OK, I have worked the past few days on getting the RED lamp wiring finished. I have decided to get my 1Hz blink rate from a NE555 timer, instead of messing about with Arduino Timers or delay()! The Red Lamp can be 24vdc or 5vdc. The only thing that I am concerned about would be 25vdc and its ground which really needs to be at the logical ground but as Murphy Laws, state that anything that can happen will, so I might make a rev to this sheet to remove the transistor driver and replace them with an Opto-Coupler. I have bypassed my two IC with a capacitor on each. I am using R2 = 10kΩ and an 800kΩ trim pot set to R1 =715kΩ, the capacitor C3 is 1µF also the voltage is 5vdc work fine. I am having trouble finding the right part.
For the Rudder, I am using a 100kΩ linear potentiometer with the center going to an Analog pin on the Arduino. The outside pins go to +5 Vdc and -5 Vdc with the center rail ground.
For the Brakes, I will use the same 100kΩ potentiometer, with the center going to Analog pin(s) on the Arduino. The Brakes potentiometers are wired so when not press on the brake the Arduino sees 0 Vdc, and with full depress +5 Vdc.
The print below is rev 1 it will be replaced in a day or two.
"Most air/ground sensing is done by means of a switch or sensor on the landing gear. The switch will open or close whenever the aircraft’s weight is either transferred to or removed from, the landing gear. For this reason, these switches are referred to as squat switches or weight on wheels (WOW) sensors. While most aircraft have the squat switches located on the main landing gear, some use the nose gear for this purpose" - Air Maintenance Update Magazine.
BTW I am using KiCAD running on my Debian 10.7v3 (Linux) System
Oh, I found a neat site for downloading your libraries for your Cad system.
Drawing is now final at V3