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Solarbotics GraviTrack Marble Machine Kit - Battery Edition

SKU: CE05195

$59.00 AUD, inc GST
$53.64 AUD, exc GST
Solarbotics GraviTrack Marble Machine Kit - Battery Edition
59 AUD

SKU: CE05195

$59.00 AUD, inc GST
$53.64 AUD, exc GST
2 reviews 0 5 5


  • $6.95 Standard (2-4 days, tracked)
  • $9.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

Construct your own hypnotic marble-coaster with this superb Solarbotics kit. Watch as the marbles are cycled through synchronised mechanical arms using nothing more than laser-cut wood and a single motor. There's no soldering, programming or microcontrollers involved, just a clever design which makes for the perfect desktop gadget.


  •     Beginner skill level - ages 12+
  •     Basic hand tools required (Phillips screwdriver, craft knife, wood glue)
  •     2 x AAA batteries required (not included)
  •     2 hour build time

What's in the Kit:

  •     1 x Set of laser-cut wood parts
  •     1 x GM3 Motor + battery pack
  •     1 x GMW Motor mount
  •     4 x 3/8" steel marbles
  •     Assembly hardware

This product is listed in:

Documentation and Resources:

Product Comments

Customer Reviews

  1. Review by James verified purchaser

    Device draws around 80mA, with 94mA peak at one spot in the wheel rotation. 2 x AAAs wont last long. I intended to add a larger battery (probably LiPo), ATMega329P micro, RGB lights, light dependent resistor, etc. Just to make it more interesting. Cant help myself, love the Arduino stuff.
    Construction is not too hard, the box says age 12+, but I would not give this as a present without providing help. There are a few points where you could get the construction wrong and it would not work, leading to disappointment.
    There was one error in the manual, step 1.5 said panel 3, it should have been panel 2.
    Initially I experienced a problem with the lower arm picking up the ball bearings, adjustment of the linkage screws fixed it. Also the balls can fly off the 'S' bend of lower the track, but only sometimes.
    Overall a good design and the kit quality was excellent. The price was a bit steep for me; but then I just spent $40 on a basic Christmas present for my 3 year old grandson. Go figure .... LOL (Posted on 22/11/2018)

  2. Review by Kurt verified purchaser

    This Marble Machine is well designed and it becomes addictive to watch! I can't get my grand kits away from it.
    A super machine (Posted on 29/10/2018)

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $9.95 for Express Post (Overnight for most of Australia, 2+ days for rural, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!