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.
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.
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 😃
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