UNO equivalents are now under $5 on eBay. So dedicating one to a simple task is not big deal. That said. I don't even like to waste $5. You can buy bare AVR chips with 8-pins in 0.1 pitch. The chips are tiny and cost about $1 each. They work EXACTLY like the UNO and can be programmed with the same sketches. The difference being the fewer pins and reduced memory. But if all you need is to sense the position of a potentiometer and send out pluses 8-pins is more then enough.
You will need the UNO to "boot strap" the little chip and put a boot loader on it. Put after that you have an 8-pin arduino. Two pins are for power (5 volts) and the other 6 are yours.
This is what I use for things like motor controllers. It is basically an Arduino. https://www.mouser.com/ProductDetail/Microchip-Technology-Atmel/ATTINY13A-PU?qs=sGAEpiMZZMvqv2n3s2xjscfa4zIkTHJIMSopc4WsrAo%3d
To use it turn it upside down and super glue it to the inside of a small plastic box and then solder wires directly to the pins. It's a basic "universal computer" for 99 cents. Keep the Uno for your prototype work. Then if 8-pins is enough use the 99 cent part in the final project. They call the building technique where you glue the chips upside down "dead bug construction". It is a reasonable method if you have only 1 or 2 chips.
At 99 cents you can justify lots of uses for them. If would make a nice controller for a power feed system and has enough pins to connect some buttons too, make even a serial LCD display. and you can't beet the price. Use AAA cells for power.
On Wed, Mar 21, 2018 at 3:35 PM, mark.kimball2@frontier.com [7x12minilathe] <7x12minilathe@yahoogroups.com> wrote:
I have an Uno, and have written many applications for it. But using it as a simple pulse generator just offended my KISS approach to things, PLUS I really didn't want to dedicate it for such a task. Everyone has their reasons for doing something a particular way, and that was mine :).
-Mark
Chris Albertson
Redondo Beach, California
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Posted by: Chris Albertson <albertson.chris@gmail.com>
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