Ion Mobility Spectrometry (IMS) provides low ppbv detection limits for gas-phase or aqueous analytes when coupled to appropriate ionization sources. These instruments rely upon establishing a steady, low-noise, reproducible, electric field to produce ion motion in a gas-phase environment. This electric field is typically on the order of 200-600 V/cm with 15 cm IMS units commonly in use for research applications, requiring a high voltage source capable of reproducibly supplying 6-10 kV with µA current requirements. In this work, we present a low-cost alternative for supplying these high voltages. Utilizing inexpensive, commercially available high voltage (HV) modules capable of producing 0-20 kV mapped to an analog 0-5V input signal, this work describes an Arduino controlled interface utilizing a digital potentiometer to set the desired output potential. The power supply is capable of rapidly changing polarities via a front-panel switch and includes the capability to ramp potentials between settings to avoid damage to attached devices. A front panel, latching button provides emergency shutdown by immediately pulling supplies to ground. Comparison to commercial power supplies provide verification of the efficacy of this supply.