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Very minor cleanup, e.g. consistent use of Op Mode vs. op mode.

Chris Johannesen
2019-10-17 09:57:25 -07:00
parent cd1f7aa7d4
commit 006a7985d0
1 changed files with 4 additions and 4 deletions
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Using-an-External-Webcam-with-Control-Hub.md

@ -1,5 +1,5 @@
## Introduction
The FTC Game Manual Part 1 allows USB Video Class (UVC) cameras for robot vision tasks. If you are using a Control Hub, then you will need to use an external webcam, since the Control Hub does not include a built-in camera. This document describes how to connect, configure and use an external webcam with a REV Robotics Control Hub.
The FTC Game Manual Part 1 allows USB Video Class (UVC) cameras for robot vision tasks. If you are using a REV Robotics Control Hub, then you will need to use an external webcam, since the Control Hub does not include a built-in camera. This document describes how to connect, configure and use an external webcam with a Control Hub.
## Type of External Camera
@ -25,7 +25,7 @@ Use the Configure Robot menu item on the paired Driver Station phone to add the
<p align="center">[[/images/Using-an-External-Webcam-with-Control-Hub/webcam-config-CH.jpg]]<p>
You can keep this default name (the sample modes reference this name) or change it. If you change the webcam name, make sure your op modes refer to this new name.
You can keep this default name (the sample Op Modes reference this name) or change it. If you change the webcam name, make sure your Op Modes refer to this new name.
## Sample Op Modes
@ -35,7 +35,7 @@ The FTC software offers "webcam" versions of its sample Blocks and Java Op Modes
<p align="center">[[/images/Using-an-External-Webcam-with-Control-Hub/blockswebcam.jpg]]<p>
Before editing an Op Mode, verify that the intended configuration (with camera) is active. Also verify that the name referenced in the Op Mode matches the name specified in the configuration file.
Before opening and editing an Op Mode, verify that the intended configuration (with camera) is active. Also verify that the name referenced in the Op Mode matches the name specified in the configuration file.
## Image Preview
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<p align="center">[[/images/Using-an-External-Webcam-with-Control-Hub/DS-webcam-preview-CH-3.jpg]]<p>
**Important Note:** Because the Camera Stream feature is only available during the INIT phase of an op mode, you must ensure that the Vuforia library is activated in your Op Mode _**before**_ the waitForStartCommand:
**Important Note:** Because the Camera Stream feature is only available during the INIT phase of an Op Mode, you must ensure that the Vuforia library is activated in your Op Mode _**before**_ the waitForStart command:
<p align="center">[[/images/Using-an-External-Webcam-with-Control-Hub/activateBeforeWaitForStart.jpg]]<p>