Dew heater

[jorksx]

in config - devices, I have enabled dew heater - standard, I2C 0x10 pin D12
is this D12 pin 12v or 5v when active?
also how is dew heater controlled?
when night mode is active, heater = ON ?
and switches off when allsky goes into daytime mode?

[aaronwmorris]

The pins on the Raspberry Pi are 3.3v. You would not be able to direct drive a dew heater from a Raspberry Pi. You would need either a relay or MOSFET.

In the default mode, the dew heater is turned on at night and off during the day. You can use temperature thresholds if more control is needed.

[jorksx]

Thats why I asked about the control voltage.
I have 5v and 12v relays and they would trigger 5v power to heater itself.
but seems like I have to go mosfet route because of the 3.3 voltage.

Another question.
I didnt see option to overlay heater into image?
on the allsky image there would be text "heater on" "heater off" ?

[aaronwmorris]

Dew Heater status is available as the {dew_heater_status:s} variable in the overlay. This is one of the User Sensor values: https://github.com/aaronwmorris/indi-allsky/wiki/Image-Labels#user-sensors