Open jgoldwein opened 1 year ago
I believe the heating panel deteriorates quickly because it actually gets way hotter than what the LMT85 measures. Even when set to 140C I measured over 200C on the heatplate. An easy solution is to use an NTC thermistor stuck under the heatplate instead of the LMT85.
Good idea, but I know that solder melting for reflow does not seem to occur until after 140°C or so for solder that has a 138°C melting point on my system. Maybe we need to factor in the r-values (heat resistance) of any material such as PCBs that are in involved.
Still, I think it would be a good idea if we could detach the heating plate and replace it easily rather than the current design. With constant heating, cooling, and reheating, I can't help but think that there will inevitably be some deterioration of the heating plate.
Thank you kindly for responding to my comment. I think again that this is a great product and just want to make it even better.
Hello and thank you for this amazing project. I have now built 5 of these, all using JLCPCB boards and LSCS components that I have been able to solder on to the boards. I have also made some slight improvements in the firmware code which I have forked and posted at https://github.com/jgoldwein/PCB-reflow-solder-heat-plate/blob/main/Firmware/pcb_reflow_fw/pcb_reflow_fw.ino.
A few suggestions:
Thanks again for designing this. It is really appreciated and has been extremely useful to me.
JG