AO Out extension board

[zorro_66]

What is the contact in the yellow square

And please can not you arrange some documentation
so all do not have to ask if everything

Sorry for my bad English
blame Google translate

[tomas_hora]

Those are the 12 PWM outputs. There is also a schematic how to connect it all togetger below

The IN connectors should be connected to 5-50V DC, the LED is connected as openn drain - https://www.maximintegrated.com/en/glossary/definitions.mvp/term/Open-drain/gpk/1174

This table shows the description of the pin header.