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Building the front panel PCB |
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| Components 2 x 1kΩ Bourns trim pots (you may re-use the ones on the speed controller PCB) 2 indicator LEDs, one red, one green copper strip breadboard - 14 strips by 8 holes colour-coded ribbon cable 1k5Ω resistor 2 x 3 way Molex 0.1" connector plugs 1 x 8 way Molex 0.1" connector plug |
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| Construction |
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| Cut the breadboard to the shape shown Cut the six copper tracks in the middle, where the gap is shown Solder the Molex pins on the ribbon cable and fit into the plugs. leave a reasonable length, say 10cm Solder on the trim pots, the resistor and all the wiring, including the wiring to the rotary switch (indicated A, 1, 3 in the diagram) Cut spacers from wood or plastic, to fit between the PCB and the front panel, deep enough to clear the trim pots. sizes are indicated by the dark patches on the diagram. Glue onto the PCB  [click for full size] |
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