Introduction: Automated Climbing Bear

Picture of Automated Climbing Bear

My wife, Annelle, and I discovered this "artist made" climbing bear toy at the artists' shop (an interesting place to look around and talk to the artists) in Murphy, North Carolina.


This hand made bear (signed and dated by the artist--costs $12.00 in the shop) is operated by alternately pulling the left and right ropes--then releasing the ropes to let the bear fall. I wanted to add this toy to Santa's Shop (Christmas window display placed in local store window), so the automation project was born.

Step 1: Parts

Picture of Parts

First, you need a climbing bear. This is an old folk toy design and similar versions are found in many cultures of the world. This particular toy was hand made by Phil Baerreis in North Carolina.

Climbing Bear--Gallery 26 (http://www.gallery26.org) Murphy, NC about $12.00 plus shipping

(2) Servo motors --Hitec hs311 or similar

(1) Arduino Uno

(4) AA batteries and battery holder

Ten inches of wood 1" x 2"

Plywood base

Screws

2-56 x 1 1/4 machine screws and nuts

3d printed parts

Step 2:

Picture of

Mount a 5 inch long 1" x 2" wood piece into the base support and secure to the base.

Step 3:

Picture of

Fasten the servo motor to the 1" x 2" using 2-56 screws and nuts.

Step 4:

Picture of

Add a second motor, eight inches away from the first (measured center of 1" x 2" to center of second 1" x 2").

Step 5:

Picture of

Add arms to servo motors.

Step 6:

Picture of

Where to tie the knots and mount the bear is a "fiddeley" thing, depending on your situation. To climb, the left and right ropes must always be in tension (if one gets loose, the bear will slip on that side).

When I had everything working on a test rig, I knew that the "real setup" would have to be adjustable--or I would be forever reworking the knots that hold the bear. My heavy duty plastic screw (with a slot for the rope) can go up or down a couple of inches to adjust for rope tension.

Step 7:

This is my Arduino sketch to control the servo motors (wire according to the schematic in step #1).

The numbers in the sketch work for my situation, but they will have to be adjusted to fit your servo position and knot length.

Step 8:

Picture of

The base and the top have to be secured because some tension is required on the ropes.

Step 9:

Picture of

After each "pull" of a servo motor, I allowed a bit of "rest" time so that the ropes would not swing wildly (and possibly turn around).

Step 10:

Picture of

At the top of the climb, I held the bear for a couple of seconds before releasing the ropes and letting him fall to the base.

Comments

gm280 (author)2017-06-05

I like it. Nice project.

DIY Hacks and How Tos (author)2017-06-04

Fun toy.

About This Instructable

962views

12favorites

License:

Bio: I am an author and a maker. My current project is Santa's Shop. I'm working on a science fiction type book--more later. @EngineerRigsby
More by MikeTheMaker:Santa's Shop 2017, the TrainSnowflake Gear WreathHappy Gear Table
Add instructable to: