PCB assembly


Instructions and discussion for constructors of our nixie button kit

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Post Sun Apr 19, 2015 4:49 pm

PCB assembly

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 IC socket/USB/conectors in that order.

After preparing a suitable working space take the PCB and the 1K2 resistor (Brown Red Red). Fit this in the location marked for R3 as shown:

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Site Admin

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Joined: Tue Jul 24, 2012 8:05 pm

Post Sun Apr 19, 2015 5:02 pm

Re: PCB assembly

Fit the 3K3 resistor (Orange Orange Red). Fit this in the location marked for R4 as shown:

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Site Admin

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Post Sun Apr 19, 2015 5:04 pm

Re: PCB assembly

Fit the 12K resistor (Brown Red Black Brown). Fit this in the location marked for R1 as shown:

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Site Admin

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Post Sun Apr 19, 2015 5:06 pm

Re: PCB assembly

Now for the diodes (small glass beads). Fit these in the location marked for D1-4 as shown. Note they have to fitted the right way round, the black band faces the same way as the white band printed on the PCB under them:

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Site Admin

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Post Sun Apr 19, 2015 5:09 pm

Re: PCB assembly

Next the 10n capacitors (brown discs). Fit these in the location marked for C4,5 and 6:

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Site Admin

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Post Sun Apr 19, 2015 5:11 pm

Re: PCB assembly

Now the transistors. Fit these in the location marked for T1 and T2 as shown. The flat side faces to the top of the board as shown and is also printed on the PCB:

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Site Admin

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Post Sun Apr 19, 2015 5:12 pm

Re: PCB assembly

Fit the 4n7 mylar capacitor (green resin bead) in the location marked for C3:

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Post Sun Apr 19, 2015 5:14 pm

Re: PCB assembly

Fit the 8 pin IC socket in the location marked for IC1 as shown. The 'notch' in one side faces to the top:

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Site Admin

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Joined: Tue Jul 24, 2012 8:05 pm

Post Sun Apr 19, 2015 5:16 pm

Re: PCB assembly

Solder the 2x 2 pin plugs in the locations marked for SK2 and SK3 as shown:

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Site Admin

Posts: 891

Joined: Tue Jul 24, 2012 8:05 pm

Post Sun Apr 19, 2015 5:17 pm

Re: PCB assembly

Next the two axial coils. These are only supplied with the first batch of kits, later versions do not include them - just replace with wire links. Fit these in the locations marked for L2, L3:

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