Background and Requirements

Tools

Parts List

DescriptionSourcePart NumberCostParts / item
Westinghouse 6” Lamp nipplesHome Depot7060600$3.7710
Westinghouse Solid Brass NutsHome Depot7017200$2.7712
3/8” x 3” Nylon Hex BoltHome Depot17248$0.983
Master Magnetic 3/4” Ceramic MagHome Depot96244$1.988
1.0 kohm 1/4w 5% ResistorJameco690865$0.09910
10 pF ceramic CapacitorJameco15333$0.0910
Optek OH180U Hall Effect SwitchJameco1871879$2.951
30 awg wire wrap wirevarious
Solder
Mylar tape
JB Weld
3 position female PWM cable

Cost per Device

DescriptionCostCost per deviceNotes
Lamp Nipples$3.77$0.377
Brass Nuts$2.77$0.4612 per device
Nylon bolt$0.98$0.326
Magnets$1.98$0.248
1k Resistor$0.099$0.0099
10pF Cap$0.09$0.009
OH180U Hall Effect Switch$2.95$2.95
Misc – Tape, solder, epoxy$0.50
$4.88

Schematic

Here is the internal schematic Magnetic Limit Switch Schematic

Material Prep

Assembly

Testing

Finishing Up

Final notes