WinWing Orion 2 Ejection Handle

thingiverse

This is an ejection handle that mounts to the WinWing Orion 2 flight stick base. It utilizes and Arduino Nano to communicate with DCS for the F/A-18C to eject.To assemble, you'll need the following:2x Flanged Sleeve Bearings:https://www.amazon.com/dp/B0B7BJT67Q?ref=ppx_yo2ov_dt_b_product_details&th=12x Leaf Spring Shackle Boltshttps://www.amazon.com/dp/B0BNDQKC14?psc=1&ref=ppx_yo2ov_dt_b_product_details 2x Compression Springshttps://www.mcmaster.com/8969T92/1x Micro Limit Switchhttps://www.amazon.com/dp/B0B3DRXDRL?psc=1&ref=ppx_yo2ov_dt_b_product_details2x AN6 End Fittingshttps://www.amazon.com/dp/B0BN5RNHYC?ref=ppx_yo2ov_dt_b_product_details&th=11x Nylon Braided Fuel Hose (Cut to desired length)https://www.amazon.com/dp/B08GCVLD66?ref=ppx_yo2ov_dt_b_product_details&th=11x Roll Yellow Hockey Tape (Purely aesthetic, wrapped around the fuel hose to create the hazard stripe)https://www.amazon.com/dp/B083V6LXPP?ref=ppx_yo2ov_dt_b_product_details&th=11x Arduino Nano with Expansion Boardhttps://www.amazon.com/dp/B073JGV87F?psc=1&ref=ppx_yo2ov_dt_b_product_detailshttps://www.amazon.com/dp/B09KGVDXZY?psc=1&ref=ppx_yo2ov_dt_b_product_details1x Threaded Insertshttps://www.amazon.com/dp/B08K1BVGN9?psc=1&ref=ppx_yo2ov_dt_b_product_details1x USB-C Data cable of your choice, I use thesehttps://www.amazon.com/dp/B07DC5PPFV?ref=ppx_yo2ov_dt_b_product_details&th=11x Metric Screw Assortmenthttps://www.amazon.com/dp/B0C1GFRHGX?psc=1&ref=ppx_yo2ov_dt_b_product_detailsTo assemble:Remove the top plate from the flight stick base. Be careful to re-align the boot when re-installing.Insert the flange bearings and glue in place on the printed top plate.Attach the printed top plate to the flight stick base top plate using longer screws, and then re-attach the new assembly to the flight stick base.Cut fuel hose to desired length and attach 6AN fittings to each end, and wrap in hockey tape if you so choosePass the shackle bolts through the printed internal plate, place compression springs over the bolts, and pass the bolts through the top plate assembly.Place threaded inserts along the top of the main body, 2x M3 inserts for the Arduino extension board, 2x M2 threaded inserts for the limit switch, and 4x M2 threaded inserts for the back cover.Mount the limit switch, feeding the wires through the small tunnel and cut to appropriate length and attach the small back plate to the body.Attach the wires from the switch to the Arduino extension board, black to GND, and red to D12.Mount the Arduino extension board to the base, and insert the Arduino so the USB-C is facing the small hole at the front of the body.Slide the printed internal plate, bolt, and top plate assembly into the body, and secure using the appropriate screws. Program the Arduino using the following code:/*Tell DCS-BIOS to use a serial connection and use interrupt-drivencommunication. The main program will be interrupted to prioritizeprocessing incoming data.This should work on any Arduino that has an ATMega328 controller(Uno, Pro Mini, many others).*/define DCSBIOS_IRQ_SERIALinclude "DcsBios.h"/ paste code snippets from the reference documentation here /const int ejectionPin = 12; // the pin you have added ejection handleint buttonState = 0; // current state of the switchint lastButtonState = 0; // previous state of the switchvoid setup() {DcsBios::setup();pinMode(ejectionPin, INPUT_PULLUP); //sets pin no 5 as input with internal pullup}void loop() {buttonState = digitalRead(ejectionPin);if (buttonState != lastButtonState) {// if ejectionPin state is different from last time then check if handle has been pulledif (buttonState == LOW) { //handle has been pulledsendDcsBiosMessage("EJECTION_HANDLE_SW", "1");delay(10);sendDcsBiosMessage("EJECTION_HANDLE_SW", "1");delay(10);sendDcsBiosMessage("EJECTION_HANDLE_SW", "1");}else { // handle has not been pulled// don't do anything.}// Delay a little bit to avoid bouncingdelay(50);}// save the current state as the last state, for next time through the looplastButtonState = buttonState;}Further guidance on programing Arduinos for use with DCS can be found in this YouTube video:https://www.youtube.com/watch?v=ZGoG54vNyyIIf you're having issues with it, feel free to drop me a message on here and I'll try to help as much as possible! Enjoy!