SparkFun Breadboard Power Supply Stick - 3.3V/1.8V General, Sparkfun Originals Tools & Home Improvement 2x - 6-pin Arduino Stackable

2x - 6-pin Arduino Stackable Headers

that’s it

It’s also a great educational tool for showing a range of functionality without having to get out the computers

you can determine altitude

Be aware that to switch between I2C and SPI interfaces a little bit of soldering between solder pads will be required

SparkFun Breadboard Power Supply Stick - 3.3V/1.8V General, Sparkfun Originals Tools & Home Improvement 2x - 6-pin Arduino StackableThis 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 sets of four GND and VCC pins