Daily Archives: 14/06/2019

Electrics, Instrument Panel, Sensors, Sensors, System, Wiring

Friday 14th June 2019

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Music: Take That

I decided to visit Air Expo at Booker yesterday but I can honestly say the show was a complete waste of my time. It was raining all day and a lot of the exhibitors had scaled down their stalls and some hadn’t turned up at all! I did buy a Sky Echo II there so I’ll see how that works when I finally get the plane flying.

The aim for today was to continue the wiring and connect a few of the sensors.

The EMS loom has a D37 that connects to all the various sensors around the aircraft. It’s good to check the pin out with a multimeter before connecting to any of the sensors.
First up is the MAP sensor. The power and ground on this sensor can be shared with other sensors so I’ve broken out those pins to use for the the fuel pressure sensor.
The system power load can be displayed on the SkyView by measuring the potential difference across a precise resistive load, in this case a Amp shunt. The wires connect to either side of the resister. To protect the SkyView from high currents a 1 amp fuse is connected inline which I’ve ordered and will be arriving Sunday so I’ll fit on Monday.
The landing light controller that I bought from the States is wired up to a 3 position switch. I’ve designed the lights to be steady, wig wag and strobe. Hopefully it’ll work as designed.
To get the light functions I need a 3 pole and 2 pole switch.
The fuel pressure sensor is next but will be done on Monday now as I’ve run out of time.
The HDX displaying in s ‘6 pack’ mode but you can see some of the sensors working correctly including the MAP, voltmeter and ammeter readings.