Difference between revisions of "Raspberry PWM LED Control"
Jump to navigation
Jump to search
| (9 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
* https://electronicshobbyists.com/raspberry-pi-pwm-tutorial-control-brightness-of-led-and-servo-motor/ | * https://electronicshobbyists.com/raspberry-pi-pwm-tutorial-control-brightness-of-led-and-servo-motor/ | ||
| − | We'll use GPIO Pin | + | We'll use GPIO 24/ Pin 18 to drive the LED as in the default configuration of rc-dukes. |
| + | |||
| + | [[File:Raspberry-pi-pinout.png|400px]] | ||
| + | |||
[[File:PILEDPWM-2019-06-21.png|400px]] | [[File:PILEDPWM-2019-06-21.png|400px]] | ||
| + | |||
| + | We are going to use the Servoblaster software | ||
| + | see {{Link|target=Self_Driving_RC_Car#Servo Interface - Servoblaster}} | ||
| + | <source lang='bash'> | ||
| + | cat /run/servoblaster.status | ||
| + | p1pins=7,11,12,13,15,16,18,22 | ||
| + | p5pins= | ||
| + | |||
| + | Servo mapping: | ||
| + | 0 on P1-7 GPIO-4 | ||
| + | 1 on P1-11 GPIO-17 | ||
| + | 2 on P1-12 GPIO-18 | ||
| + | 3 on P1-13 GPIO-27 | ||
| + | 4 on P1-15 GPIO-22 | ||
| + | 5 on P1-16 GPIO-23 | ||
| + | 6 on P1-18 GPIO-24 | ||
| + | 7 on P1-22 GPIO-25 | ||
| + | </source> | ||
| + | |||
| + | GPIO 24 has Servoblaster Id 6 so | ||
| + | <source lang='bash'> | ||
| + | echo 6=120 > /dev/servoblaster | ||
| + | </source> | ||
| + | will set the LED to half bright | ||
[[Category:Raspberry]] | [[Category:Raspberry]] | ||
Latest revision as of 21:39, 22 June 2019
We'll use GPIO 24/ Pin 18 to drive the LED as in the default configuration of rc-dukes.
We are going to use the Servoblaster software see Self_Driving_RC_Car#Servo Interface - Servoblaster
cat /run/servoblaster.status
p1pins=7,11,12,13,15,16,18,22
p5pins=
Servo mapping:
0 on P1-7 GPIO-4
1 on P1-11 GPIO-17
2 on P1-12 GPIO-18
3 on P1-13 GPIO-27
4 on P1-15 GPIO-22
5 on P1-16 GPIO-23
6 on P1-18 GPIO-24
7 on P1-22 GPIO-25
GPIO 24 has Servoblaster Id 6 so
echo 6=120 > /dev/servoblaster
will set the LED to half bright