Shantur Rathore
|
e4903c5184
|
Implement button push using servo motors controlled via pwm (#55)
1. Add to /boot/config.txt
```
dtoverlay=pwm
```
2. Create /etc/udev/rules.d/99-kvmd-pwm.rules
```
SUBSYSTEM=="pwm*", ACTION=="add", RUN+="/bin/chgrp -R kvmd /sys%p", RUN+="/bin/chmod -R g=u /sys%p"
SUBSYSTEM=="pwm*", ACTION=="change", ENV{TRIGGER}!="none", RUN+="/bin/chgrp -R kvmd /sys%p", RUN+="/bin/chmod -R g=u /sys%p"
```
3. Connect Servo motor like SG90 PWM connection to RPi GPIO18, +5V and GND to a 5V and GND pin on header
4. Add to /etc/kvmd/override.yaml
```
kvmd:
gpio:
drivers:
servo1:
type: pwm
pwm_chip: 0 # PWM Chip Number
pwm_period: 20000000 # Servo Motor SG90 Period in nano-seconds
duty_cycle_push: 1500000 # Servo Motor SG90 duty_cycle for pushing button
duty_cycle_release: 1000000 # Servo Motor SG90 duty_cycle for releasing button
scheme:
short_press:
driver: servo1
pin: 0 # Pin number is the PWM channel number on the PWM Chip
mode: output
switch: false
pulse:
delay: 0.5
max_delay: 2
long_press:
driver: servo1
pin: 0 # Pin number is the PWM channel number on the PWM Chip
mode: output
switch: false
pulse:
delay: 2
max_delay: 2
extra_long_press:
driver: servo1
pin: 0 # Pin number is the PWM channel number on the PWM Chip
mode: output
switch: false
pulse:
delay: 10
max_delay: 20
view:
header:
title: Controls
table:
- ["#Servo - Short Press", "short_press|Press"]
- ["#Servo - Long Press", "long_press|Press"]
- ["#Servo - Extra Long Press", "extra_long_press|Press"]
```
|
2021-08-14 01:14:22 +03:00 |
|