Buck-Boost Hookup Guide
Contributors:
Alex the Giant, Ell C
Alex the Giant, Ell C 
Resources and Going Further
For more information on the Buck Boost, check out some of the links below:
Need more inspiration? Check out these related tutorials!
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The FemtoBuck board is a high-efficiency, single-channel constant-current LED driver.
Single Supply Logic Level Converter Hookup Guide
The Single Supply Logic Converter allows you to bi-directionally translate signals from a 5V or 3.3V microcontroller without the need for a second power supply! The board provides an output for both 5V and 3.3V to power your sensors. It is equipped with a PTH resistor footprint for the option to adjust the voltage regulator on the low side of the TXB0104 for 2.5V or 1.8V devices.
Qwiic Quad Relay Hookup Guide
SparkFun’s Qwiic Quad Relay is a product designed for switching not one but four high powered devices from your Arduino or other low powered microcontroller using I2C.
Or check out this blog post.