OPI-Zero GPIO control

r00X · Published in 2017-1-18 23:56:58

Hello guys,
how can I control the GPIO's of my OPI-Zero and is it possible to control a servomotor ?
Hope someone can help me

Thank You
and greetings
r00X

r00X · Published in 2017-1-19 23:14:58

Update: I get WiringPi installed so the GPIO's are working but I dont know how I can controll my Servo

r00X · Published in 2017-1-20 04:47:24

Edited by r00X at 2017-1-20 04:48

Update: The Servo rotates but after that I loos the connection - it seems that the OrangePi Zero crashes...

Here the Code:

#include <stdio.h>
#include <wiringPi.h>
#include <softPwm.h>
int main(void)
{
if (wiringPiSetup()) ;
pinMode(7, OUTPUT);
digitalWrite(7, LOW);
softPwmCreate(7, 0, 50);
softPwmWrite(7, 1);
for (;;) delay (10000) ;
return 0;
}

Copy code

It would be nice if someone can help me

Thanks
r00X

shooreg · Published in 2017-1-20 21:59:14

Your servo might be draining too much power from GPIO, which is not meant to be used as a power source - as a result the SoC crashes.
To avoid such a thing you should use servo driver with separate power supply.

r00X · Published in 2017-1-21 00:01:55

Edited by r00X at 2017-1-21 01:43

Hello shooreg,

thank you so mutch 4 your answer, i will test it out !

Edit: It works

- Thx

Eduard · Published in 2017-1-31 22:34:55

Hello r00X,

What did You install to get the wiringPi up and working? I think I have installed a wrong wiring version. On the commandline gpio readall return a pinout listing. It is showing 40 pins though there are only 26 on the zero. The C blink program was not able to set or reset a gpio pin.

Greetings,

Eduard