Our friends at Brown Dog Gadgets have their own line of Lego®-compatible, Arduino®-based products called Crazy Circuits! 

Combine the power of Arduino with Squishy Circuits in the Crazy Circuits With Squishy Circuits kit. The included Touch Board provides users with the ability to turn the included Squishy Circuits Dough into interactive programming projects. Create your own programs or use one of the many online guides or tutorials. Make your own dough based lighting and sound system or even your own dough based game controller! Crazy Circuits parts are compatible with LEGO and similar brick building systems. Crazy Circuits parts come 100% ready to go out of the box, which means no soldering or preparation required.

Our favorite projects to use with Squishy Circuits are:
Squishy Sound
Squishy Lights and Sound

This kit covers topics such as circuitry, programming, logic, design, sew-able technology, art, and design. Detailed directions, project guides, educational resources, and videos can be found in our online database.

Includes:

• Crazy Circuits Chips
  • Touch Board and USB Cable
  • Five Jumbo 10mm LEDs (Red, Amber, Green, Blue, White)
  • Piezoelectric Speaker
• Squishy Circuits™ Conductive Dough - 6 Pack
• Conductive Nylon Tape - ⅛ inch wide, 16 feet
• Five Alligator Clips
• LEGO™ Baseplate (8x16 studs)
• Plastic Organizer
• Resistor Holder