Picture of Integrating LEDs with fischertechnik
This instructable describes how to integrate LEDs with fischertechnik elements!

My original vision was to create a mechanical video game that would light up LEDs. Then I started tinkering with fischertechnik's Eco Power kit (#57485) and realized that my first step would be a simple explaination of how to use LEDs with fischertechnik models.

I play with different educational manipulatives for a living. (Visit and Over the years I have built different models using all sorts of toys, and I have created many different electronic based devices that use LEDs.
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Step 1: Collect the Parts

Picture of Collect the Parts
The fischertechnik elements are available from a range of kits available from ebay, Craig's List, or fischertechnik retailers. Elements can be purchased individually from

I limited myself to the Eco Power kit (#57485).

The List:

1 Green fischertechnik Plug
1 Red fischertechnik Plug
1 Small Screwdriver

Step 2: Loosen Screws

Picture of Loosen Screws
Unscrew the tiny screws located in the plugs several turns, being careful not to drop the screws. They are TINY! Once they hit the floor, you will have a difficult time finding them. I recommend loosening them just enough to insert the LED leads.

Step 3: Insert and Tighten Screws

Picture of Insert and Tighten Screws
Insert the positive lead into the Red Plug, and tighten the screw so that the lead is fixed in place. Insert the negative lead into the Green Plug, and tighten its screw.

Step 4: Integrate!

Picture of Integrate!
With the fischertechnik plugs attached, you can integrate the LED into a variety of models. This one is a simple belt-driven generator using elements from the Eco Power kit.

You are ready to integrate LEDs in any number of ways!
geo bruce3 years ago
You should use an resistor in series so the current is limited and u can use it with the interface
simple but increase views
dsman1952767 years ago
nice! my dad has done that.
ftking_83702 (author)  dsman1952767 years ago
Thank you. Up until the 1990s, LEGO's electric plugs were very similar to fischertechnik. Then they went to a new 9 v system and changed the connectors. You can still integrate LEGO electronics with nonLEGO elements, but you have to cut up leashes to do it. I like the fischertechnik system because there is no cutting. You can add plugs onto the leads of most electronic components.
The connectors are 2x2 plates with a slot replacing two (2) studs.
yea its great. all you have to do is put the two plugs on the end and put the small scrues on. ths great because it make any thing possibal( like my rubix cube solver i am working on)
Cool. Another awesome Instructable. How do you know so much?!
ftking_83702 (author)  GorillazMiko7 years ago
Thank you. I have spent years working in afterschool environments (like the Boys and Girls Club) helping students explore mechanical engineering and robotics. I have used most toy contructives. I think fischertechnik is an awesome manip! students!