# Hardware **URL:** https://psychtoolbox.discourse.group/c/for-questions-relating-to-hardware-used-with-ptb/9.md?page=3 [Latest](https://psychtoolbox.discourse.group/latest.md) · [Categories](https://psychtoolbox.discourse.group/categories.md) · [Tags](https://psychtoolbox.discourse.group/tags.md) **Page:** 4 --- ## [How can I use Variable Refresh Rate(VRR)?](https://psychtoolbox.discourse.group/t/how-can-i-use-variable-refresh-rate-vrr/4746)
**Author:** [@AzerilA](https://psychtoolbox.discourse.group/u/AzerilA)\ **Replies:** 2\ **Last updated:** [December 15, 2022, 8:04pm UTC](https://psychtoolbox.discourse.group/t/how-can-i-use-variable-refresh-rate-vrr/4746 "2022-12-15T20:04:32Z")
Hello. I am trying to use the VRR feature in my test. I have almost all the requirements that be recommendations. I want to display a simple image stimulus in the scale of milliseconds and even under ten milliseconds. Bu… --- ## [Touch screen S2240T & Matlab with psychtoolbox](https://psychtoolbox.discourse.group/t/touch-screen-s2240t-matlab-with-psychtoolbox/4748)
**Author:** [@peter\_cz](https://psychtoolbox.discourse.group/u/peter_cz)\ **Replies:** 1\ **Last updated:** [December 14, 2022, 4:50pm UTC](https://psychtoolbox.discourse.group/t/touch-screen-s2240t-matlab-with-psychtoolbox/4748 "2022-12-14T16:50:14Z")
Dears, I am trying to interact with Dell S2240T touch screen monitor using Matlab. The experiment is about touching the screen where Matlab program is able to get actual “touch” image of the screen, gather the data on t… --- ## [Questions about Timing on Windows](https://psychtoolbox.discourse.group/t/questions-about-timing-on-windows/4736)
**Author:** [@kbfoo](https://psychtoolbox.discourse.group/u/kbfoo)\ **Replies:** 2\ **Last updated:** [December 9, 2022, 3:53pm UTC](https://psychtoolbox.discourse.group/t/questions-about-timing-on-windows/4736 "2022-12-09T15:53:12Z")
Hi all! I was wondering if anyone could give me more context about some of the PTB info I’m seeing in an Eyelink PTB experiment. Timing is important, so I want to make sure I’m doing the best I can within the constraints… --- ## [Synchronization failure only when external USB device connected](https://psychtoolbox.discourse.group/t/synchronization-failure-only-when-external-usb-device-connected/4260)
**Author:** [@aladdin](https://psychtoolbox.discourse.group/u/aladdin)\ **Replies:** 25\ **Last updated:** [December 9, 2022, 12:03pm UTC](https://psychtoolbox.discourse.group/t/synchronization-failure-only-when-external-usb-device-connected/4260 "2022-12-09T12:03:02Z")
Hello, I am using PTB on Windows 10, Matlab R2020b, GPU Radeon ™ Pro WX 5100. Synchronization error shows up only when I plug in my EEG device via USB. No error shows up otherwise. Weird thing is that some months back… --- ## [Runinng PTB on 64bit Raspberry Pi 4](https://psychtoolbox.discourse.group/t/runinng-ptb-on-64bit-raspberry-pi-4/4726)
**Author:** [@Ian-Max-Andolina](https://psychtoolbox.discourse.group/u/Ian-Max-Andolina)\ **Replies:** 7\ **Last updated:** [December 8, 2022, 7:24am UTC](https://psychtoolbox.discourse.group/t/runinng-ptb-on-64bit-raspberry-pi-4/4726 "2022-12-08T07:24:41Z")
We currently use Samsung Tablets running an android-based app for automated task training. Every so often, given my unease using Java and the android API, I yearn for a PTB-based tool. For another project, I just built a… --- ## [Cannot register keyboard input](https://psychtoolbox.discourse.group/t/cannot-register-keyboard-input/4721)
