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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

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.

Step 7: Vibrating motors

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Turn your fans into vibrating motors by cutting off some of the fan blades.

You should try to avoid making them evenly symmetrical by cutting off the fan blades in a different pattern on each fan. This will give it a little bit more of a unique mobility.

Step 8: Zip tie

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Zip tie the 9V battery between the two fans such that the fan brackets are facing inwards and the rotors are facing outwards, such that they can spin uninhibited.

Also, you may want to consider connecting them together in such a way that the wiring on each motor, is roughly across from each other.

If done right, the 9V battery should be held firmly in place and the motors should spin freely.

Trim off any excess zip tie bits when you are done.

Step 9: Wire it up

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Cut off the motor connectors. Strip back the wire insulation and twist together the red wires from both fans with the red wire from the battery connector. Do likewise with all of the black wires.

You may want to solder them and cover them with electrical tape for a more reliable connection.

Step 10: Drill more holes

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Drill a series of 8 holes such that you can later pass a zip tie through the frisbee and through each corner of the fan motor and then back through the frisbee.

Use your fan assembly as a guide for drilling the holes.

Step 11: Put it all together

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Zip tie each corner of the the fan assembly to the frisbee using the holes you drilled in Step 10. Trim off the excess zip ties when you are done.

Step 12: Get going

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Plug in the battery and you are ready to clean.

Placing the brushes in differing positions creates different patterns of motion.

Try experimenting.
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How much volt on your Computer fan?

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_kazune044 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

How much is this?

thanks a lot!
erwin.sevilla6 months ago

Except for the frisbee what other can i use?

erwin.sevilla6 months ago

where can i buy frisbee and adjustable tracks help for my science project i'm in the Philippines?

DhiruDhole2 years ago
hey brother where will i get adjustable tracks
randofo (author)  DhiruDhole2 years ago
I got mine from Ace Hardware. They are used for windows to allow them to open a little and lock in place.

I did not find it in Ace Hardware.

ade souza2 years 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/
damato324 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 damato323 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_693 years ago
Also, post a picture of your bot so we all can see!
randofo (author)  85_DaRkBlOod_693 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 dog3 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?
ayodeji3 years ago
can i use a vibrator motors found in mobile phones
randofo (author)  ayodeji3 years ago
Those are much too small. Try some of the motors inside of motorized back massagers.
jdseagull3 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)  jdseagull3 years ago
You can't easily reverse the polarity on computer fans. They are not designed to be reversible.
ShashankPH3 years ago
Instead of adjustable lid supports, can I use anything else
randofo (author)  ShashankPH3 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.
damato324 years ago
Here's my bot. This one doesn't move much at all. Any ideas why?
5948705178_96d892e8e3.jpg5948151439_226abf278d.jpg
randofo (author)  damato323 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.
ceeceemerto4 years ago
what happens if you only use one fan instead of two fans?
randofo (author)  ceeceemerto4 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.
ShashankPH4 years ago
Nice Thing but can I use 1 Computer Fan ?
sandchica4 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)  burnerjack014 years ago
I don't know. I haven't replaced the battery yet. So, at very least, an hour.
harkaran4 years ago
will dis work faster if i put 4 comp fans instead of 2 ?
Eman0124 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.
Eman0124 years ago
How can I make the rotation of the scrub faster?
Would a pager motor or two work instead of the fans?
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