chamber heating fan - auto on when you set chamber temperature
-
@jay_s_uk couldnt find daemon.g in settings>system editor>system directory (same place where is config.g) . using RRF v2.01.
should i upgrade to find daemon.g, or is it elsewhere. -
@chiranjeevi if you're using 2.01 then there's no option that I know of. You'd have to upgrade to 3.x.x.
Even then, daemon.g won't exist u til you create it -
@jay_s_uk thanks will upgrade tomorrow.
how to create it. can u redirect to any links or tutorials.
im a mechanical engineer, so kinda noob on this side. -
-
@mrehorstdmd ive got a 2000 watt heater. which is insufficient. im reaching 140 celsius chamber. intend to power up to 3000 watt to reach 180 celsius.
my fan sucks air at the bottom, passes it over the heaters and spits it out at the top. so i guess ill have to keep the fan speed constant throughout the build to avoid artifacts that would correspond to whether fan was on or off.
i do have a TCO but for the chamber over temp protection. im not sure if i can connect a TCO directly to the heater, because for a chamber temperature of 180c, the heater would be at say 360c or more. gotta determine this . and also i think TCO for such high temperatures are hard to find.
-
@chiranjeevi another approach is to add a second temperature sensor on the heater and then set the fan up to turn on whenever your chamber heater got above a certain temperature.
-
@T3P3Tony that is one thing i can do. but im having two problems.
- im using a finned heater, the implementation is not quite straight forward, maybe ill have to get a custom made finned heater. ok i will think in this direction.
- i have used up the 3 available thermistor inputs for bed, hotend and chamber, not left with any more. i tried the PT100 using the official daughterboard, but its not working well, maybe due to interferences. is there a way to add more thermistors to duet 2 wifi?
-
@chiranjeevi said in chamber heating fan - auto on when you set chamber temperature:
is there a way to add more thermistors to duet 2 wifi?
A Duex5?
-
@Phaedrux unfortunately i am already using a duet expansion breakout board for my x and y closed loop steppers, it already uses the same expansion connector so cant use a duex5.
even if i could, it would be hard to convince myself to buy an entire duex5 one to use a thermistor port. is there a way to use some terminal on the duet2wifi board and configure it as a thermistor input. -
@chiranjeevi said in chamber heating fan - auto on when you set chamber temperature:
i tried the PT100 using the official daughterboard, but its not working well, maybe due to interferences. is there a way to add more thermistors to duet 2 wifi?
If you already have the Pt100 daughterboard that would probably be the easiest solution. Interference may be overcome with improved shielded cabling and 4 wire mode.
