Wiring LEDs for 757/767 Annunciators

Hi Karl,

I completed assembling the unit today, as you can see below, except for the annunciator slabs, for which I need to find some suitably opaque black paint:

The red LED's within the fuel cutoff switches are not operational, as I found they cannot be wired independently of the switch connections.

For the interface card I used an Arduino Mega 2560, because it handles all the inputs and outputs with ease:

I printed a base for the Mega, so that the protruding terminals at the back would not be shorted by the metallic screws on the spoiler assembly. It was a tight fit, and I had to to bend the pins on the DuPont male connectors into an "L" to get them to fit in the space between the left and centre units. Here is a closer look at the wiring just prior to final assembly:

I also completed the Arduino sketch, and a corresponding FSUIPC4-LUA script to interface with my Level-D B767 on FSX. Of course, I used Nico Kaan's lekseecon module to achieve this. Everything works, except for the Engine Fire LED's and the REV ISLN annunciator, for which there are no offsets/control variables in lekseecon anyway.

This was an excellent design, Karl, and I am looking forward to your motorized B737 throttle.

Hi Chakko! Yes you must use resistors! These are placed on my Arduino prototype shield. I will try and find out the specs shortly and dig out a few photos. Kind Regards Karl

Hi Karl,

I await your response, but in the meantime, I have opened a thread on the Arduino forum to discuss this issue:

forum.arduino.cc

I’m building an Arduino Mega 2560-based Throttle Quadrant to interface with my Flight Simulator system running FSX. The unit will have 6 potentiometers, 6 toggle switches [on-on and (on) -off-(on)], and 5 annunciators. Each annunciator will have two LED’s for illumination, and they will be either both on or both off, and their state is to be determined by the output of a single digital pin. Here is the LED I plan to use alongside an annunciator housing with two such inserted. I have previou...

Thanks,

Chakko.