robotmyst

I test it on the device, I can see how the servo is moving.

Hello I'm having trouble with connecting one servo to the GPIO pins and sending PWM signals. The servo seem to jiggle / twitch. I've tried to put a capacitor as well. I tried to connect it to Arduino and it seemed smoother there. The problem I think is because the PWM signals are not granular enough. The pigpio library for Raspberry PI is something that does this better, http://abyz.me.uk/rpi/pigpio/download.html where microseconds can be sent, instead of having a very hard limit on dutycycle value of 0-100. Can anyone help and share some ideas? Have you connected a servo that runs smoothly? If so, can you share the code?

It is from the website, debian 10 v3.0.23

@tooz from the download page, latest image for debian10. Tinker Board S Debian 10 V3.0.23 2023/08/04 1.69 GB

Sure, it's attached. dmesg.log

Yes I've tried that, and in /boot/config.txt I see overlay=camera-ov5647-overlay (writing from memory). Still problem :(. What I did also try was a gstream pipeline, something like this opened up a window. Somehow this bypasses communication, as the Kernel has not detected the camera. gst-launch v4lsrc ! video/x-raw ! videoconvert ! autovideosink

Hi I've connected a raspberry pi rev1.3 camera module (OV5647) but it cannot be detected. On boot I can see the LED diode flash for ~1sec. However none of the usual ffmpeg, fswebcam commands return something. Here's an excerpt from dmesg linaro@linaro-alip:~/Sandbox$ dmesg | grep ov5647 [ 3.278888] ov5647 2-0036: GPIO lookup for consumer enable [ 3.278915] ov5647 2-0036: using device tree for GPIO lookup [ 3.278982] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/i2c@ff660000/ov5647@36[0]' - status (0) [ 3.279306] ov5647 2-0036: Failed to detect device E.g I can see it flash with this command ffmpeg -f v4l2 -i /dev/video0 -vframes 1 test.jpg but it also gives me error libpostproc 55. 3.100 / 55. 3.100 [video4linux2,v4l2 @ 0x808bb5a0] Not a video capture device. /dev/video0: No such device