This is where the Pi comes in – along with a network cable to the houseĢ x high temperature, industrial multistage stainless steel pumps (for motive mixing and discharge amongst other things)ġ x very low power coolant pump (coolant for condenser)Ģ x 3kW immersion elements (one for static heating, one for inline heating and potentially for running a flash evaporator)Ģx pressure level switches (one indicating 'full', the other indicating 'low') To that end I'm currently building the design around an industrial Programmable Logic Controller, but, being an embedded software engineer by trade, ladder logic and its control is rather clunky and unfamiliar to me – and the PLC has no network capabilities (I have to actually be there to press buttons and control the system). I'm in the process of constructing the forth iteration of fuel processor, which I would love to automate to a certain extent and control remotely. So here goes – I've been making my own biodiesel for road fuel, and potentially heating soon, for four years in a powered outbuilding at the end of the garden. Apologies in advance as this is likely to be a long one! Hi chaps, been following the progress of the Pi with some excitement for a while, but not posted here before.
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