Picture of The Marvelous LED HypnoFrog
1 - 2 HypnoFrog.JPG
This fun and easy to make desk toy was inspired by the Hypnotoad from the TV series FuturamaThe Marvelous LED HynoFrog uses slow color changing LEDs to create a mesmerizing effect.  The Marvelous LED HypnoFrog employs a magnetic reed switch to turn it on and off: when the frog is placed on top of a magnet, the eyes will illuminate and start changing colors; when removed it will stop.

Step 1: Parts List

Picture of Parts List
2 - 2 Parts List.JPG
The following parts are needed to make The Marvelous LED HypnoFrog:

Hollow soft rubber toy frog (the one I used was a Toysmith "Frog Squirter" that cost $3 at a local toy store)

  1. Two slow color changing LEDs (available from eBay. I got mine from eBay seller "bestshop2008hk")
  2. Normally open magnetic reed switch (I obtained mine from Jameco Electronics. The switches are part number 171872 and cost $0.85 each)
  3. 560 ohm 1/2 watt resistor (available from RadioShack or other electronics suppliers)
  4. 9 volt battery clip (available from RadioShack or other electronics suppliers)
  5. 9 volt battery
  6. Red and black very flexible thin wire (6" each)
  7. Black electrical tape
  8. Heat shrink tubing (optional)
  1. Soldering iron and solder
  2. Wire cutters / wire strippers
  3. Box cutter or Xacto knife
  4. Awl or other sharp point tool

This instructable is-HYPNO TOAD IS ALMIGHTY!
fantomzed4 years ago
Oh hey guys hows this instruc- ALL GLORY TO THE HYPNOFROG
moogbeatz994 years ago
hey just a suggestion, but maybe for the next one, leave the eyes closed and hot glue the LED in the little pocket they make, so it diffuses the light?
moogbeatz994 years ago
its like a surgery lol...."i will now make a 1mm incision in the frogs abdomen so i may insert a 9volt battery" [add awesome british accent]
lemonie4 years ago

I really like this.
"All glory to the Hypno-toad!"

They show Futurama in the UK?


craig3 lemonie4 years ago
Damn, you beat me to it.
The only way this could be cooler is with a small speaker that plays the Hypno-toad sound effect...then broadcasts itself on public television and destroys all other television shows.

All glory to the Hypno-toad!

P.S. The cake is a lie
you beat me to it
miniclipper4 years ago
dude i believe its hypno toad from futurama.
Dude, I'm pretty sure that's what he's riffing off of. This here is a frog.