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Thanks! Hopefully, it will help someone reuse at least one of the components for another project :)
I'm having this issue now for a posting I just put up. https://www.instructables.com/Raspberry-Pi-Slack-Scroll-Bot/
Raspberry Pi Slack Scroll Bot View Instructable »
Pi Zero Talking Radio
No - I experimented with sprinkler valves first. What I found was that they required constant pressure to open and close, and since the drain didn't have much pressure they just stayed closed.