In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote:

1. Yes. The SLEEP command on the SX puts it in low power mode. It can be waked by a reset or using an external interrupt on Port B. Powering down external circuitry in software is doable, but takes some more work (e.g. you can tie an output pin of the SX to a transistor, which in turn provides power to external circuitry so that the SX can turn things on and off -- do a search at the forums, there are a number of examples floating around)

2. Yes. You could use the comparator on RA to do this.

Goto [url]http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/ProductID/399/List/1/Default.aspx?SortField=ProductName,ProductName[/url]

It's the protoboard, but schematic is essentially the same. You'll see a link there to download schematic and manual.

Happy Thanksgiving! Time to eat pie!

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