I thought about that. Don’t think the HOA would approve. It would have to be a fairly big tank. The pump maker even told me I couldn’t use their pump to drive the drippers directly, that I should use a tank. However, I chanced it, and it’s been running since 2014. I think the saving grace is that it’s not a very deep well. 37 feet deep, and the water level is generally 11 feet below grade. The total head from the water level in the well to the top of the hill is maybe 70 feet.
Today I packaged the OSPI and the transformer and 5V power supply into a grey PVC weatherproof box. I removed the plastic case of the transformer to save space.