![craftbeerpi- are expansion boards necessary? | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum craftbeerpi- are expansion boards necessary? | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum](https://cdn.homebrewtalk.com/data/attach/513/513951-PiConnections2.jpg)
craftbeerpi- are expansion boards necessary? | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum
![CraftBeerPi - Raspberry Pi Software | Page 27 | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum CraftBeerPi - Raspberry Pi Software | Page 27 | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum](https://cdn.homebrewtalk.com/data/attach/495/495496-IMG-20180124-071555.jpg)
CraftBeerPi - Raspberry Pi Software | Page 27 | Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum
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Amazon.com: DIN Rail Mount Pinout Breakout Terminal Block Module for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B Zero Zero-W : Electronics
![Possibility to switch several GPIO during the step by SlabOch · Pull Request #169 · craftbeerpi/craftbeerpi · GitHub Possibility to switch several GPIO during the step by SlabOch · Pull Request #169 · craftbeerpi/craftbeerpi · GitHub](https://raw.githubusercontent.com/Manuel83/craftbeerpi/master/docs/images/Hardwaresetup2.png)
Possibility to switch several GPIO during the step by SlabOch · Pull Request #169 · craftbeerpi/craftbeerpi · GitHub
![Amazon.com: DIN Rail Mount Pinout Breakout Terminal Block Module for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B Zero Zero-W : Electronics Amazon.com: DIN Rail Mount Pinout Breakout Terminal Block Module for Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B Zero Zero-W : Electronics](https://m.media-amazon.com/images/I/71uYNjuaPNL._AC_UF894,1000_QL80_.jpg)