STEM LEGO Compatible Stop And Go Kit

We’ve created a simple DIY solder kit for anyone that wants to learn to solder. Our Stop And Go solder kit is perfect to encourage STEM (science, technology, engineering, and mathematics) education for kids in 5th grade and older.

Check it out!

20150423_1383  FrontpageStopandGo

Make this stoplight to learn a little about soldering and play.

Source files


Stop and Go Kit v1

This is a soldering kit that you build yourself! The holes on the base of the stop-and-go light are LEGO compatible so you can build this kit into your various brick projects. You are welcome to create a derivative of this kit as long as it abides by the open source hardware definition.

This kit cycles through a red, yellow, and green LED from an ATtiny85. The code is written in Arduino.

This kit assumes you know how to solder. If not, there are plenty of online tutorials on how to solder. The kit is fairly quick to put together, roughly 10 minutes, and the chip has been programmed for you!

Materials and tools:

Here are the parts you’ll need to get stared:

3 LEDs (with a max current of 20mA)

1 220-ohm Resistor

2 47-ohm Resistors

1 ATtiny85

1 battery holder

1 3v battery

1 switch

Here are the tools you’ll need to get stared:

Soldering Iron, Solder and Wire Clippers


The Stop and Go Kit is an open source hardware product and follows the open source hardware definition.

The license on the source files for the Stop and Go Kit is CC-BY-SA

Distributed as-is; no warranty given. Not suitable for people who might eat electronics.

LEGO®  is a trademark of the LEGO® Group, which does not sponsor, authorize or endorse this web site.