**Author:** [@jheyu0309](https://psychtoolbox.discourse.group/u/jheyu0309)\ **Replies:** 2\ **Last updated:** [December 7, 2022, 4:28am UTC](https://psychtoolbox.discourse.group/t/cannot-register-keyboard-input/4721 "2022-12-07T04:28:14Z")
Hi, I am trying to run a script on Matlab2022b using a M1 macbook pro. I am having trouble registering keyboard input when I open another screen \[window, windowRect\] = PsychImaging(‘OpenWindow’, screenNumber, white); … … --- ## [Linux (UBUNTU) + AMD - which card to choose?](https://psychtoolbox.discourse.group/t/linux-ubuntu-amd-which-card-to-choose/3776)
**Author:** [@jamespherman](https://psychtoolbox.discourse.group/u/jamespherman)\ **Replies:** 9\ **Last updated:** [November 6, 2022, 9:48pm UTC](https://psychtoolbox.discourse.group/t/linux-ubuntu-amd-which-card-to-choose/3776 "2022-11-06T21:48:50Z")
XYW4MDVA-2021323113941:34716d8b38995d20b67a81c7f5d8f6f2ced12b5022da617260708a2d0393a7fd I’m setting up a couple of new PTB systems for non-human primate visual system experiments. I’ll be building the linux PCs from sep… --- ## [Generating vibration with DaqAOutScan. SetReport error](https://psychtoolbox.discourse.group/t/generating-vibration-with-daqaoutscan-setreport-error/4677)
**Author:** [@Paul1](https://psychtoolbox.discourse.group/u/Paul1)\ **Replies:** 3\ **Last updated:** [November 2, 2022, 7:16pm UTC](https://psychtoolbox.discourse.group/t/generating-vibration-with-daqaoutscan-setreport-error/4677 "2022-11-02T19:16:12Z")
Hello, OS: Windows 10 Matlab version: 2021a PTB version: 3.0.17 (beta). I am trying to make a tactor via USB-1208FS vibrate. So far I was looping over an array using DaqAOut. This might not be the best way to generat… --- ## [Sync Trouble on Windows 11 with NVIDIA](https://psychtoolbox.discourse.group/t/sync-trouble-on-windows-11-with-nvidia/4671)
**Author:** [@mi\_mayer](https://psychtoolbox.discourse.group/u/mi_mayer)\ **Replies:** 1\ **Last updated:** [October 31, 2022, 3:23pm UTC](https://psychtoolbox.discourse.group/t/sync-trouble-on-windows-11-with-nvidia/4671 "2022-10-31T15:23:50Z")
Hello, I am on a Windows 11 laptop with a RTX3070 and the following PTB version: \>\> PsychtoolboxVersion ans = '3.0.18 - Flavor: beta - Corresponds to SVN Revision 13005 For more info visit: https://gith… --- ## [Installation on Lenovo Legion 5 Pro with dual boot Ubuntu 22.04 LTS](https://psychtoolbox.discourse.group/t/installation-on-lenovo-legion-5-pro-with-dual-boot-ubuntu-22-04-lts/4670)
**Author:** [@mi\_mayer](https://psychtoolbox.discourse.group/u/mi_mayer)\ **Replies:** 1\ **Last updated:** [October 31, 2022, 3:22pm UTC](https://psychtoolbox.discourse.group/t/installation-on-lenovo-legion-5-pro-with-dual-boot-ubuntu-22-04-lts/4670 "2022-10-31T15:22:41Z")
Hello, I am trying to install and use PTB on my Lenovo Legion 5 Pro with an RTX3070. The laptop has a dual boot with Windows 11 and Ubuntu 22.04 LTS, and I’m talking about the Ubuntu boot with MATLAB R2022b. I installed… --- ## [Ubuntu Linux users - what (AMD) card are you using and what OS version?](https://psychtoolbox.discourse.group/t/ubuntu-linux-users-what-amd-card-are-you-using-and-what-os-version/4527)
**Author:** [@jamespherman](https://psychtoolbox.discourse.group/u/jamespherman)\ **Replies:** 7\ **Last updated:** [October 17, 2022, 12:50am UTC](https://psychtoolbox.discourse.group/t/ubuntu-linux-users-what-amd-card-are-you-using-and-what-os-version/4527 "2022-10-17T00:50:56Z")
All – I recently updated my (Dell desktop) Ubuntu OS from 18.04 to 22.04 (I should have stopped at 20.04 but was feeling too optimistic because Mario said he was planning on upgrading his setups to 22.04 in the coming m… --- ## [System configurations](https://psychtoolbox.discourse.group/t/system-configurations/4646)
**Author:** [@Anwesha](https://psychtoolbox.discourse.group/u/Anwesha)\ **Replies:** 3\ **Last updated:** [October 15, 2022, 6:52pm UTC](https://psychtoolbox.discourse.group/t/system-configurations/4646 "2022-10-15T18:52:32Z")
Hello, I am going to purchase an i9 processor desktop with windows 10 for performing ephys experiments. I will use psychophysics toolbox for visual stimulation. According to the specifications given for psychtoolbox I ha… --- ## [DAQ Device for EEG-Task experiment set up](https://psychtoolbox.discourse.group/t/daq-device-for-eeg-task-experiment-set-up/4648)
