SparkFun Decade Resistance Box

The SparkFun Decade Resistance Box is a comprehensive PTH soldering kit that lets you effortlessly dial in a precise resistance value from 0 to 999,990 Ω, in increments of 10 Ω. This decade box is a practical tool containing resistors of varying values that are easy to access via mechanical switches. By simply adjusting the knobs, you can output any of the discrete resistances offered by the box. Once assembled, the kit boasts controls corresponding to the digits in a decimal number - a control for the tens position, hundreds position, and so forth.

The SparkFun Decade Resistance Box is not just a challenging soldering experience, but a valuable addition to any workbench. An in-depth Hookup Guide is available in the Documents section, providing assembly instructions, an enclosure walkthrough, and an operation guide.

Please note that the rotary switches included with the Decade Resistance Box can be tough to turn. For ease of use, it is recommended to check out the Recommended Products section for compatible knobs.

The kit includes:

• 1x Decade Resistance Box PCB
• 1x Red Binding Post
• 1x Black Binding Post
• 5x Rotary Switch - 1-pole 10-position, with dress washer and hex nut
• 9x 10 Ω Resistor - 1/4 W, 1%
• 9x 100 Ω Resistor - 1/4 W, 1%
• 9x 1000 Ω Resistor - 1/4 W, 1%
• 9x 100K Ω Resistor - 1/4 W, 1%
• 9x 10K Ω Resistor - 1/4 W, 1%

For further information, refer to the following documents:

• Schematic
• Eagle Files
• Hookup Guide
• GitHub (Design Files)
• Product Video