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Photo: John Boxall

Sick of trying to figure out which pins are used by some obscure Arduino shield? Can't tell whether two shields will be compatible with each other?

This shield database arose out of a discussion on the Arduino Forums about the need for a comprehensive online reference for shield pin assignments. It lists as many Arduino shields as I can find along with their pin usage, making it easy for you to determine if particular shields are compatible.

This system is still under heavy development so it's quite likely to break from time to time while I'm making changes.

I already have a to-do list, but if you have any other ideas I'd love to hear about them. The best place to discuss it is the forum thread that started it all, so please come along and have your say.

If you know of a shield that needs to be added, please tell me about it!

And if you have any other questions or comments I'm always happy to receive a good, old-fashioned email.


--Jonathan Oxer

Submission Queue
There are currently 531 shields submitted that I haven't got to processing yet. Sorry!

License Ranking
Unknown: 178 shields
CC BY-SA 3.0: 45 shields
Unknown / closed source: 43 shields
TAPR Open Hardware License: 17 shields
CC BY-SA 2.5: 13 shields
CC BY-NC-SA 3.0: 5 shields
GPL v2: 3 shields
CC BY-SA 3.0 US: 3 shields
GPL v3: 3 shields
CC BY-SA 2.5 AU: 2 shields
CC BY 3.0: 2 shields
BSD: 1 shield
CC BY-NC 3.0: 1 shield
MIT Expat: 1 shield