Instructables

Simple Bots: Scrub

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As part of my effort to make our life easier through robotics, I have made a low-cost cleaning bot called Scrub Bot. This state of the art cleaning robot is great at polishing floors and shining glass tables (provided that you soap it up first). It also disperses small particulates evenly across your floor in such a manner that your home may look cleaner than it actually is. That's not all! Thanks to its unique non-patented frisbee design, Scrub Bot allows you to easily add all of your favorite thingamajigs and what-nots directly to the bot without wondering where to put them. Create a circuit to toggle each motor independantly for a more "intentionally driven" effect. What are you waiting for? Make one today! Everyone, but your pets, will thank you.





 
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Step 1: Go get stuff

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You will need:

(x1) Frisbee
(x3) Scrubber brushes
(x3) Adjustable tracks
(x2) Computer fans (of the same size)
(x1) 9V battery connector
(x1) 9V battery
(x6) 1-1/2" bolts
(x18) nuts for 1-1/2" bolts
(x6) 1/2" bolts and nuts
(x1) a bunch of small zip ties

Step 2: Drill holes

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Drill holes in the end of each scrubber brush such that you can later bolt on the adjustable track parallel along its length.

You can use the ends of the track as a drilling guide.

Step 3: Attach the track

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Place 1-1/2" bolts down through the adjustable track such that the middle slider part is facing upwards.

Insert one or two nuts to space the track off of the scrubber brush in such a way that the middle slider can move freely.

Insert the bolts into the hole on the scrubber brush and fasten it on with another nut.

Step 4: Mark for drilling

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Place the slider bracket flush with the edge of the frisbee and make marks for drilling.

These marks should be made in such a way that it splits the frisbee into even thirds.

Step 5: Drill

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Drill holes in the frisbee with an 1/8" drill bit.

Step 6: Fasten

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Flip the frisbee upside down and tightly fasten the middle sliders to the frisbee using 1/2" nuts and bolts.

The brushes should now be acting to create a tripod to support the frisbee.
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DhiruDhole1 year ago
hey brother where will i get adjustable tracks
randofo (author)  DhiruDhole1 year ago
I got mine from Ace Hardware. They are used for windows to allow them to open a little and lock in place.
ade souza1 year ago
the reason it will not move is because 1.there maybe too much friction between the surface and the brushes. 2.the air flow through the fans are not configured correctly. try using some stability for it -- and reorient the fans
http://www.flickr.com/photos/58556129@N04/8698474814/
damato323 years ago
I just finished mine, and it doesn't move too much. I've loosened the slider tracks, tightened them, repositioned the brushes a few different ways, but nothing I try will produce movement more than a couple inches, at most. Nothing at all like the video posted here. Any suggestions?
http://www.flickr.com/photos/58556129@N04/8698474814/
tan123 damato322 years ago
Try bending the bristles back, or trimming them on a slope so the front bristles are slightly shorter than the back ones.
We had made the scrubber as a model for our science project.....
I just wanna know all about scrubber to defend our model like why does it moves or turns ,etc...
Plssssss. I need your help!
randofo (author)  85_DaRkBlOod_692 years ago
Also, post a picture of your bot so we all can see!
randofo (author)  85_DaRkBlOod_692 years ago
What about it do you think makes it move and turn? What do you think would happen if you had not broken off the fan blades?
taco dog2 years ago
I'm having trouble finding "scrubber brushes" that aren't like to big can you tell me where you got yours?
i don't have a adjustable track...wat else can i use instead of the tracks?
i don't have a adjustable track...wat else can i use instead of the tracks?
ayodeji2 years ago
can i use a vibrator motors found in mobile phones
randofo (author)  ayodeji2 years ago
Those are much too small. Try some of the motors inside of motorized back massagers.
jdseagull2 years ago
instead of cutting the blades of the fan placing them adjacently and connecting them with opposite polarity will make them rotate..Any improvements in this???
randofo (author)  jdseagull2 years ago
You can't easily reverse the polarity on computer fans. They are not designed to be reversible.
ShashankPH2 years ago
Instead of adjustable lid supports, can I use anything else
randofo (author)  ShashankPH2 years ago
Yes! Improvise. See what works for you. There is no right answer. I just went with what seemed to work at the time.
damato323 years ago
Here's my bot. This one doesn't move much at all. Any ideas why?
5948705178_96d892e8e3.jpg5948151439_226abf278d.jpg
randofo (author)  damato322 years ago
Nope. No clue why. Maybe the screws aren't holding it firmly enough to the frisbee and the vibrations are not being translated down into the brushes? It is hard to say. It appears to be built correctly.
ceeceemerto3 years ago
what happens if you only use one fan instead of two fans?
randofo (author)  ceeceemerto3 years ago
Two fans create competing vibration patterns. It will still work with one fan, there will just be less of a dynamic vibration/motion.
ShashankPH3 years ago
Nice Thing but can I use 1 Computer Fan ?
sandchica3 years ago
Those adjustable supports can be found on google by looking up "adjustable lid supports". They are mainly used for storage trunks and things like jewelry box lids.
How long does the battery last? Seems like a big draw on a little battery.
randofo (author)  burnerjack013 years ago
I don't know. I haven't replaced the battery yet. So, at very least, an hour.
harkaran3 years ago
will dis work faster if i put 4 comp fans instead of 2 ?
Eman0123 years ago
How long does it take to finish this? And how much the materials?
Instead of the bracket/moving things, you could use velcro. Assuming the brushes don't slide on the track when moving. I think that would be cheaper, easier to adjust, and easier to provide symmetry to the movement.
Eman0123 years ago
How can I make the rotation of the scrub faster?
is there another name for the adjustable tracks?
or any substitute ?
cause i've been to ace hardware and they dont even know what that thing is.
it's really hard to find it here in philippines.
randofo (author)  dessa_kazune043 years ago
It is called an adjustable support. They are use for things like holding up chest lids that pivot upwards or window panes.

It appears to have Ace part #5300421

Here is a photo.
P1070052.JPG
thanks a lot!
Would a pager motor or two work instead of the fans?
randofo (author)  Arc Trooper 55553 years ago
Unlikely to be powerful enough for something of this size.
nubabuba3 years ago
what do the tracks help with exactly? i have a school tech fair and i would love to make one of these
randofo (author)  nubabuba3 years ago
Positioning the brushes changes its footprint (how it comes into contact with the floor) and by extension, the patterns in which it moves. The frisbee is not perfectly flat, so moving the brushes is actually slightly changing the way it contacts the floor. If you leave them mildly loose on the track to reposition itself, you will start seeing different behaviors emerge.
ok thanks
nubabuba3 years ago
would it work the same if you just glued the brushes to the frisbee?
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