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rodi-web

A web-service interface for Gary Servin's RoDi (Robot Didáctico inalámbrico) wireless robot. Allows programmers to control RoDi by simply using HTTP requests, ie., from a web browser, a bash script, and basically any programming language.

API

  • Blink

    GET /1/<rate-in-milliseconds>/

    ie.,

    curl --get http://192.168.4.1:1234/1/1000/ // blink each second
curl --get http://192.168.4.1:1234/1/0/    // stop blinking

  • Sense

    GET /2/

    Returns a JSON formatted array of two integers, for left and right sensor values.

    ie.,

    $curl --get http://192.168.4.1:1234/2/
[62, 66]

  • Move

    GET /3/<left-wheel-speed[-100:100]>/<right-wheel-speed[-100:100]>/

    ie.,

    $curl --get http://192.168.4.1:1234/3/0/0/          // stop
$curl --get http://192.168.4.1:1234/3/100/-100/     // turn right
$curl --get http://192.168.4.1:1234/3/-100/100/     // turn left
$curl --get http://192.168.4.1:1234/3/100/100/      // forward
$curl --get http://192.168.4.1:1234/3/-100/-100/    // backward

    100 moves wheel forward at full speed -100 moves wheel backward at full speed

  • Sing

    GET /4/<note>/<duration>

    ie.,

    curl --get http://192.168.4.1:1234/4/31/250/ // Play a note for 250ms

    Notes can be found in http://arduino.cc/en/tutorial/tone

  • See

    GET /5/

    Returns a JSON formatted integer, for the distance in centimeters.

    ie.,

    $curl --get http://192.168.4.1:1234/5/
13

  • Pixel

    GET /6/<red>/<green>/<blue>

    Set the color of the onboard RGB led (pixel)

    ie.,

    $curl --get http://192.168.4.1:1234/6/0/0/0/        // off
$curl --get http://192.168.4.1:1234/6/255/0/0/      // red
$curl --get http://192.168.4.1:1234/6/0/255/0/      // green
$curl --get http://192.168.4.1:1234/6/0/0/255/      // blue
$curl --get http://192.168.4.1:1234/6/255/255/255/  // white

  • Sense Light

    GET /7/

    Returns a JSON formatted integer, for the light intensity level (0 - 1023).

    ie.,

    curl --get http://192.168.4.1:1234/7/
66

  • Led

    GET /8/<state[0|1]>

    Turns the onboard led on or off.

    ie.,

    curl --get http://192.168.4.1:1234/8/0/    // turns the onboard led off
curl --get http://192.168.4.1:1234/8/1/    // turns the onbboard led on

  • Battery

    GET /9/

    Returns a JSON integer, for battery charge value in miliVolts.

    ie.,

    $curl --get http://192.168.4.1:1234/9/
3700

Authors

Cool Stuff

I recommend Turtle Blocks Javascript as a client for RoDi-web. Grab the latest bits from https://github.com/walterbender/turtleblocksjs. Don't forget to load the RoDi plugin!