> located?
>
> Sorry, I should have been more detailed....
>
> I want to run the temp probe into the A/D inputs on a TS7xxx board,
> and then have the board control the heater.
>
> The reason for this is that I also want the ability to set up a webcam
> and multiple control channels, and I want web-based programmability.
>
> So I'm really looking for a 120VAC dimmer that can be run by a TS7200.
> All I've been able to find are PIC based designs, which I could
> probably adapt, but I am not a hardware person...
Dimming an AC load requires triggering a Triac pre/post the 50Hz/60Hz zero
crossing point. It would be best to offload this to a micro. Then
communicating to micro from TS7200 via SSP/SPI.
The EP9301 doesn't have any PWM peripherals, so the output would have to
be bit banged. Which means you would need as minimum to run something
like RTAI.
You can fit nine PWM channels, eight Analog to Digital Inputs, SSP/SPI,
Zero Cross input, etc. on a NXP LPC2101. Cost on this micro for quantity
one is $3.15.
Joel
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