My husband decided to go see his friend at his automobile shop.  We couldn’t resist access to some really nice equipment so he and his friend cut out the part of a shelf on which the heat sink holding the LEDs will be placed.

 

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I discussed the design of the LEDs in a previous post.

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One thing I noticed about the LED connectors – the two I bought most recently from Digikey (part # 0688014084 @ $1.39) had the nice, thick wire to solder together.  The earlier connector did not (part # 0688014146 1 @ $.97) Yet they are both called “PICO-EZMATE HARNESS FOR VERO 6”.  But WOW! A $.31 price premium for the thick wires is a bit much!

I marked the location to place the LEDs on the heat sink based on my design in Fusion 360:

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I then cleaned the heat sink with hydrogen peroxide.

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The BoM for this part:

Category Qty MFG Dist MFG_Part Dist Part 1_piece Tax Shipping Handling Cost
COB 3 Vero18 Digikey BXRC-35E4000-D-73 976-1421-ND $10.29 9.50%     $33.80
PICO-EZMATE HARNESS FOR VERO 6″ 2 Molex Digikey 688014084 WM9594-ND $1.39 9.50%     $3.04
PICO-EZMATE HARNESS FOR VERO 6″ 1 Molex Digikey 688014146 WM9591-ND $0.97 9.50% $3.21   $4.27
Heat Sink 1 Heatsinkusa Heatsinkusa.com 20″ x 7.984   $28.80   $18.77 $5 $52.57
Constant current/power 1 Mean Well Mouser ELG-100-C1050A 709-ELG100-C1050A $35.34   $7.99   $43.33

I got to wiring the LEDs up and then stopped for the day.

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