3D printed line follower (It Works!)

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Comments

  • Actually, it's been fidget spinners... A lot of fidget spinners...
    Prop Info and Apps: http://www.rayslogic.com/
  • Just got custom PCBs from Seeed's pcb production, fusion thing.
    First time using them.
    Seem to be a good option for low cost, low volume production...

    The Activity Board sized PCB will give me a touchscreen for display, audio amp and a Nunchuck connector for manual control.

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    Prop Info and Apps: http://www.rayslogic.com/
  • Wound up just buying the Parallax 5-cell AA battery holder instead of printing one. It's just very convenient to have the barrel connector.

    Just wish Digikey sold it. Had to get from Mouser...
    Prop Info and Apps: http://www.rayslogic.com/
  • ercoerco Posts: 18,414
    Rayman wrote: »
    Actually, it's been fidget spinners... A lot of fidget spinners...

    Be the guy who makes a robot arm that spins a fidget spinner.

    See it, then be it, big shoutout to RayRay!

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • WhitWhit Posts: 3,706
    @Rayman - beautiful work!
    Whit+

    "We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney
  • ercoerco Posts: 18,414
    How's the line following coming, Ray?
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Thanks Whit.

    I've got IR things now... Just need some time to solder it up...
    Prop Info and Apps: http://www.rayslogic.com/
  • Line sensor array works!

    It's installed and appears to be working.

    It was designed for 3.3 V, but I'm testing at 5 V just because it was easy to just plug into the Activity Board headers...

    This runs it past redline though... The LEDs are pushing 54 mA and they are rated for a maximum of 50 mA. The current limiting resistors and the I/O expander chips are a bit warm...

    I've seen before how you can interface 5V I2C devices directly to Prop pins, so wasn't a surprise there really...
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  • I've posted the design files and code for this sensor array here:
    http://forums.parallax.com/discussion/166763/
    Prop Info and Apps: http://www.rayslogic.com/
  • ercoerco Posts: 18,414
    edited May 27 Vote Up0Vote Down
    Rayman wrote: »
    The current limiting resistors and the I/O expander chips are a bit warm...

    The line following competition is heating up!

    Congrats, always nice to hear things are going well and as planned.



    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Way to go Rayman, curve that tape into a figure eight, and post appropriately. Mays well get that under your belt in line following.
  • RaymanRayman Posts: 8,303
    edited June 10 Vote Up0Vote Down
    Just did a field test on chalk line in the driveway...
    Works OK when in the shade. Sun messes it up though...
    Have to print a visor to keep the sun away from the sensors...

    Chalk gets on the back wheel too... Perhaps I should polish it with some acetone...


    https://youtu.be/nqspME7FDOA
    Prop Info and Apps: http://www.rayslogic.com/
  • ercoerco Posts: 18,414
    Awesome, great work!! Sunlight messes up everyone, including the pros at Parallax's Line Follower Open circa 2012.

    http://forums.parallax.com/discussion/139607/participating-in-the-parallax-expo-lfo-line-following-open-2012
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • That was a tough line to follow!
    My bot was ill prepared for that challenge...

    But, I think this one would have a chance.
    These sensors give you a value, not just a binary result.
    So, they can distinguish the line, even with sunlight.

    But, it'll be a whole lot easier to program if it had a visor that can block the sunlight.

    May have to lower the sensor as well, but hoping to avoid that...
    Prop Info and Apps: http://www.rayslogic.com/
  • Just designed up this sun visor.
    Wanted it to be snap on, but that didn't work out.
    This is going to use the same 2 screws that secure the line array sensor to the bot.

    It's printing now... Maybe tonight can see if it fits...
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