Relay control (with pre-3 firmware)
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Hi
Tried to find answers on this but mostly it was all about ethernet control of the whole printer's power...
I tried to connect my chamber heater in a stylish way but the safety feature of the RRF 1.2.1 kicks in after a couple of secs of trying to get the heater warm and even though it's a fairly compact 2Kw unit it just takes too long for the firmware and related error message is shown on the paneldue and cold it goes.
So enough with cool controls, I'll just use the thermostat of the heater (actually it looks like it can be all the time on 100% for ABS that I allways use) instead and forget controlling it what so ever.
But: It should go off when the print is finished.
How to achieve that? I still would not want to spend days in reconfiguring everything for RRF3
just to get the better chamber heater feats, everything else is just lovely.Thanks in advance for possible tips!
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https://duet3d.dozuki.com/Wiki/Gcode#Section_M42_Switch_I_O_pin
You can switch the IO pin. In your old firmware version you might need to unbind the pin first if it's a heater.
If the error you're getting is that it's not heating fast enough you might be able to just PID tune the heater so that it knows what to expect.
Recent RRF3 versions make this much easier.
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oh yes, the tuning... I forgot that again. will try that today.
Last time it said it takes too long, even when trying to tune it.
I got a ton of pins awailable especially on the Duex5. All the "extra" fans and endstops are not in use. How could one be taken into this purpose?
thanks!
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For the tuning timing out you may be able to increase the dead time value to allow it to compete a tuning cycle.
The PID tuning algorithm in RRF3.2+ has been improved to better tune slow heaters. Another reason to update.
