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![Raspberry_Pi Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::302666251.png) Raspberry Pi [@Raspberry_Pi](/creator/twitter/Raspberry_Pi) on x 606.9K followers
Created: 2025-07-09 15:22:26 UTC

Do you like LEGO, do you like Raspberry Pi?

Today we’re delighted to announce that the Build HAT firmware, together with its signing keys, is now open source and available under the permissive BSD 3-Clause licence.

Here’s our Gordon Hollingworth and @RaspberryPi_org’s Greg Annandale with the good news: 



![](https://pbs.twimg.com/media/GvbOuMGXkAIgc_M.jpg)

XXXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1942967587643564326/c:line.svg)

**Related Topics**
[greg](/topic/greg)
[bahamian dollar](/topic/bahamian-dollar)
[lego](/topic/lego)
[pi](/topic/pi)

[Post Link](https://x.com/Raspberry_Pi/status/1942967587643564326)