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Step 4The Diodes
The are also options for doing the diodes for the fan control.
This is from the site
If you don't want lights, just use the left-hand section of the schematic, for pole 'A'. Using a 12-way 1-pole switch. This would allow the range to be extended, using single diodes between each position. You could then use 1A Schottky diodes, they drop under 0.5V per diode so would give smaller steps, and/or have an unconnected "off" position at one end.
For my switches I used 6 Diodes(Type1N4001). I did my wiring like this.
This is from the site
If you don't want lights, just use the left-hand section of the schematic, for pole 'A'. Using a 12-way 1-pole switch. This would allow the range to be extended, using single diodes between each position. You could then use 1A Schottky diodes, they drop under 0.5V per diode so would give smaller steps, and/or have an unconnected "off" position at one end.
For my switches I used 6 Diodes(Type1N4001). I did my wiring like this.
- no diode for full 12v
- 2 diodes
- 2 diodes
- 1 diode
- 1 diode
- No diode for off (later updated to 2 diodes for a very low speed)
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