[OpenTRV-dev] The news !

[Stuart Poulton]

On 21/03/13 08:04, Philip Canavan wrote:
>      I must say I'm astonished that they're all using such huge gearing systems; it certainly explains why they're all the size of a shoe-box! I'm curious if this is down to cost, stupidity or some technical issue with the linear actuators. It seems you could get the electronics, 2 or even 4 AAA batteries ( in the corners) and a linear actuator in far less space.

What do you mean by linear actuator ?

Most TRV valve heads do need quite alot of force, more importantly you 
need to be able to turn the motor off, and not have the valve drift back 
to open.