Post by webbm00 on Jun 8, 2020 20:44:57 GMT
Hi, I am starting my lockdown Milano 750 build and I'm carefully reading all of the threads. A great source of practical info!
I am interested in your use of thermocouples, can you expand(!) a little of what you did there?
What material and where did you lay them?
What did you use for data collection?
I rather like the idea
Thanks
I use the thermocouples to tell me when to add another log when I'm cooking larger pieces of meat over long periods, how well I'm controlling the oven air temperature and determining when the meat is cooked.
I realise on the plot from my belly of pork I didn't give a key
DF, DL and DR are dome front, left and right - I use this for the add another log test when they start to drop. I can see the chart live on my phone or computer so can work while keeping the fire going
BB, BL, BR are fire bricks back, left and right - Tells me the temperature of the cooking floor (good for telling me when to start pizza cooking) and you can tell from the plot that I had the fire on the left
TO is Temp Oven - A probe that I keep in the over and off the floor to tell me the over air temperature. When cooking meat this is what I'm trying to control
TM is Temp Meat - A probe pushed in the meat to tell me when it's cooked
Where I placed them is documented in the build. I have them in the base, on the insulation, under the fire brick floor, in the dome, on the dome under the insulation and on top of the insulation. I only use 8 at the moment due to recording channels but will add 8 more at some time. I use a raspberry pi 3B+, a load of thermocouple interface boards, some custom python code and a few libraries, an influxdb database and Grafana for the charts. I should do a post on the setup at some point. I also use the raspberry pi for a MQTT broker to control the lights in the Pizza Hut and node red as a controller so I can turn them on and off from my phone and PC
The plan when I get some time is to add a gauge next to the oven that shows the average dome temperature (or some of the other data). I've got a 15" brass dial that's waiting for me to get going on it. Also the kids want me to add some lights behind the oven that go from blue to red when the oven heats up. I've got the lights and written most of the code I just need to install it. Once you have the thermocouples the possibilities are endless