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pwm note

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Maxim Devaev 2022-12-02 14:26:53 +03:00
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docs/gpio.md
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@ -348,6 +348,15 @@ kvmd
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The `pwm` driver allows you to use [some GPIO pins](https://pinout.xyz/pinout/pwm) on the Raspberry Pi for PWM. The `pwm` driver allows you to use [some GPIO pins](https://pinout.xyz/pinout/pwm) on the Raspberry Pi for PWM.
!!! note
Due to hardware limitations, this module conflicts with the **kvmd-fan** (PiKVM fan controller).
To use it, you have to use hardware PWM for kvmfan. To do this, add the following lines to `/etc/kvmd/fan.ini`:
```ini
[main]
pwm_soft = 80
```
Here the small example with servo control: Here the small example with servo control:
1. Add to `/boot/config.txt`: 1. Add to `/boot/config.txt`:
@ -416,6 +425,15 @@ kvmd
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The `servo` module is built on top of the `pwm` module and allows user to define angles instead of `duty_cyles` to control a PWM enabled servo motor like SG90. When the button is pressed the servo motor moves to an angle defined by `angle_push` and when button is released it moves back to `angle_release`. In the example configuration for a [cheap 5V SG90 Servo](https://www.ebay.co.uk/itm/184555802744), the motor moves to an angle of 45 degrees when button is pressed and moves back to 20 degress when released. The `servo` module is built on top of the `pwm` module and allows user to define angles instead of `duty_cyles` to control a PWM enabled servo motor like SG90. When the button is pressed the servo motor moves to an angle defined by `angle_push` and when button is released it moves back to `angle_release`. In the example configuration for a [cheap 5V SG90 Servo](https://www.ebay.co.uk/itm/184555802744), the motor moves to an angle of 45 degrees when button is pressed and moves back to 20 degress when released.
!!! note
Due to hardware limitations, this module conflicts with the **kvmd-fan** (PiKVM fan controller).
To use it, you have to use hardware PWM for kvmfan. To do this, add the following lines to `/etc/kvmd/fan.ini`:
```ini
[main]
pwm_soft = 80
```
To use Servo motors in PiKVM you need to follow steps 1-3 for [PWM Module](#pwm) and then use the following configuration. To use Servo motors in PiKVM you need to follow steps 1-3 for [PWM Module](#pwm) and then use the following configuration.
Add to `/etc/kvmd/override.yaml`: Add to `/etc/kvmd/override.yaml`: