Hi everyone. I just found out about Cayenne today, it sounds like it will do what I need. If I can figure it out at least. I’ll try to make this as short as I can.
For those of you who don’t know how a gasifier works I’ll do a quick run down. It has an upper chamber where the wood goes and a lower chamber where the gases from the burning wood goes. There is a blower that forces air into the top chamber which in turn forces the fire to burn upside down through a tube connecting the upper and lower chambers. In order to reburn the exhaust from the fire, more oxygen is injected as it enters the lower chamber. The result is little to no smoke.
Now for the part you all can hopefully help me with. I have the gasifier built, and working, I just want to make it more efficient and slower burning. To do that I need to be able to adjust the blower speed based off of different variables. Ideally I would like to have a K type thermocoupler in the upper chamber, a S type thermocoupler in the lower chamber, and possibly an 02 sensor in the fluestream. With those inputs I would like to be able to control the fan speed and have a dampener, operated by a servo, that adjusts the oxygen that is injected for the secondary burn.
Right now I am just looking for assistance in connecting the thermocouplers, an AC motor(110V) with a VFD, and a servo for the dampener to my Raspberry Pi.
I would greatly appreciate any input. As far as getting the raspi to do what I want it to once I do get everything connected, I ‘think’ I might be able to manage that, but if anyone has tips for that the would definitely be welcomed.