Pololu Wixel User Manual download pdf (Page 46)

This converted Tandy Deluxe Joystick is now

usable as a USB Human Interface Device.

Caution: The Wixel’s I/O lines are not 5V tolerant. You must use level-shifters, diodes, or voltage dividers

to connect the Wixel to outputs from 5V systems. Also, avoid drawing more current from an I/O line than

it can provide (see the discussion of P1_0 and P1_1 in Section 1.a). Avoid connecting multiple output pins

together.

Versions

• I/O Repeater App v1.3 [http://www.pololu.com/file/download/io-repeater-v1.3.wxl?file_id=0J562] (22k wxl), released

2012-07-03: Adds randomness to the radio packet transmission timing to prevent two transmitting Wixels from

being synchronized if they start up at the same time.

• I/O Repeater App v1.1 [http://www.pololu.com/file/download/io-repeater-v1.1.wxl?file_id=0J500] (20k wxl), released

2011-07-26: Fixes a bug in v1.0 which prevented P1_6 and P1_7 from being used as outputs.

• I/O Repeater App v1.0 [http://www.pololu.com/file/download/io-repeater-v1.0.wxl?file_id=0J465] (18k wxl), released

2011-03-25: Initial release.

9.g. Joystick App

Overview

This app allows a Wixel connected to a computer to be

used as a joystick. Readings from the Wixel’s analog and

digital input pins can represent up to six analog axes and

16 digital buttons or switches. The Wixel appears to the

computer as a standard USB Human Interface Device

(HID); after the Wixel has been configured, no driver

installation is necessary to use the joystick. With a Wixel

running the Joystick App, you can easily build a custom

USB input device or convert an existing device into a USB

peripheral, as this sample project

[http://www.pololu.com/docs/0J59] shows.

9. Wixel Apps Page 46 of 64

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Pololu Wixel User Manual Page 46