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Decade Resistance Box (Open hardware)

4 years ago 1145
  • Description
  • Documents
  • BOM
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Description

Description: This is the Decade Resistance Box, an involved PTH soldering kit that allows you to quickly and accurately dial in a specific resistance value between 0 and 999,990 Ω, in 10 Ω increments. The concept is simple, a decade box is a tool that contains resistors of many values that can be accessed via mechanical switches. All you need to do is just adjust the knobs to output any of the discrete resistances offered by the box. Once assembled, each kit will have controls that correspond to the digits in a decimal number - a control for the ones position, a control for the tens position, a control for the hundreds position, and so on.

The Decade Resistance Box not only provides a challenging soldering experience but also a great tool for any workbench. In the Documents section below you will find an in depth Hookup Guide that provides you with assembly instructions, an enclosure walkthrough, and an operation guide.

GitHub (Design Files) Sparkfun link:https://www.sparkfun.com/products/13006

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Documents

SparkFun_decade_resistance_box SCH

SparkFun_decade_resistance_box PCB

BOM

ID Name Designator Footprint Quantity
1 FRAME-LETTER FRAME1 CREATIVE_COMMONS 1
2 SWITCH_ROTARY_1X10KIT SW1,SW2,SW3,SW4,SW5 ROTARY_SWITCH_1X10_KIT 5
3 100k R1,R2,R3,R4,R5,R6,R7,R8,R9 AXIAL-0.1EZ 9
4 10k R10,R11,R12,R13,R14,R15,R16,R17,R18 AXIAL-0.1EZ 9
5 1k R19,R20,R21,R22,R23,R24,R25,R26,R27 AXIAL-0.1EZ 9
6 100 R28,R29,R30,R31,R32,R33,R34,R35,R36 AXIAL-0.1EZ 9
7 10 R37,R38,R39,R40,R41,R42,R43,R44,R45 AXIAL-0.1EZ 9
8 OSHW-LOGO LOGO1,LOGO4 OSHW-LOGO-L 2
9 SFE_LOGO_NAME_FLAME LOGO2 SFE_LOGO_NAME_FLAME_.2 1
10 SFE_LOGO_NAME_FLAME.5_INCH LOGO3 SFE_LOGO_NAME_FLAME_.5 1
11 STAND-OFF STANDOFF1,STANDOFF2,STANDOFF3,STANDOFF4 STAND-OFF 4
12 BANANA-JACK JP1,JP2 BANANA-JACK 2

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