Reducing Arduino Power Consumption
Contributors:
Alex the Giant
Alex the Giant 
Resources and Going Further
More information on low-power modes and options can be found in the datasheet for the 328P.
For more power-related fun, check out the following SparkFun tutorials.
How to Build a Remote Kill Switch
Learn how to build a wireless controller to kill power when things go... sentient.
IoT Power Relay
Using the ESP32 to make a web-configured timed relay.
Understanding Thermal Resistance
Discussing what thermal resistance is, how it’s used for thermal management, and how to maximize the life of your project.
How to Run a 5V Device On a 3.3V System With Qwiic
Power up your 5V I2C devices on the Qwiic system! This tutorial shows you how to use the SparkFun Qwiic 5V Boost to integrate power-hungry sensors like the SEN55 seamlessly.