**Author:** [@sepideh](https://psychtoolbox.discourse.group/u/sepideh)\ **Replies:** 5\ **Last updated:** [October 15, 2022, 6:41pm UTC](https://psychtoolbox.discourse.group/t/daq-device-for-eeg-task-experiment-set-up/4648 "2022-10-15T18:41:17Z")
I need a device that can send event markers generated by Matlab (Psych Toolbox) from the stimulus-presenting Windows laptop to the EEG device (Brain Vision Actichamp) through a USB port with high temporal accuracy. Woul… --- ## [Rpi4b | bcm2711 | What is page flipping?](https://psychtoolbox.discourse.group/t/rpi4b-bcm2711-what-is-page-flipping/3171)
**Author:** [@danielharvey](https://psychtoolbox.discourse.group/u/danielharvey)\ **Replies:** 22\ **Last updated:** [October 15, 2022, 6:37pm UTC](https://psychtoolbox.discourse.group/t/rpi4b-bcm2711-what-is-page-flipping/3171 "2022-10-15T18:37:48Z")
Hello, I would like to implement a visual stimulus generator using this toolbox with Octave 4.4.1 on Linux 4.19.113-v7l+ (raspbian). PsychtoolboxVersion \>\> 3.0.15 - Flavor: Debian package - psychtoolbox-3 (3.0.15.20190… --- ## [Octave 7.2 installation issue under MacOS M1](https://psychtoolbox.discourse.group/t/octave-7-2-installation-issue-under-macos-m1/4583)
**Author:** [@tomwallis](https://psychtoolbox.discourse.group/u/tomwallis)\ **Replies:** 4\ **Last updated:** [September 27, 2022, 5:11pm UTC](https://psychtoolbox.discourse.group/t/octave-7-2-installation-issue-under-macos-m1/4583 "2022-09-27T17:11:22Z")
Hi, I’m hoping to be able to install PTB using Octave under MacOS on an M1 chip for development purposes (real experiments run on Linux), but I get an aborted installation error that I’m not sure how to solve. Octave: … --- ## [Joystick axis not read using Gamepad function](https://psychtoolbox.discourse.group/t/joystick-axis-not-read-using-gamepad-function/4250)
**Author:** [@antonicc](https://psychtoolbox.discourse.group/u/antonicc)\ **Replies:** 17\ **Last updated:** [September 27, 2022, 1:46pm UTC](https://psychtoolbox.discourse.group/t/joystick-axis-not-read-using-gamepad-function/4250 "2022-09-27T13:46:50Z")
Hi, I would like to read a joystick in PTB 3.0.17 on Ubuntu 18.04 with Matlab 2020a. It is a Current Design grip device that is presented as a joystick to the system by its 932 interface. I followed the instructions in… --- ## [Timing issues/Missed frames on Dell XPS13 Ubuntu 18.04](https://psychtoolbox.discourse.group/t/timing-issues-missed-frames-on-dell-xps13-ubuntu-18-04/3751)
**Author:** [@natalia](https://psychtoolbox.discourse.group/u/natalia)\ **Replies:** 15\ **Last updated:** [September 2, 2022, 9:27pm UTC](https://psychtoolbox.discourse.group/t/timing-issues-missed-frames-on-dell-xps13-ubuntu-18-04/3751 "2022-09-02T21:27:04Z")
Dear all, we are experiencing timing problems on our Dell XPS13 Laptop (Developer edition) running Ubuntu 18.04.5 LTS Psychtoolbox does not issue any warnings/errors, and the typical tests run fine (e.g. VBLSyncTest). … --- ## [PTB sync trouble over 50ft fiber-optic HDMI](https://psychtoolbox.discourse.group/t/ptb-sync-trouble-over-50ft-fiber-optic-hdmi/4584)
**Author:** [@PapaleA](https://psychtoolbox.discourse.group/u/PapaleA)\ **Replies:** 3\ **Last updated:** [August 30, 2022, 8:52pm UTC](https://psychtoolbox.discourse.group/t/ptb-sync-trouble-over-50ft-fiber-optic-hdmi/4584 "2022-08-30T20:52:35Z")
Dear PTB Team, We are trying to set up a PTB experiment where we use a dual-monitor setup. The drawn up design of the setup calls for a stimulus computer running PTB to be in one room (with an experimenter-monitored di… --- ## [How to play multichannel audio without ASIO](https://psychtoolbox.discourse.group/t/how-to-play-multichannel-audio-without-asio/4562)
