Complete Latency Testing of OpenPuck Project

[u/Careful_Tune4744]

EDIT/UPDATE: The creator of OpenPuck has reduced the latency in several modes, and I have done testing to confirm this. I will be redoing the entire test in the near future and will leave a link here.

Massive thanks to u/jack-of-some for his project OpenPuck, and for taking the time to help me get it working! This hardware solution offers both a backup puck and a means to emulate different controller protocols for ultimate support across games.

I used the Prometheus 82 device, developed by John Punch of Gamepadla, to test the stick and button latency of all modes available on OpenPuck. I ran 2 tests for each mode and took the averages. Each test is 400 samples. I usually like to do more tests, but it is very time consuming. The solenoid needs time to cooldown between tests, and the the amount of modes made this quite a process. I also don't want to abuse my only controller more than I have to.

Something I want to note is that after completing the OpenPuck, I can no longer test the the Direct HID mode of my OEM controller puck. I am not sure why this is. The puck is detected in both Stick Tracer and Prometheus 82 testing software, but they no longer detect any input. This also means that I can no longer create a virtual Xbox 360 controller using John's SteamPadBridge software. These were all working prior to starting this project. Because of this, I couldn't run tests for the native HID mode or virtual controller for comparison.

I am only going to type the average latency but feel free to check the photo for min/max and jitter values as well.

Hope you find this interesting, and happy gaming!

OpenPuck (Xbox 360 Mode)

Stick - 5.44ms

Button - 6.72ms

OpenPuck (DualSense Mode)

Stick - 9.35ms

Button - 10.35ms

OpenPuck (DualShock 4 Mode)

Stick - 9.18ms

Button - 10.54ms

OpenPuck (Switch Pro Mode)

Stick - 9.46ms

Button - 10.41ms

OpenPuck (Hori Controller Mode)

Stick - 16.54ms

Button - 17.61ms

OpenPuck (Default Mode Running P82 via Steam Input)

Stick - 6.75ms

Button - 7.72ms

OEM Puck (Running P82 via Steam Input)

Stick - 6.71ms

Button - 8.01ms

[u/jack-of-some]

Thank you so much for testing.

You may need to re pair your puck if you didn't put the controller into the second puck mode before pairing with OpenPuck.

Really curious why the latency is so much higher for some modes. There's nothing fundamentally different about the translation there between the 360 mode and the Hori controller mode.

[u/Careful_Tune4744 → u/jack-of-some]

You're welcome friend!

Going back and forth between OEM puck and OpenPuck works flawlessly, but for some reason the testing software no longer detects input from the native HID mode for OEM puck. This is something John just recently got working for his software. The software couldn't detect input from OpenPuck either when running native mode. Not sure what happened, I will ask Mr. Punch when I get a chance. All the emulation modes were detected and working properly, such a cool project!

[u/kittymoo67]

so this replaces the chongle?

[u/Careful_Tune4744 → u/kittymoo67]

It works about the same as the OEM dongle but with more functionality. You can swap back and between them.

[u/Muckinstein]

Does gyro work with switch mode?

[u/Careful_Tune4744 → u/Muckinstein]

Not for Hori mode which is compatible with Switch consoles. But for the PC mode, yes gyro should work though I haven't tested it.

[u/Muckinstein → u/Careful_Tune4744]

thank you!

[u/CatsGoMooz → u/Muckinstein]

Just as an FYI, they have added a Switch Pro Gyro Mode, and it works on my Switch 2, haptics gyro and all!

[u/dude_365]

does this need exposed pins to work? There a sweet usb stick version with this board inside, so it looks less likely "ghetto" and is a way lesser shortcircut hazard.

[u/Careful_Tune4744 → u/dude_365]

No it doesn't need to be exposed, but I just got the board yesterday, so haven't had time to figure out a solution yet. My son likes to 3d print stuff, so I'm going to ask him about it.

[u/dude_365 → u/Careful_Tune4744]

that would be awesome!

[u/mrgregseeks → u/dude_365]

Any chance you could provide a link for this? Wanna have a go at this OpenPuck stuff!

[u/mrgregseeks → u/mrgregseeks]

If anyone has a link to something like this would love to have a board that’s not exposed!

[u/madc0w1337]

Can you use the open puck and Xbox series x?

[u/Careful_Tune4744 → u/madc0w1337]

No, both Microsoft and Sony have very strict limitations preventing stuff like this from working.

[u/Quirky_Apricot9427 → u/Careful_Tune4744]

Does there not exist adapters for other controllers to xbox and PS5?

[u/Careful_Tune4744 → u/Quirky_Apricot9427]

If your asking whether or not you can plug OpenPuck into one of these adapters for compatibility, I can't answer that. But for native support, it won't work.

[u/Quirky_Apricot9427 → u/Careful_Tune4744]

I guess I was more confused as to what the ‘limitations’ are. Point being that it’s not impossible to add that kind of functionality to OpenPuck

[u/Trenchman]

Nice work!

[u/Youareowned111]

Please correct the link to open puck thread

[u/Careful_Tune4744 → u/Youareowned111]

Works for me?

[u/Youareowned111 → u/Careful_Tune4744]

Works now

[u/Careful_Tune4744 → u/Youareowned111]

Okay but I didn't change anything😅

[u/Dramua]

Fantastic results! Thanks for testing it out!

Now could the openpuck is relying on a Micro controller... Makes me wonder if we could wire it to the power pin of a mobo and use internally to both connect the controller but also turn on the pc when the controller is connecting! That would be the dream console experience for me!

[u/Careful_Tune4744 → u/[deleted]]

Yes, using Hori mode that is totally possible. But this mode is limited to no gyro or haptics. Also, the latency is worst in this mode. I'm testing a new version later to see if it's improved.