Gather the materials labeled for the electronic gripper from the Bill of Materials page and a downloadable file located in the Downloads tab. Fabrication the electronic gripper involves the following steps:
1. Making repositionable cardboard bases for each finger (below)
2. Connecting motor and pulley to the fingers
3. Attaching electronic components to the pegboard
4. Placing and connecting fingers to integrate the mechanical and electronics
Step 1: Making repositionable cardboard bases for each finger
Print the 'FingerBaseTemplate.pdf' on letter size paper and using the paste glue, adhere the paper to cardboard.
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Students have the option of choosing one of two varying angles for the finger base. Once this is chosen, cut out the corresponding template using scissors or a craft knife. The holes within the template can be hole punched using the punch purchased for the SDM finger activity.
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Note: If the provided templates do not have the angle that is required for a specific design, these can be customized to increase or decrease the angles of the base.
Cut the cardboard according to the template using craft knife.
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Fold the card board into a triangle as shown with the tabs folding out and down from the sides, as shown to make a prism. Apply glue from a gun liberally to make the base firm. Be careful not to hot glue the base to the surface you are gluing on.
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Insert one of the SDM fingers as shown within the base. Secure the finger through the punched holes using two zip ties. Place a screw through the bottom of the base sticking outward to allow for attachment from the bases to the pegboard.
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Once the bases are attached the finger is now ready to be placed anywhere on the pegboard with the help of the screw at the bottom. This process can be repeated for as many fingers as students would like to test.
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