I've read some very helpful threads already -- summing up my plan w/ some questions. I could just buy these from Derrin -- but that's hardly any fun
- 4" stainless probe ends (from Brewers Hardware)
- M8 Male cable w/ leads (for the sensor end)
- M8 Female/Female cable (sensors to project box)
- M8 Male connector (for project box)
- DS18B20 (temp sensor)
- thermal paste
- heat shrink (adhesive & normal)
- solder the DS18B20 to the M8 Male w/ leads (may shorten the leads to ~4" outside the probe)
- cover all exposed connectors/solder joints with heat shrink
- add thermal paste to bottom of thermal probe
- insert probe/cable assembly and seal the top with adhesive heat shrink
It all seems pretty simple really (famous last words...)
- I plan to run these in non-parasitic mode as it has been more reliable with my futzing around so far. Does it matter in practice other than needing to do a strong pull-up when doing the temp conversion?
- Do I need a cap in the probe end for anything? I've seen mentions of small caps across Vdd and GRD.
- Is there value in 4-wire cables? Are they actually twisted pair inside? If I read write, I should run DQ/GRD on one pair and Vdd on the other pair.
- Is the thermal paste going to potentially create problems shorting out sensors?
- Any cheap sources for M8 cables/connectors?