Raise PWM frequency
Adjusting PWM frequencies to better match FDD8780 MOSFET spec. - Hotend PWM frequency increased from 488.28 Hz to 1953.12 Hz – Referencing the Forward Bias Safe Area from the hotend MOSFET's datasheet, this value should be safer. - Hotbed PWM frequency increased from 7.26Hz to 30.48Hz - Use software PWM for fans to reduce whine – The higher PWM frequency works well with the stock parts cooling fan and might allow for better control of third party fans
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@ -379,10 +379,10 @@
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// If you are using a pre-configured hotend then you can use one of the value sets by uncommenting it
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// i3 Mega
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#define DEFAULT_Kp 15.94
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#define DEFAULT_Ki 1.17
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#define DEFAULT_Kd 54.19
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// i3 Mega stock v5 hotend, 40W heater cartridge (3.6Ω @ 22°C)
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#define DEFAULT_Kp 18.58
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#define DEFAULT_Ki 1.38
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#define DEFAULT_Kd 62.40
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// Ultimaker
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//#define DEFAULT_Kp 22.2
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@ -436,10 +436,10 @@
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//#define PID_BED_DEBUG // Sends debug data to the serial port.
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//Anycubic i3 Mega 160W Ultrabase
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#define DEFAULT_bedKp 251.78
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#define DEFAULT_bedKi 49.57
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#define DEFAULT_bedKd 319.73
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//Anycubic i3 Mega Ultrabase (0.9Ω @ 22°C)
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#define DEFAULT_bedKp 187.45
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#define DEFAULT_bedKi 35.75
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#define DEFAULT_bedKd 245.71
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//120V 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
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//from pidautotune
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@ -1827,13 +1827,13 @@
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// Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
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// which is not as annoying as with the hardware PWM. On the other hand, if this frequency
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// is too low, you should also increment SOFT_PWM_SCALE.
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//#define FAN_SOFT_PWM
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#define FAN_SOFT_PWM
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// Incrementing this by 1 will double the software PWM frequency,
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// affecting heaters, and the fan if FAN_SOFT_PWM is enabled.
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// However, control resolution will be halved for each increment;
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// at zero value, there are 128 effective control positions.
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#define SOFT_PWM_SCALE 0
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#define SOFT_PWM_SCALE 2
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// If SOFT_PWM_SCALE is set to a value higher than 0, dithering can
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// be used to mitigate the associated resolution loss. If enabled,
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