Circuit for automated hydroponic pot?
Long time no C... sorry for the pun, it's late here and with 4.5 hours of daylight if feels like night all the time...
Anyhow, we have a well working hydroponic pot (https://botanium.se/products/botanium-kit?variant=51291156679), have used it to grow chili (successfully) and cherry tomatoes (no fruit, plant died). Now we have two tiny stalks appearing, they might be a combination of orange, tangerine, lemon, or apple. After the tomato plant died I have just randomly thrown some seeds there, so not sure what is growing, and as they most probably won't grow fruits, we might not even get to know what they are.
This pot pumps some water every 3 hours to keep optimal moisture in the growing medium.
Now I'd like to recreate a similar pot, initially I'd just cut a plastic bottle in half, and turn the top part upside down in the bottom part, and use a small pump to pump water from bottom to top. Later I might consider 3D-printing the container.
I have since before the small 6V water pump shown in the picture, so now I'd "only" need a circuit built
This would need to pump water for approx. 10 seconds, e.g. every 3 hours. Or for 5 seconds every hour etc. These I'd just need to find out with trial and error.
I've found different circuits on the web, many of them with a 555-timer and some other components. But as I'm a programmer and not an electronics guru, I'm not sure what would work and how to get the pump into the circuit.
If a MPU is needed, then I have one or two BS2-boards, some P1 Activity Boards, too many P1 Project boards, a P1 Flip and also a P2. (not mentioning that I have some Arduino boards and Raspberry's as this is a Parallax forum).
Now when I think about it, perhaps I should use a P1 Project board so it's easier to change parameters.
Any suggestions on the circuit side, or otherwise?