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1.1

Major VersionM

by Pete Prodoehl

Introduction

Make an angry scorpion that stings if you touch it!

Video Overview

Featured Document

  1. Print the template.
    • Print the template.

    • Cut the parts out. You may find it easiest to use a craft knife or small scissors for the cutouts.

    • Make sure the scale is at 100% when you print the template.

  2. Prefold the creases on the body — this will make it easier to put together later on.
    • Prefold the creases on the body — this will make it easier to put together later on.

  3. Position the servo on the body.
    • Position the servo on the body.

    • You want the servo axle to be roughly aligned with the corner of the body as shown.

    • You can also use the markings on the template to position the servo.

  4. Fold the servo holder. Glue the servo holder so it holds the servo in position.
    • Fold the servo holder.

    • Glue the servo holder so it holds the servo in position.

    • You only need to put glue on the tabs where the holder attaches to the body, not on the servo itself.

    • Thread the servo cable through the cutout in the body.

  5. Use a needle to poke a hole through the dot marked on the template. Fold and glue the sides of the body. Fold and glue the sides of the body.
    • Use a needle to poke a hole through the dot marked on the template.

    • Fold and glue the sides of the body.

  6. Fold and glue the back tab of the body. Fold and glue the back tab of the body.
    • Fold and glue the back tab of the body.

  7. Glue one side of the stinger onto the tail as shown.
    • Glue one side of the stinger onto the tail as shown.

    • Make sure you're gluing to the end of the tail without the tab.

  8. Cut a piece of Maker Tape that's a few inches longer than the tail. Attach the Maker Tip to the tip of the stinger.
    • Cut a piece of Maker Tape that's a few inches longer than the tail.

    • Attach the Maker Tip to the tip of the stinger.

    • Wrap the tape around so only a tiny bit is visible on the outside (the side without the template markings), and the rest of it is on the inside of the tail.

    • I used 1/4" wide Maker Tape for the tail, but 1/8" should work fine as well, and will be necessary later on.

  9. Tape the rest of the Maker Tape along the length of the tail as shown. At the very end, fold over about an inch of tape so it overlaps onto the tab on the front side of the tail. At the very end, fold over about an inch of tape so it overlaps onto the tab on the front side of the tail.
    • Tape the rest of the Maker Tape along the length of the tail as shown.

    • At the very end, fold over about an inch of tape so it overlaps onto the tab on the front side of the tail.

  10. Prefold the creases on the tail. Fold and glue the first section of the tail to make a triangular shape as shown. Fold and glue the first section of the tail to make a triangular shape as shown.
    • Prefold the creases on the tail.

    • Fold and glue the first section of the tail to make a triangular shape as shown.

  11. Fold and glue the rest of the tail sections. Fold and glue the rest of the tail sections.
    • Fold and glue the rest of the tail sections.

  12. Glue the other half of the stinger on. The two pieces won't glue flat, so you only need to put glue where marked in the picture. You can also add a bit more Maker Tape to the stinger to make both sides of it conductive. You can also add a bit more Maker Tape to the stinger to make both sides of it conductive.
    • Glue the other half of the stinger on. The two pieces won't glue flat, so you only need to put glue where marked in the picture.

    • You can also add a bit more Maker Tape to the stinger to make both sides of it conductive.

  13. Glue the tab on the tail to the bottom of the body to attach it. Glue the tab on the tail to the bottom of the body to attach it.
    • Glue the tab on the tail to the bottom of the body to attach it.

  14. Cut a piece of string a bit longer than the tail, and thread it all the way through. Tape one end of the string to the inside of the stinger.
    • Cut a piece of string a bit longer than the tail, and thread it all the way through.

    • Tape one end of the string to the inside of the stinger.

  15. Attach the servo to the Bit Board as shown.
    • Attach the servo to the Bit Board as shown.

    • The orange wire should be closest to the Pin 1 label on the board.

  16. Upload the Code from here: ScorpioBot
    • Push the buttons to test that the servo works.

    • Once you know which direction the axle on the servo is oriented, attach the LEGO axle mount. (You want it oriented so it moves the way shown in the video).

  17. Tie the string to the end of the LEGO Beam in such a way that it is lightly tensioned when the mount faces towards the tail, and tight enough to pull the tail up when the beam points away from the tail. Tie the string to the end of the LEGO Beam in such a way that it is lightly tensioned when the mount faces towards the tail, and tight enough to pull the tail up when the beam points away from the tail.
    • Tie the string to the end of the LEGO Beam in such a way that it is lightly tensioned when the mount faces towards the tail, and tight enough to pull the tail up when the beam points away from the tail.

    • Test that the tail pulls up. If it doesn't pull up all the way, you may need to tie the string tighter or shorten it a bit.

  18. Glue the back on to ScorpioBot, sealing the body up. Glue the back on to ScorpioBot, sealing the body up. Glue the back on to ScorpioBot, sealing the body up.
    • Glue the back on to ScorpioBot, sealing the body up.

  19. Glue the legs to the bottom of ScorpioBot's body. Glue the legs to the bottom of ScorpioBot's body.
    • Glue the legs to the bottom of ScorpioBot's body.

  20. Fold the legs to make them more insect-like. Fold the legs to make them more insect-like.
    • Fold the legs to make them more insect-like.

  21. Cut two short pieces of pipe cleaner. Fold the ends of the pipe cleaner over (this is so the tape has more of a grip area and keeps the pipe cleaner from turning). Tape one end of the pipe cleaner to the claw, and the other end to the bottom of the body.
    • Cut two short pieces of pipe cleaner.

    • Fold the ends of the pipe cleaner over (this is so the tape has more of a grip area and keeps the pipe cleaner from turning).

    • Tape one end of the pipe cleaner to the claw, and the other end to the bottom of the body.

    • Do the same with the other claw.

  22. Give ScorpioBot a face! Expressive eyes can help convey emotions!
    • Give ScorpioBot a face!

    • Expressive eyes can help convey emotions!

  23. Connect the Maker Tape on the bottom of ScorpioBot to Pin 0 on the Bit Board with a piece of 1/8" wide Maker Tape. We looped the Maker Tape around the holes in the Bit Board, like in Step 4 of this project. You can use a LEGO baseplate instead of looping the Maker Tape.
    • Connect the Maker Tape on the bottom of ScorpioBot to Pin 0 on the Bit Board with a piece of 1/8" wide Maker Tape.

    • We looped the Maker Tape around the holes in the Bit Board, like in Step 4 of this project.

    • You can use a LEGO baseplate instead of looping the Maker Tape.

  24. Touch the GND pin on the Bit Board then touch ScorpioBot's stinger! I initially tried this with capacitive sensing (which doesn't require touching the GND pin), but found that the piece of Maker Tape I used was so long, that the capacitance of the tape itself affected the touch sensor!
    • Touch the GND pin on the Bit Board then touch ScorpioBot's stinger!

    • I initially tried this with capacitive sensing (which doesn't require touching the GND pin), but found that the piece of Maker Tape I used was so long, that the capacitance of the tape itself affected the touch sensor!

Finish Line

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Jasmine Florentine

Member since: 03/06/2021

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