DIY 30W LED Work Lamp From a Discarded Street Light

I found a discarded street light head at a scrap yard and wanted to give it a new life instead of being shredded.

Re-use, re-purpose or re-invent. Do not just throw out stuff, see if you can use it in another way. The Earth Overshoot Day is something to take seriously.

The original lamp design is with 6 LED PCB strips sitting on a aluminium hexagon core for cooling. With reflectors for each LED. The driver is a high quality multipurpose use driver that has bus connections for intelligent lighting control.

The driver uses a Atmel AT90PWM316 controller. Besides being a regular AVR 8-bit Microcontroller with
16K Bytes In-System Programmable Flash, it has built-in Three 12-bit High Speed PSC (Power Stage Controllers). This is a controller built specifically for power supply designs. But still has the freedom of a regular freely programmable device.

In my rebuild version I am using the driver, LED strips, two aluminium panels from a base station amplifier and a piece of acrylic plastic from a LED computer monitor. Even screws are reused from teardown equipment.

Mads Barnkob

Electrician, programmer, experimenter and amateur scientist with experience in industry automation, programming and all kinds of high voltage generating electronics. Administrator of and the high voltage community forum

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