2 - PCB Assembly


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Post Sat Dec 02, 2017 3:23 am

2 - PCB Assembly

Reserved.

Site Admin

Posts: 950

Joined: Tue Jul 24, 2012 8:05 pm

Post Sat Dec 02, 2017 3:31 am

Re: 2 - PCB Assembly

The PCB assembly is described in 2 stages, the first covers the majority of the components before first test and the second stage after it's attached to the levitation assembly, at which point you'll need to be much more careful of flying screwdrivers...

The exact order of assembly will depend on the preference of the builder but convention is to fit the resistors/diodes first followed by capacitors, transistors and finally the ICs, USB socket/power conectors in that order. Use the thin solder for the small components and the thick solder for joining the PCB to the levitation module.

Starting with the resistors, take the 2x 680R (blue grey brown) resistors and fit them into the locations marked R16 and R17:

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Site Admin

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Post Sat Dec 02, 2017 5:17 am

Re: 2 - PCB Assembly

Take 4x 24k (red yellow orange) resistors and fit them into the locations marked R9,18, 19 and R23:

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Post Sat Dec 02, 2017 5:18 am

Re: 2 - PCB Assembly

Now the 2x 1r1 (brown black gold gold) resistors, fit them into the locations marked R13 and R14:

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Post Sat Dec 02, 2017 5:20 am

Re: 2 - PCB Assembly

And the 3x 91R (White brown black black) resistors, fit them into the locations marked R11,15 and R22:

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Post Sat Dec 02, 2017 5:22 am

Re: 2 - PCB Assembly

For now you just need 2x 5k6 (green blue red, the third is used later) resistors, fit them into the locations marked R10 and C12 (yes):

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Post Sat Dec 02, 2017 5:26 am

Re: 2 - PCB Assembly

That's all of the resistors for now - next some capacitors. Take the 2x small ceramics marked 220 or 22p and fit them in the spaces marked C15 and C16:

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Post Sat Dec 02, 2017 5:29 am

Re: 2 - PCB Assembly

Take 2x brown ceramics marked 223 and fit them in the spaces marked C8 and C11:

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Posts: 950

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Post Sat Dec 02, 2017 5:32 am

Re: 2 - PCB Assembly

The 2 large yellow coil tank capacitors are next, fit them in the spaces marked C9 and C10:

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They are connected together so it doesn't matter which order they are stacked in as long as they're flat against the PCB.

Site Admin

Posts: 950

Joined: Tue Jul 24, 2012 8:05 pm

Post Sat Dec 02, 2017 5:41 am

Re: 2 - PCB Assembly

Now the zener diode D6, make sure it's fitted with the black band facing left:

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