Leo Bodnar BU0836X Wire Interference

[obious]

Hi All,

 

I recently bought a Leo Bodnar BU0836X board to create a button box for my VR simpit.

 

After following his instructions and working up 5 rotary pots, 2 rotary switches, 3 on-on toggles and 3 on-off-off toggles, I’ve run into a bit of a problem.

 

When trying to assign the buttons to actions in game (F-18), I get weird behaviour with the buttons. For example, if I move a on-off-on switch to the off (middle) position, it registers as in input that’s been assigned to another switch.

 

When looking at the device properties in Windows via the game controller settings, a single axis is moving two inputs.

 

Am I experiencing some kind of wire interference? All the wires are in a very tight space and it looks rather like spaghetti junction (box is 220mm x 150mm x 80mm). I’m using single core wire if that helps.

 

Thanks!

 

Below in an image of what I’ve put together

 

Edited May 19, 2019 by obious

[lesthegrngo]

I have had some erratic inputs from Bodnar boards, and was able to correct them by re-flashing the firmware. The instructions are on the Bodnar site and despite my poor grip of computer tech I was able to do it.

 

Try that before anything else to make sure you aren't searching for something unrelated to your own hardware.

 

Cheers

 

Les

[DDSSTT]

I am using 3 of the BU0836X and 2 of the BBI-64. It sounds like you might have miss-aligned the wires... If you are using a On-Off-On, make sure you have the top wire with assigned to say B01, the middle wire assigned to "B01's GND", and the bottom wire assigned to B02. The next On - Off - On switch will start at B03. Its possible you wired it into the GND. I had this issue and it took me hours to find it.

 

Also, once you think the wire is seated and locked in, give it a good little tug and see if it pops out, sometimes it doesn't fully lock the wire into place and will give you a faulty connection.

[obious]

Ok, I think I've traced the problem down to a fault toggle; I removed it and the switches seem to be working properly.

 

However, that's fixed only one of the issues. I've noticed that I'm getting weird behaviour on an axis input.

 

I have 5 axis' plugged into the board (all bought from Leo's store) but for some reason, the Device Properties in Windows is showing a 6th. I've also noticed that when I move an axis (Y Rotation), it moves the 'phantom' axis but only about a 10th in the axis's total range when moving the associated Y axis from 0% to 100%

 

I'm thinking I also have a faulty pot?

[DDSSTT]

Could be, try to isolate the fault by removing all but 1 pot and then going from there. Maybe a single wire thread is crossing into the other input?

[obious]

Thought I'd report back here with the fix in case anyone else comes across it

 

Turns out there was some kind of factory grease/gunk on the back of the PCB that was causing signal overlap between the pins.

 

After cleaning with a few cotton buds, everything is working correctly. Big thanks to Leo from the store (ie replying to emails at 10pm GMT on a Sunday night) for helping be get through this one, was driving me crazy.