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Author:randofo Randy Sarafan loves you!I am the Technology Editor here at Instructables. I am also the author of the books 'Simple Bots,' and '62 Projects to Make with a Dead Computer'.Subscribing to me = fun and excitement!
Intro: Simple Bots: Skitter
Skitter Bot came into this world as result of a chain reaction of exploded of cosmic energy. By current estimates, this chain reaction took roughly 13.7 billion years tocomplete. When put into such context, it becomes quite clear just how long it takes for near-perfect walking scrub brush bot to come into being.
Do not be fooled. Scrub Bot was not the simple sort of bot that materializes overnight when I zip tie a bunch of scrub brushes together. No! There was an ineffablecosmic plan that led up to this bot's creation, going back well beyond the day when man, through genetic mutation, first evolved the ability to manufacture zip ties andscrub brushes. This bot is a bona fide cosmic child.
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Step 1: Go get stuffYou will need:
(x1) continuous rotation servo modified for direct drive**(x1) 3 x AA battery holder(x1) DPDT toggle switch(x4) scrub brushes(x1) small plastic container(x1) ballpoint pen(x1) 1-1/2" x 3/8" corner brace(x1) assorted zip ties
Step 10: Measure and drillTake the two remaining scrubbers and measure 1" in from the edge and make a mark.
Drill a 1/8" hole down through the handle where you made this mark.
Step 11: Attach the legsTurn the plastic container upside down. Mark, drill, and zip tie the two remaining scrub brushes to the front of the plastic container such that they meet at a 90 degreeangle, and point evenly downwards towards the direction of the plastic container opening.
In other words, make two even-length front legs for your bot.
Step 12: SwitchDrill a 1/4" centered hole near the other short edge of the plastic container lid.
Pass the DPDT switch through so that the shaft is pointing at the scrubber legs and then fasten it on with a nut.
Step 13: Wire it upWire together the opposite corners of the DPDT switch.
Solder the red battery wire to one of the center DPDT switch pins and the black battery wire to the other.
Turn the switch so that there are only two pins facing you (as opposed to three). Solder the black motor wire to the DPDT pin closest to you on the right. Solder the redmotor wire to the other pin on the left.
Note: If, when you power it up, the switch isn't making the motor move back and forth, remove the batteries. Next, detach the motor wires and reverse the switch pinsthey were connected to.
Step 15: GlueMake certain the switch is positioned between the two scrubbers.
Fill the pen cap with hot glue and quickly slide it onto the switch's shaft. Be careful not to get any hot glue inside the switch. This could prevent it from working.
M.C. Langer says: Sep 10, 2012. 6:48 PM REPLYAwesome! I just made my version of your Walker (photos soon). This will be the next Randofo's Simplebot I will to make! :-) Thanks gor those amazingprojects!
mikeasaurus says: Sep 10, 2012. 5:02 PM REPLYYou've got some mighty clean floors with a few of these around
(Also, the broom in the video looks sad not being able to participate)