Introduction: The Wolverine-scratcher 2000

This is the lead for building your very have wolverine-scratcher.

Merely prototypal things first-year, you'll be needing some materials:

- acces to one 3D-printing machine

- 1 "Arduino starter kit"

- acces to unitary computer which has "Arduino IDE" installed.

- 2 screws (4 mm in diameter)

- 1 screw (3 mm in diameter)

- 1 9-volt nattery

- 1 9-volt transcriber

- 1 handdrill (4 mm in diameter)

- 1 box full of old legos

Step 1: Getting Started - the Claw

Right away for the manufacturing of the actual claw you wish need a 3D-printer.

The file out which contains the 3D-model for the claw is attached to this step.

So only print the claw using the file and the first dance step is finshed.

Footfall 2: Setting Up the Machanism - Programming the Arduino

Now we are going to program the code for the arduino.

If you have experience with coding or with arduino, you tail hand over it a shot yourself.

If non, no worries, in the related to file is the inscribe you need.

The code must include the pursual:

It needs to react to the urge on of a button

Once the button is ironed, the hook needs to move forward victimisation the servo

Once the button is released, the claw inevitably to motivate rearward.

Nonmandatory:

If the button is hold down for a fixed amount of sentence, the claw needs to appease in the spread-eagle position.

If the claw is locked in the extended set back and the push button is bind down for a fixed amount of metre, the claw needs to get back to the starting position.

Step 3: Setting Dormy the Mechanism - Control system to the Claw

First you want to colligate a servo arm (4,5 curium) victimization a screw. If you don't have a servomechanism build up in this size, you can link up a smaller arm and extend it. For example by using lego or a piece of wood. (just drill two holes in IT, some on united sidelong of the bit and connect it to the servo subdivision using two screws) After this drill one hole connected the other pull of the servo arm (the side furthest off from the servo). In that kettle of fish you put a lego pin (simply lik in picture two). Afterwards associate a black Lego set bar (10 cm) and on the other side of the bar relate other lego( the Saami one you used in the beginning). The lego bar will not connect correctly to the 3D printed claw so you have to relate IT using rope operating theater ducttape. We victimised a rather cable (see ikon 3).

Maltreat 4: Mount Rising the Arduino

Connect the cables as seen in the picture. The only monumental part is that you have to use three seperate cables to relate the servo to the breadbord. You stimulate to connect the nonnegative cable to the 5 volt entrance connected the arduino. And you hae to join the subtraction cable to the ground captivate along the arduino. Connect the yellow cable to pin 6 (or whatever pin you accustomed control your button in your cipher). And connect matchless of the cables connected to the servomechanism to rowlock 3 (operating room some pin you exploited to control the servo in your code).

Footfall 5: Have At that place Be Light

In this step you relate the 9 volt battery to the arduino using an adapter.

Mistreat 6: The Inalterable Step - Pimping Your Hook

Ready to thoroughgoing your claw, you have to build a shell around all the electronics. This is the part where you are going to use your imagination. You can use legos, wood, unlifelike, plastic boxes. We used legos (and lots of them).

Congratulations, you like a sho have your own Claw!!!

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