License
Beginning Arduino with PlatformIO © 2021 by Seth Fischer is licensed under CC BY-SA 4.0.
Trademarks
Arduino is a trademark of Arduino S.r.l.
PlatformIO is a trademark of PlatformIO Labs OÜ.
Acknowledgements
Cover image: Adaptded from PhilippHenkel, CC BY-SA 4.0, via Wikimedia Commons.