[OpenTRV-dev] The news !
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Thu Mar 21 07:49:08 GMT 2013
Very good, thanks.
I'm astonished that this isn't doing end-stop sensing by current draw since the end-stop is not going to be in a fixed position between valve heads; are you sure that the sensor isn't to help get intermediate positions consistently instead (for partially opening the valve to a given %age, having calibrated)?
On 21 Mar 2013, at 07:12, Stuart Poulton wrote:
> As promised, some pictures of my dismantled TRV.
> The drive mechanism, is self contained, and has 2 wires direclty to the motor, and 3 wires connected to a small PCB, thic contains the optoreflector that is used to determine when the end of travel has been reached.
> This drive mechanism does indeed seem to be similar to several others (as you might expect). We've already seen at least one other example of the same mechanism in a different housing, I also understand that the max! unit is a similar derivative.
> It shouldn't be too hard to get an atmega driving the mechanics. From there choose your desired RF platform.
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