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Originally Posted by Brians256
Well, a PIC chip can be a more compact solution, and when engineering time is more expensive than component costs (i.e. prototype), it works quite well. Just get a PIC that has an internal oscillator and you've gotten lots of stuff like comparitors and timers all inside the 8-pin DIP. I just think more in terms of SW solutions than HW discrete because of my background.
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SW also has the advantage of being easier to modify the operation in the future.
You can use a uC with an ADC built in so you can use your pot
Microchip is very good with free samples.
http://samples.microchip.com/
I like the pic16f88 from their mid-range series. I have used it with this boot loader:
http://www.etc.ugal.ro/cchiculita/so...bootloader.htm
I don't think Vector86 knows much about microcontrollers though, since if he did he would not be asking how to do this. It took me a few weeks to read all the manuals, datasheets, application notes, learn the assembly instructions, and figure out how to use mplab and the simulator. Puting something together with descrete components would be faster than learning all that...BUT if you have the time, I suggest you do. Microcontrollers are amazingly useful. After I finished my senior project using some microcontrollers, I felt like I could build anything.
Microchip has TONS of docs on their stuff. Vector86, if you decide to go the uC route I can help you by pointing out the pdfs you should read.
