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This project was created for YuKonstruct's first Build Night.

YuKonstruct is the first makerspace in Canada's north. Our mission is to provide access to shared space, quality tools, available expertise, and a collaborative environment to help makers build anything!

This little flashlight that you can keep on your keychain was created in collaboration with licheness

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Step 1: Gather your materials

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You'll need:

  • LED
  • coin battery
  • small button
  • hot glue gun and glue sticks
  • needle and thread
  • scissors
  • small pliers
  • felt or duffle fabric
  • key ring
  • coin larger than your battery and pen to trace circles (optional)

Step 2: Cut the felt

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Cut out three felt circles about the size of a loonie (a Canadian $1 coin slightly larger than the battery).

In the middle of one circle, cut a 1/4" hole.

Step 3: Add the LED and battery

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Using small pliers, carefully bend the end of each LED lead (the metal ends) to make a half curl.

Place the battery on the felt circle (with the hole) sandwiching the battery and felt between the LED leads.

Place one lead on top of the felt and across the middle of the hole. The other lead lies directly on the battery. Keep positive-to-positive and negative-to-negative (longer lead is positive, look for + sign on battery). To confirm the polarity, test LED by pushing down on the felt side lead until it touches battery (the light should come on).

Using a glue gun, tack the LED lead (on the battery side) in place with a little bit of glue. The lead should lie across the middle of the battery and the glue should be closer to the curl end of the lead (away from the middle) so that it does not interfere with the switch.

Ismegordo9 months ago

WOW what a great little project, I think I will make this one with my Grandson over the next weekend or so. Thanks for the Clear instructions.

jmateos9 months ago
gracias por compartirlo!!!
akshaylals11 months ago

Be carefull. How did your left hand finger got hurt?or u simply stick it on ur hand

nodcah11 months ago

Very clever using the felt as a spring! It also looks fantastic! =)

samalert11 months ago

Those are so cute ! When i was small i used to have a similar keychain all covered in yellow rubber. I used to love that a lot, it reminded me of the same old days.

seamster11 months ago

Nice and simple! Great project for beginners to get their feet wet with LEDs. Thanks for sharing this!

thebear111 months ago

neat thanks for posting