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Thread: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

  1. #1

    Arrow Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Hey everybody-

    Here's a sneak peek into the upcoming Scribbler 2!

    Parallax has the Scribbler 2 currently in production- and this robot does much more than it's predecessor, the Scribbler!

    MULTICORE Programming

    Featuring a multi-core programming method that provides encoder feedback on the motors, it is now possible to make straight lines and precise drawing patterns!

    EXPANDED Hacker Port

    The S2 is designed to be released open source, and the hacker port means you'll want to take the cover off right away.

    Take a look at the upper right hand corner of the PCB- you'll see several rows of three-pin headers. Each of these sets of header has an I/O pin, power, and ground.

    MANY Uses

    The extra Propeller I/O's can be used for ultrasonic sensors, RF devices, servo-based pen lifter, cameras...



    Maddie the Intern
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    Last edited by Maddie the Intern; 08-25-2010 at 08:13 PM.
    "The inner machinations of my mind are an enigma..." -Patrick Star

    "Keep moving forward..." -Walt Disney

    "This is your brain on death. Any questions?" -MST3K, Soul Taker Episode

    "This was not an encouraging opening for a conversation. I -- I hardly know, sir, just at present -- at least I know who I was when I got up this morning, but I think I must have been changed several times since then." -Alice

  2. #2

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    My mouth is offically watering...
    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

  3. #3

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Is the hacker port open through the top?

  4. #4

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Silly Parallax.

    They should have just left the top off! The first thing people will do is remove the top.

    With the money saved in plastic, screws, and assembly labor, they could have easily paid for that USB adapter!

    Now seriously, this will be a great robot. One serious suggestion: beat WowWee at their own game. Polish the molds and offer some limited edition S2s, a clear body and a chrome (vacuum-metalized) version. You can charge more for these.

    Additionally, Parallax could sell some upgraded wheel & tire combinations at a premium price. People will customize & bling out these S2s given the opportunity. I will if you don't!

  5. #5

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Looks like standard Vigor gearboxes on the wheels. So where are the encoders? At 480 PPR, I figured they must be motor encoders, but me no see 'em.

  6. #6

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Erco,

    Here's where the encoders are located:



    But your eyes are very sharp, indeed -- for an old guy! The gearmotors in this photo are lacking the extended shafts and encoder disks! (I suspect the photo was taken with some alternate motors that were being tested.)

    -Phil
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  7. #7

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Hey Tony B.,

    No, the hacker port on the S2 is not open through the top


    ~


    ~
    "The inner machinations of my mind are an enigma..." -Patrick Star

    "Keep moving forward..." -Walt Disney

    "This is your brain on death. Any questions?" -MST3K, Soul Taker Episode

    "This was not an encouraging opening for a conversation. I -- I hardly know, sir, just at present -- at least I know who I was when I got up this morning, but I think I must have been changed several times since then." -Alice

  8. #8

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Tricky, Phil! So is the encoder "disk" actually a half black/half white cylinder, or something along those lines?

  9. #9

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    The encoder "disk" is actually a four-bladed piece of flat plastic (like a four-leaf clover) with a hole for the motor shaft. It interrupts the beam in one of those U-shaped transmissive sensors, which you're looking down on in the photo. (They're the smallest transmissive sensors I've ever seen.)

    -Phil

  10. #10

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Tony B., people deal with the hacker port on the old Scribbler in many ways, all of which will likely work on the S2.

    One way is to cut a small hole in the side of the pen port and route cables out through it to the top or bottom.

    I saw one web site where a guy glued the motors in place and left the top off. But you lose the CDS cells when you do that. Which might be fine if you are using those pins for something else.

    The approach I took on my Scribbler was to cut a hole in the bottom of the Scribbler, attach headers to a perfboard glue it to the hole. I then ran a cable back to the hacker port. I then had the headers available on the bottom of the Scribbler.

  11. #11

    Default Re: Sneak Peek: The Scribbler 2's Propeller Board and Hacker Port!

    Thanks for the replys.

    Sounds like it is good thing I own some Deremel tools with cut off wheels.

    Nurse! Hand me the Deremel!

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