Hybrid Car – More Fun with Less Gas

Home built generator - Page 3

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Posted by Jimmy Mayfield on February 18, 2010, 1:01 pm
 



Thanks for the link.  I like the adaptability of that one, especially
the rpm limiter and acceleration rate control.  I'll see if I can
locate a dealer when I get home today.

Posted by m II on February 20, 2010, 7:59 pm
 


Jimmy Mayfield wrote:


( I don't know to what accuracy this will maintain the rpm, but the idea
s are great)
====================================================

A nice governor setup using a very inexpensive microcontroller:



For other uses, Temperature, voltage, light, proximity and RPM sensors
are easily connected, as is a computer if you need to see actual numbers
on a terminal. The six dollar chip even has a serial communications port
built in.

The Arduino processor and development board is roughly 30 dollars US. An
USB cable connects it to to the computer for downloading your software
into it. The software is a free download and contains enough samples and
tutorials to more than get you going. A 'Starter kit' is available at a
higher cost for those without an electronics junk box. Extra 28 pin
processors are around 5 to 8 dollars.

Once the processor is programmed, it can be removed from the board and
relocated in your relay/switching cabinet. Then, a new processor may be
programmed for your next project. The chips are said to last for more
than 100 years, depending on ambient temperature. There's a good
possibility one may outlive me.

Many inputs/outputs. The pins can be programmed as either direction.

http://itp.nyu.edu/physcomp/uploads/arduino_pinmap.png

Don't let that scare you. It's fairly easy.

An introduction:



The guy has more hair than I do.

An excellent set of tutorial style projects. Good pictures and extremely
easy to follow. A well done offering. They deserve a compliment.

http://www.ladyada.net/learn/arduino/index.html

More good examples of what the processor can do:

http://todbot.com.s3.amazonaws.com/bionicarduino/bionic_arduino_class1.pdf
http://todbot.com.s3.amazonaws.com/bionicarduino/bionic_arduino_class2.pdf
http://todbot.com.s3.amazonaws.com/bionicarduino/bionic_arduino_class3.pdf
http://todbot.com.s3.amazonaws.com/bionicarduino/bionic_arduino_class4.pdf

Those files are all in the 5 to 9 megabyte range and are found here:

http://todbot.com/blog/bionicarduino/

A compilation of links. A to Z of **sensors**, etc.

http://www.freeduino.org/

The home page for the originators of all this:

http://www.arduino.cc/en/

The best part of this whole thing is the fact that it's open
source. The amount of resource sharing is amazing and should save
someone years of work by preventing repeated re-inventions of the wheel.

I have been playing with one for a week now and am MORE than impressed
with the projects and the community based knowledge.

mike

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Posted by Bob F on February 20, 2010, 8:07 pm
 

m II wrote:

I wonder how many have lasted that long.



Posted by Jim Wilkins on February 21, 2010, 1:27 am
 


The bare chips are small enough to fit into the time machine's
chamber. The ones not incinerated or caked with what we think is ape
drool still worked.

Seriously, high temperatures accelerate the known long-term failure
mechanisms of circuits and sushi. I built a test machine that could
make a transistor live its whole life in 5 minutes by regulating the
internal junction temperature to over 150C.

jsw

Posted by m II on February 21, 2010, 2:33 am
 

Jim Wilkins wrote:


That stuff plays havoc with surface mounted devices.

I barely made it back from Bell Labs circa 1947. I didn't want to go,
but SOMEONE had to give them the germanium junction idea.

The ape drool is another matter and the little side trip to the Zoo is
not a matter for discussion at this time.





mike

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