Loki Head Design

I get lots of quesitons on how Loki’s Eyes are built and work.  Each eye is built as follows:

  • Start with a cheap flashlight.  Cut as needed to install a web camera (I used Logitech Webcam Pro for laptops).  Use “Household Goop” to secure it.
  • Mount 12 Blue LED’s in a ring around the flashlight.  See electronics section for how these are driven.
  • Mount a soup can over the LEDs.  Use Goop to secure it.
  • Put Surgical Tubing in the space between the flashlight and the soup can.
  • run the wires from the LEDs back to the controller card.
  • Do this again for the other eye, and mount the two flashlights together with aluminum.
  • Attach servos for the neck
  • Attach the controller card, run the wires down the neck, and put a cover over the controller.  Done!

Here are some pictures:

 

 

7 Responses to Loki Head Design

  1. adrian says:

    very impressive, i am just converting an old hero to on board pc. i know the work involved. very good work. very impressive and lots of hard work evident.

  2. Chris says:

    I posted a comment regarding the flashlights used elsewhere. Now i am wondering if you painted these flashlights? No matter I still cant seem to find the flashlights you used. All the end pieces are octagons and are either yellow or orange? PLease share.

    Chris

  3. Mohamed says:

    Which servos did you use for Loki and seeker and which servos do you thing will be nice to use for beginners

  4. Chris says:

    Can you elaborate a little bit on the blue leds you used for eye lighting. Did you use conventional through board LEDs or did you use the surface mount leds on a reel type? Thanks Chris

  5. Chris says:

    Can you elaborate a little bit on the blue leds you used for eyes. Did you use conventional through board LEDs or did you use the surface mount leds on a reel type? Thanks Chris

    • dshinsel says:

      Actually, I made a stiff wire in a circle to fit around the plastic flashlight, then soldered regular blue LEDs to it for the positive voltage for each LED. The other side of the LEDs I wired in groups and then ran the wire for each group to the board which has 2N222 transistors to supply ground. If I was to do it over today, I’d probably use a strip of programmable LEDs like they have at AdaFruit.

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