Resistive Decade

thingiverse

Compact 6 digits resistive decade build with two optional range dials per step 1Ohm-100kOm (1 - 1.11MOhm) or 10Ohm to 1M (10 -10.11MOhm). all resistors are directly soldered between switch pins 1-2,2-3,3-4...10-11. other wires goes in series : terminal 1 -- switch1 middle contact, switch1 pin1 -- switch 2 middle contact, switch2 pin1 -- switch 3 middle contact, switch3 pin1 -- switch 4 middle contact, switch4 pin1 -- switch 5 middle contact, switch5 pin1 -- switch 6 middle contact, switch6 pin1 -- terminal 2. Parts: - resistors I used : Vishay MRS25 Series Axial Thin Film Fixed Resistor ±1% 0.6W ±50ppm/°C , 10pcs/ value 1/10/100/1k/10k/100k or 10/100/1k/10k/100k/1M - 6x Standard 12 position switch 1P12T, RS26-1-Pole-Position-12-Selectable-Band-Rotary-Channel-Selector-Switch, latched at position 11. - 6x 6mm diam. shaft / 20mm daim knob preferably with screw type for better position adjustment - 2x 4mm Thread Banana Binding Post Terminal Connector - 6x M3*10 tapered head bolts or similar size self tapers. 27/4/18 0.5mm hole misalignment on one side fixed on box top