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Fredriks Demo Bot. — Parallax Forums

Fredriks Demo Bot.

BamseBamse Posts: 561
edited 2011-07-25 21:57 in Robotics
Howdy...

Here is a fun little project I'm finally getting around to...
I'm using the Wheel kit with wheel encoders and one caster wheel for the platform.
The Wheels are driven by two HB-25 motor controllers, however I managed to burn one of them out so it has been taken off.
I got two PING))) sensors mounted on servos for collision detection.
A four line LCD display for status messages.
A Spinneret module together with a WiFi router for a webpage with sensor information.
I took an SX chip and built a "Cylon Light effect" with 8 LED's that I mounted in the front of the robot.
Driving is done with a wireless PS2 controller, the dongle was disconnected when I took the picture though.

Planned improvements,
Gyro for turning specific degrees.
Fluorescent blue light underneath the robot.
Accelerometer to measure tilt.
Light, voltage and temperature sensors.
Controlling the bot via my Android phone.

Any suggestions of cool sensors I forgot ?
DemoBot01.jpg
1024 x 768 - 149K

Comments

  • WhitWhit Posts: 4,191
    edited 2011-07-10 04:27
    Bamse,

    Looks great! erco is going to love the plywood base. He should be commenting soon...

    What is your power source? 12 volt SLA, maybe?
  • BamseBamse Posts: 561
    edited 2011-07-10 12:44
    I'm using a 12V SLA battery mounted underneath the base.
    The main fuse is 30 Amps and I made a power supplies for 3.3V, 5V and 6V.
  • ercoerco Posts: 20,255
    edited 2011-07-10 13:00
    Lookin' good, Bamse! Always great to see another Plybot on the loose. Post more pics and some video when you can!
  • Ahle2Ahle2 Posts: 1,178
    edited 2011-07-10 14:17
    Very cool project Bamse!! :)

    Btw, long time no seen. Where have you been for such a long time?
    (F
  • Martin_HMartin_H Posts: 4,051
    edited 2011-07-10 15:28
    That's a creative use of a Spinneret and WiFi router.
  • BamseBamse Posts: 561
    edited 2011-07-10 16:19
    Been building robots as a mentor for a couple of high school programs, FRC and BEST Robotics.
    A lot of fun but also a lot of hard work.
    At least it inspired me to dust off my Propeller skills and get going.

    By the way, every robot need it's own web-page, hopefully I can learn to program my Android phone one day as well.
    Another fun project, put a web-cam on the robot and have a laptop analyze the video stream and implement Vision recognition.

    @Ahle2
    Kul att n
  • ercoerco Posts: 20,255
    edited 2011-07-10 16:51
    Bamse: BTW, how did you burn out an HB-25? I thought those were bulletproof.
  • PJAllenPJAllen Banned Posts: 5,065
    edited 2011-07-10 17:25
    Requiem for an HB25 -

    http://forums.parallax.com/showthread.php?132895-Plastic-cover-for-the-HB-25-PCB.
  • WhitWhit Posts: 4,191
    edited 2011-07-10 19:47
    Thanks PJ. I missed that post. I was wondering the same thing as erco.
  • BamseBamse Posts: 561
    edited 2011-07-23 14:28
    It's alive and kicking...

    Got a new HB-25, made sure to apply threadlock and made some basic roaming code.
    Pings seem to work nice.

    http://www.youtube.com/watch?v=8PPFZo2DGZM

    http://www.youtube.com/watch?v=rqV66xzJ9qE
  • PJAllenPJAllen Banned Posts: 5,065
    edited 2011-07-23 19:40
    Rollin', rollin', rollin'
    Keep those robots movin'...
  • BamseBamse Posts: 561
    edited 2011-07-25 21:57
    Finally got the communication between the Spinneret and the Robot to work... ;-)

    The serial pin (22) on the Spinneret power supply header is level shifted to 5V so I used a 10K resistor in serial to protect my prop on the robot. This didn't work and it took me a few days to figure out that I needed to lower this resistor to 1K. It now works beautiful and I got a rudimentary web page up and running on the Spinneret.
    Currently the web page displays dummy values but I plan to plug in real values tomorrow.

    This is starting to get fun... ;-)
    RoboNet.jpg
    481 x 350 - 32K
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