A 4 wire PT100 sensor. Let's be honest, this is excessive. It's Class A as well.
- Class A ± (0,15+0,002 * t), ±0,15 °C (0 °C), ±0,35 °C (100 °C), defined on range -100…+450 °C (wire wound resistor)
With an Octopus Pro, you need no additional hardware. This is, literally, the most accuracy possible on a 3D printer hotend.
You'll need all 4 wires back to the board, so if you're running a toolhead PCB you'll likely need an additional couple of runs for this. If you really want, you can just use one white and one blue wire and use it in 2 wire mode, but why would you do that?!
4 wire wiring, Octopus Pro:
DIP switch settings, 1-2-3-4: OFF-OFF-ON-OFF
Klipper Settings:
heater_pin: PA2 # Heat0
+sensor_type: MAX31865
+sensor_pin: PF8
+spi_speed: 2000000
+spi_software_sclk_pin: EXP2_2
+spi_software_mosi_pin: EXP2_6
+spi_software_miso_pin: EXP2_1
+#tc_use_50Hz_filter: False
+#tc_averaging_count: 1
+rtd_nominal_r: 100
+rtd_reference_r: 430
+rtd_num_of_wires: 4
+#rtd_use_50Hz_filter: False
+#control: pid
+#pid_kp = 19.755
+#pid_ki = 0.770
+#pid_kd = 126.680
+min_extrude_temp: 170
+# The minimum temperature (in Celsius) at which extruder move
+# commands may be issued. The default is 170 Celsius.
+min_temp: 0
+max_temp: 480
PT100 Class A 4 Wire
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- Product Code: PT100 +
- Availability: In Stock +
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£22.50
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+£15.00 +
+Tags: +PT100
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