Tuning hot-end temperature controller
From re:3D
Tuning Gigabot's temperature controller will help keep the hot-end temperature stable at the set temperature and allows it to heat up quickly.
- Connect Gigabot's power and USB cables.
- In Pronterface connect to Gigabot.
- Turn on the head fan by typing M106 S255 command in the lower right corner of Pronterface.
- If you have previously been printing wait for the hot-end to cool.
- In Pronterface type into the data entry box at the lower right corner:
- For GB2 use “M303 S200”
- For GB3 Left Extruder use “M303 E0 S200”
- For GB3 Left Extruder use “M303 E1 S200”
This will start the PID auto-tune function in the Marlin Firmware. The hot-end will cycle the heat up and down for a couple minutes until displaying the message: "PID Autotune Complete".
- Write down the last set of output values given.
- Classic PID
- Kp: 50.03
- Ki: 1.98
- Kd: 150.98
Adjusting the firmware
- In Pronterface disconnect from Gigabot, Close Pronterface, Restart Pronterface.
- Connect to Gigabot.
- In Pronterface type into the data entry box at the lower right corner: "M301 H1 P(your Kp value) I(your Ki value) D(your Kd value)".
- It should look like this using the example above: "M301 H1 P50.03 I1.98 D150.98" This will temporarily change the current settings for the temperature controller.
- In Pronterface type into the data entry box at the lower right corner: "M500" This will store the changes.
- In Pronterface: Set hot-end temperature to 200C and watch that it comes up to temp, overshoot the target temp slightly, undershoot temp slightly and then settles onto the target temp within 1-2 deg.