Projects

2-4. Install GrabbE’s Pinchers and Mouth

Follow These Steps

1. Gear Up the First Pincher

Let’s get started by laying out all your parts just like in photo 1! Check the materials list to make sure you’ve got everything you need.

Now grab a pincher gear (look closely to identify which pincher to attach here) and press it onto the shaft of your 180-degree servo motor and make sure it’s curving inward. Your monster’s about to get grabby!

2. Attach the Second Pincher

Next up, grab your second pincher!

Line up the hole in the middle of the pincher with the hole in your base.

Now take the short bolt and push it through the center of the pincher from the front of the base, all the way through to the back.

Screw on the nut from the other side to keep that pincher nice and snug. Tight and tidy, just the way GrabbE likes it!

3. Check Your Build & Add the Makey:bit

Here’s what your GrabbE should look like so far. Check out the photo on the left!

Now’s the perfect time to snap your Makey:bit back into place.

In the next step, you’ll be adding the mouth, and it needs to open and close right on top of that Makey:bit.

4. Snap On the Mouth

First things first, make sure your pinchers are closed! That way, your monster’s mouth move just right.

Now, just like you did with GabbE, line up the mouth with the pincher gears on your monster… then snap it into place.

Gently open and close GrabbE’s pinchers with your hands to see the mouth move too! Pretty cool, right? Your monster’s almost ready for action!

SEE IT IN ACTION

Materials:

1 x Base with stand, 180-degree servo, ball roller, and side wheels already installed
1 x Set of 2 3D printed pinchers
1 x 3D printed mouth
1 x Nylon bolt (short)
1 x Nylon nut