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How to learn microcontrollers using junk.? Answered

How can I learn microcontrollers by using junk products.I have a VCD and it has a microcontroller but I cannot understand the circuit of this.So please give me some easy guides to learn.I am a beginner and I want to learn microcontrollers but I cannot buy any kits to learn this because I belong to rural area.But I found a junk VCD So I take all useful parts but  the most thing that I want is the microcontroller of the VCD to learn.But the guides I found are not enough to learn this.So  someone help me to learn  microcontrollers by common junk products

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seandogue

3 years ago

An Arduino can be purchased for all of $6 or so via the internet. Living in a rural community is no reason not to be smart. Vast amounts of supporting information on the net. Trying to learn from old stuff (mostly used by professionals with degrees in electronics and programming and hardly common-friendly documentation) is a "noble" ideal, but imo it's a waste of time. Save the ~$6-10 and buy one. they're your best bet for starting into the world of uCs on your own (ie without a degree and supported schooling)

Me? EE +30 years

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kkp7649seandogue

Answer 3 years ago

Please tell me where can I find or buy PIC microcontrollers

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iceng

3 years ago

Please do not expect to learn microcontrollers from products... Because there is a competition between electronic gadgets and thy, those companies are very jealously secretive about their software... You may expect mislabeled parts and no help AT ALL...

On the other hand the people who sell microcontrollers like Micro chip or Parallax or hobby sites want to teach you to be able to use their free samples because eventually some of you will create a software idea that will sell thousands every month.

I learned electronics, then FORTRAN, then Basic, then the SIGNETICS2650 with a 256 by 8 bit word memory board that ran on machine code 1111 and ooo zeros.

It took me 6 mos to understand why the three simple programs worked....

The 8008 took 3 weeks and after that I could learn to program a new uP in 3 or 4 days...

The first space radiation hardened RCA Cosmac CMOS took uP to 5 took days to learn, but that was because it was an 4bit word, an 8bit word and a 16 bit word machine memory.

BTW in those days we burned eprogram into EPROM Erasable Programabe Read Only Memory that would have to be wired to the processor and if it went wrong we would have to to erase it 10 minutes under an X-ray, 30 minutes under a UV lamp or 5 days in the sun then reprogram and try again !!

Some Proms would only program one time and if they had a miss placed bit the game was over.

SIG2650.JPG
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-max-

3 years ago

Before you learn microcontrollers you should learn basic electronics, how to wire series/parallel circuits, ohms law, watts law, what voltage/current/wattage/resistance are, etc. This stuff is fundamental to more advanced electronics like digital microcontroller stuff. Arduino is a great opensource platform with plenty of community support. Consider getting one and building projects. But because a lot of the things on the electrical side are already taken care of for you (such as a 18MHz resonator crystal oscillator for a clock and several voltage regulators) You should learn about those too.

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Datasheets can normally be found if you google the part numbers you see printed on chips. The datasheet is basically the manual on how to use the component. It may contain example circuits, all sorts of parameters (usually the more important ones being close to the top) and the pinouts so you know what connects where.