SparkFun Breadboard Power Supply Stick 3.3V/1.8V

This is a very simple board that takes a 4-9V input voltage and outputs a selectable 1.8V or 3.3V regulated voltage. All headers are 0.1" pitch for simple insertion into a breadboard.

Input power can be supplied to either the DC barrel jack or the two pin header labeled + and -. Output power is supplied to the pins labeled GND and VCC. Board has both an On/Off switch and a voltage select switch (3.3V/1.8V).

The two pairs of GND and VCC pins are spaced such that when connected to our Basic Breadboard both power busses will be powered.

Check out our Unregulated Power Supply Tutorial!

Note: We’ve released a new version of the SparkFun Breadboard Power Supply Stick, it can be found here! The new version functions the exact same way as this older model but we’ve made a few changes to footprints, the silkscreen, and added a second set of pins that output to the breadboard to help with stabilization. Go check it out!

  • 4-9V input voltage via barrel jack or 2-pin header
  • 3.3V or 1.8V regulated output voltage
  • ON/OFF switch
  • Output voltage select switch
  • Power status LED
  • PTC fuse protected power
  • 5.5x2.1mm center positive barrel jack
  • 2.15x0.65"

SparkFun Breadboard Power Supply Stick 3.3V/1.8V Product Help and Resources

Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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