Controlling anaerobic digesters with arduino Answered
Hi I am new on the Arduino scene and I am trying to build eight anaerobic digester tanks to conduct experiments for my thesis in engineering.
The setup will look as follows:
-Arduino motor shield R3
-Two motor stirring the digester at different RPMs. Motors will run at 12 V and around 0.5-1 A.
-The motor shield will use the wall jack as power supply via an AC-DC adapter.
-Biogas volume measuring device (tipping sensor)
-Aquaria air pump to supply Hydrogen Sulphite consuming bacteria with oxygen. This will be controlled with a relay and the volume measuring device.
-The pump will use the wall jack as power supply
-Temperature sensors DS18B20.
-Immersion heater controlled by the temperature sensor and a relay. The digester is supposed to be kept at 37°.
Everything will be logged but I haven’t decided if I will connect a Ethernet shield or if I should log on a SD card.
I think that I can manage to build it but I have some questions (a lot) but will just post some and post more later.
The experiments will run for 4-6 months how will the Arduino, shield and relays handle being on for that long? Do I need something with higher quality? (It would suck to burn down the university)
Any spontaneous thoughts that I should know or that could help me?