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Plant automation, Soil moisture and watering with pump?

Cliff Karlsson last edited by

I want to try to build an automated watering "system" for my plants. But when reading about the soil moisture sketch I have noticed that there has been alot of talk of electrolysis and that the soil sensors will corrode and stop working. I have also noticed that there is another sketch in the development-branch witch alternates power to prevent this happening.

But my question is, is it possible to alternate power using cheap ebay moisture sensors? I have both regular 2pin moisture sensors with sensorboard with VCC/GND/A0/D0 and some funduino moisture sensor that have components directly on the sensor and have pins with +-and S.

Second question is how do I add a pump to the sketch? I have a small 5-12v pump, mosfets, and diodes. But how do I connect them and how do would that sketch look like?

I thought this would be something that I could find in the build section but I have not found any more sketch than the soil moisture sketch witch I guess have the electrolysis problem.
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@andriej Hi, I had problem using the main branch mysensors/Raspberry, that because of the bit-field struct (header_s) in Sensor.h They will get packed in different order on the arduino compared to the RPi (at least with my compiler, gcc). In order to fix this I created the 1.4dev branch. It uses full bytes instead of the bit-fields, but you need (of cause) to compile both the sensors (arduino) and the gateway (RPi) using the 1.4dev branch. We need to fix this in the main branch later on (and use the same files as in mysensors/Arduino/libraries/MySensors)
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@mimaret It was a pleasure. Thank you for your feedback!
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@OldSurferDude My old 2.0 setup is with nRF24L01 radios. This is a link to the thread on some light switches that I designed and built. https://forum.mysensors.org/topic/7376/us-decora-wall-switch-continued/2 I am aware that you cannot have two MQTT gatways. When I designed my old setup I was not that familiar with MQTT so I never ended up implementing it. On the home assistant server that I have set up though, I have installed the MQTT broker on there so I should be able to comunicate with any MySensors stuff over MQTT in the future devices I make/set up. As I mentioned, I do have a Home Assistant box that I have started about 4 months ago and eventually want to migrate my Vera equipment to the HA box. As for the YAML and Python, I'll muddle my way through. used to program in PHP and have done enough on Arduino that I'm sure it won't hurt my brain too much.
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LiFePO4 batteries are a great choice because they have a long life cycle and are much safer than other lithium-based batteries. However, you need a solar charge controller that’s compatible with LiFePO4 to prevent overcharging and maintain efficiency. A good MPPT controller can significantly boost energy harvest from your panels. Also, ensure your solar panel output matches your power needs. If you're in solar ireland, you might find some local companies that offer tailored solutions for maximizing solar efficiency in lower light conditions.
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General Discussion • • kiesel

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Thanks for the offer @TheoL ! I have moved on to a differenct project. Also, a lesson that I have learned many times, "If it works, don't fix it!" -OSD
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@eiten Ran into the same error but of course the community is always at hand, ready to help! Great! I'm using MySensors 2.3.2 release version. Downgrading the ESP8266 board library to 2.7.4 as suggested by @OldSurferDude did the trick. I'm still clinging to MySensors. So simple and inexpensive to use! All sensors and other stuff connects over three MQTT GW in three locations back to my Home Assistant. PS: Get well soon! Regards, Gunnar

Plant automation, Soil moisture and watering with pump?

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Plant automation, Soil moisture and watering with pump?

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