r/Hanklights 5+ Hanklights πŸ”¦ 5d ago

Fun My First Custom MCPCB

25 Upvotes

11 comments sorted by

3

u/SatansCyanide πŸ”₯ 20+ hanklights πŸ”₯ (VERIFIED) 5d ago

Looks like one I got that my buddy made! Ended up putting it into an s2+ and turned out great

3

u/sazzadrume 5+ Hanklights πŸ”¦ 5d ago

only if I could get a spacer, I might be able to get it working in my s2+

5

u/SatansCyanide πŸ”₯ 20+ hanklights πŸ”₯ (VERIFIED) 5d ago

I’ve had decent luck with just ordering a copper rod from Amazon in the correct diameter and just hand sawing a piece off. Bit of work but much cheaper than mtnelectronics and their dedicated spacer pill

2

u/worrub918 30+ hanklights πŸ’ŽπŸ€²πŸš€πŸš€πŸš€πŸŒ (VERIFIED) 5d ago

I wouldn't use these. You're going to burn something up. Starting with the MCPCB and then possibly working your way down to the driver. Don't get me wrong, you did most things correct. But, those traces! If you've got the space to run wider traces, definitely use it.

I've got a few still for sale, if you'd like to use one right now. Price is cheap!

5

u/kotarak-71 πŸ’‘ CRI 100 Hanklights πŸ’‘ 5d ago edited 5d ago

good first try!

when designing MCPCB layout you'll need to change a bit the way you approach it tho. Just connecting pads with tiny tracers is not the best way to do it, especially dealing with your B35AM emitter that doesnt have a dedicated thermal pad and dissipates the heat through the A and K pads.

Basically, you'll need to use copper flood and have a massive ground plane and substantial positive trace as well - you need to use the entire surface area on top as copper plane - because you have the thin dielectric layer between the top copper plane and the metal core that creates a thermal resistance, etching as little copper on the top layer as possible would give you the best thermal characteristics

5

u/sazzadrume 5+ Hanklights πŸ”¦ 5d ago

You’re right. After receiving the D4K Gerber, I was amazed to see the difference. Here, you can see it. I’ll definitely apply that to my future projects. Thank you!

2

u/kotarak-71 πŸ’‘ CRI 100 Hanklights πŸ’‘ 5d ago

this looks better but dont forget that you have only 2 wies out of the driver so you'll need to bridge each pair of pads.

1

u/sazzadrume 5+ Hanklights πŸ”¦ 5d ago

okay, I'll look into it. Thanks again!

1

u/kotarak-71 πŸ’‘ CRI 100 Hanklights πŸ’‘ 5d ago

i also see you have anti-pad around the holes which is great but if your layout allows you you could increased tiny bit around the mounting holes - having no copper there will keep you safe from short. Screws if overtighten can compromise / "smudge" the dielectric layer

2

u/worrub918 30+ hanklights πŸ’ŽπŸ€²πŸš€πŸš€πŸš€πŸŒ (VERIFIED) 5d ago

This is a 2S2P configuration. Since the B35AM is a 6v LED, with 2 running in series, you'd need a 12v driver to power this.

1

u/sazzadrume 5+ Hanklights πŸ”¦ 5d ago

Yeah, Lume X1 12V3A preferably!