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Hey I was surprise myself that the blower itself doesn't really suffer much from the heat, but the PVC which connecting between the exhaust and the cyclone collector have significant sign of melting. I need to use plenty of aluminium tape to hold them together. To be honest, really does need to use better material :)
Hi LukasE14,I think you might be asking similar question as denulrix. I think those resistors are pull down resistors, should be for protection purposes as not to have a floating IO for the ADC input. I don't have any issue with the design.Regards
I did not build the TC4 per the schematic, I modified it by taking out parts which I do not need, I call my modified version the TC4lite, the schematic is in the gallery as well. Yes I used capacitors across my thermocouples as I notice some noise in my reading. I did not take note of the pull down resistors though, it is in my design and works just fine; I would guess it is to protect the ADC if the pins were left floating.
Hey I am using 50mm length K-type thermocouple. Yeah glad you give it a go! Let me know how it goes!
Haha eagle eye indeed! Yes it is double walled. I designed this to roast 1kg of green beans, unfortunately the heat capacity just isn't enough, hence the double layers. It does improve a little but given another chance, I would try to find a reasonably thick stainless steel over the double walled.
Whiteboard Study Table - Ik...View Instructable »
Looks like you are doing quite well. Machine taking shape yet?
Yes that is why I am already planning my next build. All stainless steel, but I might keep my current traffic cone, looks cool!
You are welcome! My only issue is I don't have the ability and tools to cut stainless steel and perform stainless steel wielding. I am planning send some of my next design to a CNC shop and get them CNC out or lazer cut. I don't really know much about Khaldi Fortis but if you have a mesh between flames and drum, might be useful in catching chaff dropping down.
How to Build a Traditional ...View Instructable »