My twins and I both like LEGO, and LEDs. I figured I’d make some simple LED street lights that we could use to build a LEGO scenery.

I used a 2×4 LEGO plate with holes, and two 5mm LEDs with a wide light beam. The LEDs fit perfectly in the LEGO brick. A 100 Ω resistor allows the LEDs to be powered by 5V.

2×4 LEGO brick with two 5mm LEDs and resistors
2×4 LEGO brick with two 5mm LEDs and resistors
2×4 LEGO brick with two 5mm LEDs, front
2×4 LEGO brick with two 5mm LEDs, front

For the actual pole I used a LEGO satellite dish, mounted to a railway rail using a LEGO hinge. The thin wire is wrapped around the rail.

LEGO railway rail with LED street light
LEGO railway rail with LED street light

It was quick and easy to make, I didn’t have to destroy, or buy, any LEGO bricks. Now I just need to make some more, and find the time to make a LEGO city scene with the kids 😃

LEGO street light
LEGO street light

Below is a video of the street light being controlled by a Wemos microcontroller, together with some traffic lights.

And here are the electronics parts I used for the street light:

  • 2 × LED 5mm clear, White (wide), 3.4V, 20mA, 14.000mcd, 40°
  • 2 × Resistor, carbon film, 0.25W, 100 Ω, 5%
  • 1 × Straight pin header, M/F crimp pins, 1x2, 2.54mm
  • 0.5 m Wire, stranded, 2-cores, 0.13mm2 (26 AWG), Red/Black