The Jell-O Light




Introduction: The Jell-O Light

About: see site.

After seeing some great instructables on LED use, I decided to try one of my own. I have little electronics experience and have only soldered twice (once 7 years ago and once last night), so I am no expert. This is a fun beginners project that most kids could handle.

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Step 1: Equipment Needed

1. Jell-O Box
2. 5mm LED (~3.0v, mine were 2.5v)
3. 3v watch battery - from dollar store, so $0.33 each
4. wire - I used extra wire I had
5 soldering iron with solder
6. simple on/off switch - the most expensive item
7. electrical tape
8. clear tape
9. box knife

Cost: ~$6.00 (would be less, but I purchased in small numbers)

Step 2: Prepping the Box

Open the Jell-O box from one end and remove Jell-O bag. Tape that end with clear packing tape. Using a box knife, cut out a flap as pictured below. Leave about 1/8" overhang so the flap will stay closed.

Step 3: Soldering and Hole Poking

Solder the wires, switch and LED together. First solder the wires to the battery, then test with multimeter to make sure the connection is good. Then solder to the LED.

I have used electrical tape on the battery. I tried to solder directly to the battery, it didn't work and the battery got very hot. I think it's not safe to apply heat directly to a battery. You may have to flip the battery to make sure that you have the battery polarity matched with the LED.

You will then poke holes for the LED and Switch. I used the box knife to make X cuts then used a Phillips screw driver to clean the holed out. On the switch side, you want to be sure not to make the hole too big. The nut on the switch needs something to grab onto.

Step 4: Finished

If you did everything correctly, you now have a working Jell-O Light. This red light would be useful for astronomy chart reading and other night related activities.

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    7 Discussions


    9 years ago on Step 2

    Make it a family project - someone could make the jello while you're building the light, and you can all eat the jello when the project is complete!


    10 years ago on Introduction

    A nice, simple project. Great for parents (like myself) to try with their kids. What I really would have liked to see was an LED stuck at the base of the jelly! Now that would have been awesome!


    10 years ago on Introduction

    What wire is that? It's either heavy-core or heavy on the insulation? L


    Reply 10 years ago on Introduction

    The wire is way to heavy for this project, but it was there, so I used it. I think its 14 gauge.


    Reply 10 years ago on Introduction

    It's not really "too heavy", "unnecessarily heavy" perhaps, but I was interested so thanks for the reply. L