Electricity is a powerful force capable of amazing things, but also extremely dangerous in the wrong hands. As makers, we know how one wrong decision can cause damage to a project or ourselves, which is why dummy loads are so helpful.
Whether you’re testing a battery, supply circuit, power bank, or anything else, this Simple Load Bank is a perfect fit. This device is one square-inch in size and allows you to set constant current levels with a built-in potentiometer or analog input voltage.
The actual current value is readable with a multimeter or Arduino development board. Examples are available on Github. The combination of a low price, small form factor, and high performance make this an easy win for testing power sources in any current or future projects.