Can i use this on my k8200?
[quote=“Alloca”]Can i use this on my k8200?
e3d-online.com/index.php?route=j … ew&pid=542[/quote]
I think you should make some firmware settings then.
Apart from mechanical changed to fit it to your E3D or stock hotend.
At PT100 is a platinum resistance thermometer device with a resistance at 0C of 100 ohm and a fundamental interval of 38.5 ohm per 100 degrees.
They’re really nice accurate sensors, but not ideally suited for direct connection to a uController. You need some interface electronics.
I use them in a glasshouse control system with a 4 wire connection. One pair of wires provides a ‘constant’ current of a few mA to the PT100 and the other pair feeds the resultant voltage back. This eliminates the effects of the wiring resistance.
My circuit switches the excitation current between a 100 ohm 0.1% precision resistor (0C reference), a 138 ohm 0.1% resistor (99C reference) and the sensor, so the circuit is constantly correcting for drift and offset. The uController then uses a lookup table to correct for the sensor curve. That’s overkill for a 3D printer.