Instructables

Simple Bots: Buck

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Just like a bull, a bronco, and a ninja, Buck has a lot of kick. With spring-loaded feet, this noisy little bot does a lot of stomping about. Everywhere Buck goes, commotion ensues. This keeps people on their toes, which is a good attribute for any bot to have.


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Step 1: Go get stuff

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You will need:

(x1) continuous rotation servo modified for direct drive**
(x1) 4" x 3" x 2" plastic container
(x1) 4 X AA battery holder
(x1) 5" cylindrical metal drawer pull (with two arms)
(x1) 8-32 x 2" bolt
(x3) 8-32 nut
(x2) 4-40 x 3/4" bolt
(x4) 4-40 nuts
(x2) 1/8" (inner diameter) x 1/2" plastic spacer
(x1) 3/4" to 1" extension spring
(x2) 4-40 x 1/4" nuts and bolts
(x1) Assorted zip ties

**Modify your servos for direct drive here

Step 2: Drill

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Drill two 1/8" holes opposite each other on the servo horn.

Step 3: Fasten

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Pass the 4-40 x 3/4" bolts up through the holes in the servo horn.

Thread a nut all the way down to fasten them in place.

Slide on the plastic spacer, and then screw on another nut to fasten this in place, as well.

Step 4: Mark

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Lay the drawer pull on its side and make a mark on the top surface 3" from one side of the handle.

Step 5:

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Drill a 3/16" hole through the handle in the spot that was marked.

Step 6: Spring

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Slide the spring down to the end of the 2" bolt. Fasten this firmly in place with a nut.

Thread another nut half way down the bolt.

Now, slide the bolt into the hole that was drilled in the drawer pull.

Fasten the bolt in place by threading on yet one more nut.

Step 7: Mark and Drill

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Turn the plastic container upside down. Measure 1/4" up from the container's lip and 2" in from the side of the container. Make a mark.

Make an identical mark mirrored on the opposite side of the plastic container.

Drill both of these marks with a 1/2" spade bit.
JuJer1 year ago
Or has that already been claimed
JuJer1 year ago
I love your bots your truly the father of simple bots
You should try some Sugru or rubber at the bottom for slightly more grip...
Where can I get those white plastic spacers? Thanks.
randofo (author)  TedRobotBuilder1 year ago
I got it at Ace Hardware.
I've always been a fan of your pics. But I see a slight fault for the first time. Your 'Go get stuff' image is a bit blurry (easier to pick faults than to do better I guess :-). But still AMAZING photography...

This bot reminds me of bull riding. A cool mod will be to make a bull shaped body with a cowboy on it :D
Lindie1 year ago
Cool!
you need to make one out of lead and turn it on when you leave for work in the morning.
randofo (author)  amandaghassaei1 year ago
The filming for this video resulted in some stopping from upstairs.
meanpc1 year ago
Your project photography is incredible
I love it! One day, I have to build one of your amazing simple bots!