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by supasorn
Sun May 17, 2015 3:38 am
Forum: Troubleshooting
Topic: NOOBS SD card partitions not detected in Linux
Replies: 27
Views: 12420

Re: NOOBS SD card partitions not detected in Linux

I'm having the same problem on Ubuntu 14.04.2 I use NOOB + raspbian. There are 5 final partitions and when inspected in gparted, partitions with fat32, fat15, ext4 all have exclamation marks in front of them.

I'm trying to use super-block backup with e2fsck command, but it never worked.
by supasorn
Sat Apr 25, 2015 8:24 pm
Forum: Troubleshooting
Topic: PWM output does not stop
Replies: 9
Views: 3154

Re: PWM output does not stop

Thanks everyone! PWM does indeed stop (checked with LED), but SG51R still retains the position. This is weird considering the fact that if you haven't fed PWM to it, it stays free. But once you send PWM at least once, and stop PWM, it never stops retaining its position. I'm looking for a solution to...
by supasorn
Sat Apr 25, 2015 7:35 pm
Forum: Troubleshooting
Topic: PWM output does not stop
Replies: 9
Views: 3154

Re: PWM output does not stop

Thanks Joan! When I first turn on Pi, the servo is free -- no resisting motion. After I run the code, finish execution, the resisting motion is still there. I tried running python in interactive and non-interactive, both giving the same result and servo isn't free once PWM has be setup. I can't find...
by supasorn
Sat Apr 25, 2015 7:06 pm
Forum: Troubleshooting
Topic: PWM output does not stop
Replies: 9
Views: 3154

Re: PWM output does not stop

Yes, but there shouldn't be any force retaining its position, and that's what I'm experiencing.
by supasorn
Sat Apr 25, 2015 6:41 pm
Forum: Troubleshooting
Topic: PWM output does not stop
Replies: 9
Views: 3154

PWM output does not stop

I'm able to generate PWM output to my servo with different libraries: RPIO and wiringPi2 using these snippets: https://pythonhosted.org/RPIO/pwm_py.html and http://raspi.tv/2013/how-to-use-wiringpi2-for-python-with-pull-ups-or-pull-downs-and-pwm#pwm I'm able to control the position of the servo just...
by supasorn
Thu Feb 19, 2015 8:27 pm
Forum: Troubleshooting
Topic: USB hub with raspberry pi a+
Replies: 2
Views: 756

USB hub with raspberry pi a+

I'm wondering if anyone has any success connecting multiple devices through a USB hub to raspberry pi a+. I have raspberry pi 2 and I can connect keyboard, mouse, wifi dongle to each of the 4 usb ports on pi 2 or all through a usb hub. But when I tried to connect this hub to pi a+, none of the devic...

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