**Author:** [@qiuzelin](https://psychtoolbox.discourse.group/u/qiuzelin)\ **Replies:** 2\ **Last updated:** [August 8, 2022, 5:52am UTC](https://psychtoolbox.discourse.group/t/how-to-play-multichannel-audio-without-asio/4562 "2022-08-08T05:52:42Z")
Hello! I want to use PsychPortAudio to play multichannel(\>2) audio with a steinberg UR824 soundcard. I know now ASIO is not supported, but I can only find 2 channels through WASAPI. So I want to know how I can finis… --- ## [Windows 11 support?](https://psychtoolbox.discourse.group/t/windows-11-support/4556)
**Author:** [@Anwesha](https://psychtoolbox.discourse.group/u/Anwesha)\ **Replies:** 1\ **Last updated:** [July 22, 2022, 6:33pm UTC](https://psychtoolbox.discourse.group/t/windows-11-support/4556 "2022-07-22T18:33:53Z")
Is psych toolbox supported well in windows 11 or 10 is a better option. Thanks --- ## [Question about connectable touch device by function GetTouchDeviceIndices](https://psychtoolbox.discourse.group/t/question-about-connectable-touch-device-by-function-gettouchdeviceindices/4505)
**Author:** [@Kudo](https://psychtoolbox.discourse.group/u/Kudo)\ **Replies:** 1\ **Last updated:** [June 23, 2022, 5:44pm UTC](https://psychtoolbox.discourse.group/t/question-about-connectable-touch-device-by-function-gettouchdeviceindices/4505 "2022-06-23T17:44:06Z")
Dear psychtoolbox community, I would like to know which specific device can be recognized as a touch device (by function GetTouchDeviceIndices), because I have tried Apple’s Magic Trackpad2 (Model A1535) and iPad Pro 12… --- ## [Synchronization failiure on a new PC](https://psychtoolbox.discourse.group/t/synchronization-failiure-on-a-new-pc/4492)
**Author:** [@bapar](https://psychtoolbox.discourse.group/u/bapar)\ **Replies:** 3\ **Last updated:** [June 19, 2022, 9:34pm UTC](https://psychtoolbox.discourse.group/t/synchronization-failiure-on-a-new-pc/4492 "2022-06-19T21:34:43Z")
We replaced our experiments PC and since then have been getting Sync Errors from the VBSyncTest(). I tried to follow the suggestions on the website for failed sync tests, however the problem continues. The sync errors ha… --- ## [Error downloading psychtoolbox 3.0.11 in MatLab R2015b 32-bit Windows](https://psychtoolbox.discourse.group/t/error-downloading-psychtoolbox-3-0-11-in-matlab-r2015b-32-bit-windows/4471)
**Author:** [@djcvan](https://psychtoolbox.discourse.group/u/djcvan)\ **Replies:** 3\ **Last updated:** [June 10, 2022, 11:56pm UTC](https://psychtoolbox.discourse.group/t/error-downloading-psychtoolbox-3-0-11-in-matlab-r2015b-32-bit-windows/4471 "2022-06-10T23:56:14Z")
Hello everyone! I am new to MatLab and psychtoolbox and am attempting to download psychtoolbox onto an old 32-bit Windows 7 computer. Here is what I have done so far. I would greatly appreciate any insight or help into s… --- ## [Tetris-like experiment, a lot of lagging](https://psychtoolbox.discourse.group/t/tetris-like-experiment-a-lot-of-lagging/4333)
**Author:** [@makis6](https://psychtoolbox.discourse.group/u/makis6)\ **Replies:** 13\ **Last updated:** [June 2, 2022, 4:16pm UTC](https://psychtoolbox.discourse.group/t/tetris-like-experiment-a-lot-of-lagging/4333 "2022-06-02T16:16:36Z")
Dear all I have a macbook pro and I use matlab 2019 and PTB3 for the creation of an experiment which is like tetris. There are some X dropping from the top of the screen and the user has to move the cursor to catch thes… --- ## [Synchronization failure Windows](https://psychtoolbox.discourse.group/t/synchronization-failure-windows/4450)
