Here are some photos of my seedlings.
https://coldwarcomputing.com/photos/seed_garden_2.jpg
The one in the back (at the top of the photo) is the first one I made, and it contains herbs (clockwise from upper left: Rosemary, Thyme, Oregano, another Rosemary, and Basil). All have germinated.
The one in front contains 5 instances of Chinese Five-Color Peppers. Only two have germinated.
https://coldwarcomputing.com/photos/seed_garden_1.jpg
This is a front-on view that puts all of the wires and stuff in perspective. Each of these gardens has 5 containers, and each container has a soil
moisture sensor. The Arduino continually cycles through them, making sure
that each one is at or above a hardcoded, per-container threshhold. If one is below the threshhold, it stops cycling and the red LED turns on until the problem is resolved, and then it goes back to cycling.
The peppers were originally an experiment to determine a good moisture level for peppers. The moisture threshholds for the 5 containers were set to 10%, 20%, 30%, 40%, and 50%. Only the seeds in the 10% and 20% containers germinated. I replanted the three containers that did not germinate, and now the threshholds are set to 10%, 12%, 14%, 16%, and 18%.
https://coldwarcomputing.com/photos/seed_garden_3.jpg
This is the new seedling garden that I'm working on, which will have 8 containers and 8 sensors. This is for the Baker Creek seeds, which haven't arrived yet. There will be four varieties of pepper, two varieties of gourd, one microtomato, and one bean plant.
We have a privacy fence around our backyard and the one at the rear of the
yard already has a grapevine growing up the center of it. I thought the gourd and bean vines might make nice additions to the left and right.
Jeff.
--- Mystic BBS v1.12 A46 2020/08/26 (Raspberry Pi/32)
* Origin: Cold War Computing BBS (21:1/180)