# Tracker calibration not showing on screen

**URL:** <https://discourse.psychopy.org/t/tracker-calibration-not-showing-on-screen/11114>\
**Category:** Builder\
**Tags:** screen, eyetracking, iohub\
**Created:** [February 20, 2020, 10:58pm UTC](https://discourse.psychopy.org/t/tracker-calibration-not-showing-on-screen/11114 "2020-02-20T22:58:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Joseph\_Orr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/joseph_orr/32/6669_2.png) [@Joseph\_Orr](https://discourse.psychopy.org/u/Joseph_Orr)\
**Post date:** [February 20, 2020, 10:58pm UTC](https://discourse.psychopy.org/t/tracker-calibration-not-showing-on-screen/11114/1 "2020-02-20T22:58:10Z")

</div>

If this template helps then use it. If not then just delete and start from scratch.

**OS** (e.g. Win10): Win10  
**PsychoPy version** (e.g. 1.84.x): 3.2.4  
**Standard Standalone? (y/n)** If not then what?: y  
**What are you trying to achieve?:** calibrate eye tracker

I tried implementing the code on [https://www.psychopy.org/api/iohub/device/eyetracker\_interface/Tobii\_Implementation\_Notes.html](https://www.psychopy.org/api/iohub/device/eyetracker_interface/Tobii_Implementation_Notes.html), which appears to be for PsychoPy3. I was able to successfully get my eye tracker calibration to work properly following the iohub\>SelectTrack coder demo. I inserting the following code at a Begin Experiment tab in builder:

```auto
from psychopy.iohub import launchHubServer
from psychopy.core import getTime, wait

iohub_config = {'eyetracker.hw.tobii.EyeTracker':
    {'name': 'tracker', 'runtime_settings': {'sampling_rate': 120}}}

io = launchHubServer(**iohub_config)

# Get the eye tracker device.
tracker = io.devices.tracker

# run eyetracker calibration
r = tracker.runSetupProcedure()

```

When I run the experiment I get the Experiment Info prompt, then the screen maximizes. I can see the lights on the Tobii following the same pattern as the SelectTracker demo, but the screen is just blank. Is there some additional code that I need to use to get the Calibration to show? I examined run.py in coder\_demos\iohub\eyetracking\selectTracker but I don’t see any window controls until after tracker.runSetupProcedure().