**Author:** [@AnnaB](https://psychtoolbox.discourse.group/u/AnnaB)\ **Replies:** 2\ **Last updated:** [May 31, 2022, 8:58am UTC](https://psychtoolbox.discourse.group/t/synchronization-failure-windows/4450 "2022-05-31T08:58:48Z")
Hi everyone, pleasure to meet you! I am a PhD student in Neuroscience at the university of Turin and I have recently started using Psychtoolbox for a visual stimulation paradigm while recording facial EMGs. I started wor… --- ## [Screen('OpenWindow') getting stuck when external soundcard connected to PC](https://psychtoolbox.discourse.group/t/screen-openwindow-getting-stuck-when-external-soundcard-connected-to-pc/4444)
**Author:** [@AlexEgea](https://psychtoolbox.discourse.group/u/AlexEgea)\ **Replies:** 4\ **Last updated:** [May 23, 2022, 3:22pm UTC](https://psychtoolbox.discourse.group/t/screen-openwindow-getting-stuck-when-external-soundcard-connected-to-pc/4444 "2022-05-23T15:22:51Z")
Hi All, I am having an issue presenting a visual stimulus on a second screen, but only when I have an external sound card (ASUS U7 MKII) connected to my PC, running Windows 10. I am running Psychotoolbox 3.0.16, on Matl… --- ## [AMD shared graphics memory](https://psychtoolbox.discourse.group/t/amd-shared-graphics-memory/4440)
**Author:** [@Petra](https://psychtoolbox.discourse.group/u/Petra)\ **Replies:** 2\ **Last updated:** [May 20, 2022, 7:02pm UTC](https://psychtoolbox.discourse.group/t/amd-shared-graphics-memory/4440 "2022-05-20T19:02:40Z")
Hello, I would like to purchase a Dell Vostro 3535 laptop, and install Ubuntu to run experiments with PTB: Dell Vostro specs It has an AMD Ryzen 7 5825U 8-core Processor with RadeonGraphics, and when looking into the … --- ## [No audio when movies are played in Windows](https://psychtoolbox.discourse.group/t/no-audio-when-movies-are-played-in-windows/4404)
**Author:** [@mbeauchamp](https://psychtoolbox.discourse.group/u/mbeauchamp)\ **Replies:** 8\ **Last updated:** [May 12, 2022, 7:35pm UTC](https://psychtoolbox.discourse.group/t/no-audio-when-movies-are-played-in-windows/4404 "2022-05-12T19:35:36Z")
K2FHL9UZ-20225415513:e01a7fefc00191e1d380f0b7101affce6736bad76750c3113243c7563a3f190c I have used PTB for many years on Macs to play audiovisual movies; here is some sample code: Here is a link to an archive containin… --- ## [ISO: recommendations for stereo goggles](https://psychtoolbox.discourse.group/t/iso-recommendations-for-stereo-goggles/4386)
**Author:** [@EyesDude](https://psychtoolbox.discourse.group/u/EyesDude)\ **Replies:** 1\ **Last updated:** [May 5, 2022, 9:31pm UTC](https://psychtoolbox.discourse.group/t/iso-recommendations-for-stereo-goggles/4386 "2022-05-05T21:31:36Z")
Subject line says it all: Does anyone have any recommendations for stereo goggles? The most recent thing I’ve found in the archive describes NVidia’s goggles as “obsolete.” Are there contemporary alternatives? Thanks in… --- ## [Windows 10, Stereomode=1 seems to only open one screen in StereoDrawBuffer](https://psychtoolbox.discourse.group/t/windows-10-stereomode-1-seems-to-only-open-one-screen-in-stereodrawbuffer/4284)
**Author:** [@mpiano10](https://psychtoolbox.discourse.group/u/mpiano10)\ **Replies:** 3\ **Last updated:** [May 3, 2022, 12:28am UTC](https://psychtoolbox.discourse.group/t/windows-10-stereomode-1-seems-to-only-open-one-screen-in-stereodrawbuffer/4284 "2022-05-03T00:28:32Z")
Hello, I come back to this forum every few years with different difficulties with getting the obsolete NVIDIA 3DVision active shutter glasses to work with whatever latest setup I have, I’m sorry. Quadro K2000D single di… [Previous page](https://psychtoolbox.discourse.group/c/for-questions-relating-to-hardware-used-with-ptb/9.md?page=2) [Next page](https://psychtoolbox.discourse.group/c/for-questions-relating-to-hardware-used-with-ptb/9.md?page=4)