DIY Hotas FA-18C Hornet Stick and Throttle

@Stormy801 Thanks! Happy to have found it

MISO is shared and connected to the same pin on the controller. You can’t split them.

Also, have a look here.

From the MMJoy2 wiki.
MISO is on pin 14.

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@Troll I had no clue that the Pro Micro’s have specific pin layouts. I’ve went through the MMJoy2 wiki too and probably just didn’t notice it. So thanks a ton for point that out!

So I have a follow up question. You mentioned possibly needing to add a resistor between the MISO and VCC on the Arduino, would that be in the wiring or soldered directly to the pins on the Pro Micro? Is this something I could test with the PCB’s before doing and not kill any of the hardware?

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Here’s how I did it on my PCB.

It doesn’t matter where you put the resistor as long as it’s between VCC and MISO.

You can try to just use the resistors on the TLE boards. If only the first TLE sensor works, but the second and third gets really weak readings, you need to remove the TLE resistors and use one on VCC-MISO.

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Ok cool thank you so much!

The helps a lot. Once Derbysieger let’s me know if I got the wiring for the buttons right I’ll get the order done for the I2C and stuff to finish the rest of the Hotas. You guys have been a ton of help and I really appreciate it!

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Yeah looks good now, that should work.

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Thank you so much for all the help! I really underestimated how much I didn’t know about wiring this all together. Looking forward to continuing everything

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Oh completely forgot to remind you again that the pins GPA7 and GPB7 might not work depending on the production date of the chip. If that’s the case you’ll be one pin short.

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Ahhh right. In that case, I’ll wire that one to the Arduino. Should have enough pins open for that.

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I am not near as knowledgeable as @Troll or @Derbysieger, but I’ll throw in a tip. Get a good-sized breadboard and test everything out before you start soldering if you aren’t already. After burning up various components over the years trying to fix mistakes, verifying it all real world on the breadboard has helped me tremendously.

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I do actually have a couple of breadboards for testing. I’m not really sure how big they are compared to standards though. They have letters A-J and numbers 1-30. I was talking to some family about starting this project before Christmas and while at my parents my dad dug through his stuff and found them. I do plan to use them to make sure it all works first, and to check the distance for the magnets and because @Troll mentioned that I might need a resistor between VCC and MISO for the sensors to all work together.

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