller contains all the memory and interfaces needed for a simple application, whereas a general purpose microprocessor requires additional chips to provide these functions. A microcontroller is a single integrated circuit.

PICAXE range of controllers from Revolution Education Limited[1] are based upon Microchip PICmicro's programmed with a BASIC interpreter. Using internal EEPROM or Flash to store the user's program they deliver a single-chip solution and are quite inexpensive. A PICAXE programmer is simply a serial plug plus two resistors. Complete development software, comprehensive documentation and application notes are all available free of charge.

The BASIC-like programming language is almost identical to that used by Parallax's Basic Stamp 1 (BS1) but has been enhanced to support on-chip hardware and additional functionality. In common with the BS1 programming language, the PICAXE has support only for a limited number of variables, but allows access to internal RAM for storage which helps overcome that limitation.

The 5.0.X versions of the Visual IDE ( the Programming Editor ) introduced 'enhanced compilers' which support block-structured programming constructs plus conditional compilation and other directives.

Initially targeted at the UK educational sector, use of the PICAXE has spread to hobbyists, semi-professionals and it can also be found inside commercial products. With its user base in many countries, the PICAXE has steadily gained a good international reputation.

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http://www.dreamislife.com/arm/

Answer 2

You will certainly need the manuals for your microcontroller, so as to know which pins are allocated for which functions. The manual will also give you more specific data on what the microcontroller is capapble of, what input levels are acceptable, and possibly the assembly language.

One word of advice. Watch your potentials coming into your ADC off of your thermocouple, in that too high of levels could damage your microcontroller. You may have to consider using a clipping circuit if your ranges run too high.

BTW, whoever gave me the thumbs down, you can lick my balls.

Answer 3

Observe other similar items and see how they go together.

Write to the manufacturer and ask for connection diagram. Usually they get plug in and the wires get attached to the plug or they get plugged in a circuit board.

Some get glued with special conductive glues.

Answer 4

Go to the chip manufacturers site. I've found good resources at Phillips.com,,;-)=

Answer 5

I have no Idea.