3. March 2015 by Peter
I would try to play a bit around with relays a month ago. So I bought some 5v relays. The OpenCockpits MasterCard supplies 5v outputs, right!? Well, no. It only supplies 3.5 v. So I was not able to use my 5v relays. Lesson learned.
But then I bought a 4 channel relay board from eBay costing just $4. What this board does is that it can work with just 3.3v. It also needs 5v. The OpenCockpits MasterCard supplies both.
On the relay board I have connected my 12v from the power supply and from the relay board all wires for backlighting is installed. Via Prosim I have configured that the relay should flick when there is enough power on the aircraft to power the back lightning.
So there is no backlight of the cockpit until ground power orAPU/ENG BUS is on.
Such a neat feature!
And a shout out to the Prosim737-team. With Prosim all I had to do was to configure what exit on my MasterCard that should be assigned to the predefined light gates in Prosim. Very easy!