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MakerGear M2: Better Lighting, Redux

A surplus haul of 24 V / 150 mA white LED panels arrived:

LED Panel - 24 V 150 mA

LED Panel – 24 V 150 mA

I wired a pair to a 24 V wall wart and stuck them under the M2’s bridge supporting the X stage:

LED Panel - on M2 Gantry

LED Panel – on M2 Gantry

I thought about epoxying them in place to get better heatsinking to the metal bridge. The ever-trustworthy description said the big copper baseplate meant the panels didn’t need any heatsinking, so I used tapeless sticky and will hope for the best. Should the sticky give out, then I’ll use epoxy.

They’re much better than the previous white LED strip, although it’s tough to tell in the pictures. The chain mail armor appears under the new lights; some older pictures will creep in from time to time.

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  1. #1 by Red County Pete on 2014-12-12 - 10:23

    I’m quite impressed with the LEDs now. We put some in fixtures that are hard to swap (bedrooms, mostly), but we’re still working off the huge supply of CFLs before we go all the way. I did a PV lighting system in the garage, and to keep the power load down, all the lights are LEDs. Full lighting (8 “bulbs”) costs 60W, which means I can get away with a 140W panel and a group 24 deep cycle battery–at least when we don’t get a week’s worth of cloud cover. [sigh]

    Still need to do a remote switch for the inverter to drop the standby load to near zero, but first light was promising.

    • #2 by Ed on 2014-12-12 - 20:06

      Those emitters knock the socks off the cheap LED strip from the usual eBay suspects, which isn’t surprising: they dissipate nearly half a watt each. That big copper PCB gets pleasantly warm against the M2’s steel frame.

      A set of 12 V / 300 mA panels (same LEDs in 4×2 series-parallel, not 8×1 series) will brighten up the Forester’s rear cargo area. Right now, it has one crappy incandescent bulb behind a stylin’ smoke-gray plastic lens that’s got to go. I’m still pondering how to mount ’em with a bit of heatsink sticking out..

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