Board PCB

Assembly instructions for the V1 chessboard.
Tony
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Joined: Tue Jul 24, 2012 8:05 pm

Re: Board PCB

Post by Tony »

Take 16 10n capacitors from the component pile:

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Fit them in the locations marked here:

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Solder in place etc....
Tony
Site Admin
Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Board PCB

Post by Tony »

Cut 5 short pieces of wire for links. You could use the enamelled winding wire or strip the insulation from some single cored copper wire, anything up to about 0.75mm. or buy some brass or gold plated copper wire. I tried that on this board but think it looks overdone.

Fit them in the locations marked here:

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Note on the new PCB, I just used 1R resistors in place of the wire links.

Solder in place etc....
Tony
Site Admin
Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Board PCB

Post by Tony »

Take 16 2N7000 transistors from the component pile:

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Bend the legs 90 degrees and fit them in the locations marked here:
Make sure they face downwards and point in the direction shown.

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Solder in place etc....
Tony
Site Admin
Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Board PCB

Post by Tony »

Repeat the powerup test you made earlier, the readings should be the same If not check for solder bridges.

Take 1 Microcontroller from the component pile:

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Fit it in the location marked here:
Make sure the dot marking pin 1 is in the right place (bottom left)

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Solder carefully in place.
Tony
Site Admin
Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Board PCB

Post by Tony »

Connect the board to your power supply again and repeat the current test. It should still be about 6mA.

Check the voltage across the two diodes marked here:
It should be about 2.5V, if not check for shorted tracks and solder bridges around the transistors.

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If you've made it this far you should have a completed and working board ready for the driver coils. Repeat with the other 2 boards and you should now know which parts still need to be fitted to the partly built board.
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