Emil's Projects

OpenHardware & OpenSource

Entries tagged "illumination".

Desktop LED Lamp 2nd April 2014
Assembled Desktop LampDXF design file (QCAD)

Since I haven't found any suitable and reasonably priced LED lamp on the market I've decided to build my own. Bellow is the price breakdown of the components. I'm not counting some 10h of labour to machine parts and assemble the lamp.

Aluminium Radiator (salvaged from old GameCube)x1$0
Aluminium Machined Joining Part (from 12mm plate)x1$1
9W LED COB Chip 27-32V (40mm)x2$5
300mA LED Driver (9-12W)x2$5
Aluminium Case 30*88*120mmx1$10
M5 Allen Bolt Cap Screwx1$1
Rocker Switchesx2$1
30cm Carbon Fiber Tubes (4mm ID, 6mm OD)x2$7
1m AVG20 Silicon Wire (red+black)x2$2
3m Mains Cable (salvaged from old appliance)x1$0
Nylon 20mm Rod (90mm long)x1$2
Cabinet Hingex1$1
Lead Ballast (Ingots) x1$2
M4×10mm Sunk Screwsx4$1
Tapered Screwsx8$1
M4×5mm Grub Screwsx4$1

The lamp is extremely bright, it exceeds 5000 Lux on the desk surface with both LEDs turned on while it only draws 20W of power. The carbon tubes can bend between 45 an 90 degrees to adjust the distance to the desk surface. One (small) disadvantage is that the radiator gets quite hot and you can burn your hand or forehead if you touch it. I've measured 48 degC and 62 degC with one and both LEDs turned on.

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1 comments. Tags: illumination, led.

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