Dew strap + controller

[groberts]

For years using my rig near to the house and just adding a dew shield, I manage to avoid dew 99.9% of the time. 

However, I'm now intending to venture down the garden with a new AM5 + ASIair set-up to get a view of the north sky (my house is otherwise in the way!) and that will mean much more dew.  I can of course plug the dew strap directly into the ASIair plus but would like to have some control over the heat with a controller but they generally seem to require a dedicated DC power supply, which is just more 'stuff' and would prefer to avoid.

Can anybody recommend a dew controller that would work directly with the ASIair plus?

Graham    

[StevieDvd]

On the ASIAir (apart from the first version) the power ports can be set to control the dew strap power style, they just need a 2.1mm connection instead of a phono plug. I don't believe there is a non ZWO controller that can be controlled from the ASIAir.

 

 

[groberts]

7 minutes ago, StevieDvd said:

On the ASIAir (apart from the first version) the power ports can be set to control the dew strap power style, they just need a 2.1mm connection instead of a phono plug. I don't believe there is a non ZWO controller that can be controlled from the ASIAir.

 

 

Thanks, I thought about that - so you just vary the amp setting via the ASIair?  I wonder oif there's a maxium limit?

Graham

[StevieDvd]

A quick google found this page which may be of help. The ports when used for Dew straps are PWM and set as a percentage of voltage instead of just on/off.