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by xtal256
Sat Jun 08, 2019 11:19 am
Forum: Troubleshooting
Topic: Bluetooth and hciuart not working
Replies: 2
Views: 222

Re: Bluetooth and hciuart not working

Installing pi-bluetooth worked. I did not know that there was a specific install for the Raspberry Pi.

Douglas6 wrote:
Sat Jun 08, 2019 9:30 am
Don't ever use rpi-update.
I have read that a few times. However, at this time I felt I had no choice.
by xtal256
Sat Jun 08, 2019 4:00 am
Forum: Troubleshooting
Topic: Cannot open nano in boot shell
Replies: 10
Views: 818

Re: Cannot open nano in boot shell

I've got the same issue with a fresh install of Raspbian.

Adding the TERM env var worked, but as others have pointed out it's not persistent.

I doubt adding it to .bashrc is the best way, as .bashrc itself checks for '$TERM', implying that it should be set elsewhere.
by xtal256
Sat Jun 08, 2019 3:31 am
Forum: Troubleshooting
Topic: Bluetooth and hciuart not working
Replies: 2
Views: 222

Bluetooth and hciuart not working

(I also posted this in the sticky bluetooth thread) I bought a Pi 3 and used the image from an older Pi 2 (so there was no bluetooth on it). Now, although though the new Pi supports bluetooth, I'm having some trouble getting it working on my image ("Raspbian GNU/Linux 9 (stretch)", upgraded from jes...
by xtal256
Tue Jun 04, 2019 1:07 am
Forum: Troubleshooting
Topic: STICKY: Bluetooth not working after update - need info
Replies: 164
Views: 155138

Re: STICKY: Bluetooth not working after update - need info

Thanks.

I did that, and it said "Removed /etc/systemd/system/hciuart.service". Now the service cannot be found.

How do I re-install this service?
by xtal256
Sun Jun 02, 2019 8:33 am
Forum: Troubleshooting
Topic: STICKY: Bluetooth not working after update - need info
Replies: 164
Views: 155138

Re: STICKY: Bluetooth not working after update - need info

Hi, Not sure if best to post here or start a new thread, but I'm also having bluetooth problems. Basically, I bought a Pi 3 and used the image from an older Pi 2 (so there was no bluetooth on it). Now, although though the new Pi supports bluetooth, I'm having some trouble getting it working on my im...
by xtal256
Tue May 21, 2019 12:35 am
Forum: Camera board
Topic: How to get lowest latency with PiCamera
Replies: 10
Views: 1147

Re: How to get lowest latency with PiCamera

Thanks
by xtal256
Mon May 20, 2019 4:28 am
Forum: Camera board
Topic: How to get lowest latency with PiCamera
Replies: 10
Views: 1147

Re: How to get lowest latency with PiCamera

I've been through where any latency comes from numerous times in the past. Hi 6by9. I'd like to learn more about latency on the picamera. Could you please link me to some of these discussions you mention? When I search your posts for the term "latency", I get 170 results. Are there any posts in par...
by xtal256
Tue May 14, 2019 10:44 am
Forum: Camera board
Topic: How to get lowest latency with PiCamera
Replies: 10
Views: 1147

Re: How to get lowest latency with PiCamera

After reading the doco in more detail, it appears I have been doing it wrong. I thought that just setting the framerate would be enough for it to detect that it needs to use sensor mode 5. But it may have still been at 1920x1080 resolution and using a different sensor mode. I have now forced it to u...
by xtal256
Tue May 14, 2019 6:32 am
Forum: Camera board
Topic: How to get lowest latency with PiCamera
Replies: 10
Views: 1147

Re: How to get lowest latency with PiCamera

Hi 6by9, Are you saying that you have made blogs/posts on latency in the past? Could you provide some links? My monitor is 1920x1080 @ 60Hz. In order to get the Pi to output at the correct mode when the screen is turned off, I have set the following video config (after making sure the monitor suppor...
by xtal256
Mon May 13, 2019 11:35 am
Forum: Camera board
Topic: How to get lowest latency with PiCamera
Replies: 10
Views: 1147

How to get lowest latency with PiCamera

Hello, I have a Raspberry Pi 3 and a Pi camera (specifically, the mini "spy" variant) which captures video and outputs to a HDMI connected LCD screen. I'd like to also save the video to file, but showing it on screen is a must. I am looking to get the highest framerate and lowest latency possible. C...
by xtal256
Wed May 08, 2019 12:58 am
Forum: Camera board
Topic: How many overlays is "too many" in PiCamera
Replies: 3
Views: 333

Re: How many overlays is "too many" in PiCamera

Thanks for your detailed and helpful response.

By scaling an image, do you mean providing an image as source data to "add_overlay" but providing a size other than the image's natural size?
If so then I am definitely not doing that, so I should be ok.
by xtal256
Mon May 06, 2019 3:46 am
Forum: Camera board
Topic: How many overlays is "too many" in PiCamera
Replies: 3
Views: 333

How many overlays is "too many" in PiCamera

In the documentation for picamera.PiCamera.add_overlay , it says: If too many overlays are added, the display output will be disabled and a reboot will generally be required to restore the display. It then goes on to say that the exact number depends on a number of factors. I am planning on testing ...
by xtal256
Sun Aug 27, 2017 11:03 am
Forum: Troubleshooting
Topic: Time-out when reading from USB on Raspberry Pi
Replies: 1
Views: 641

Re: Time-out when reading from USB on Raspberry Pi

It's weird, but when I re-run the program with "debug=True" passed to USB2Driver and/or "wait=False" passed to start(), it starts working after that (even if I revert the code). Not sure if it's just co-incidence or not, but it does seem to help.
by xtal256
Sat Aug 26, 2017 9:53 am
Forum: Troubleshooting
Topic: Time-out when reading from USB on Raspberry Pi
Replies: 1
Views: 641

Time-out when reading from USB on Raspberry Pi

Hello, I am trying to read data from an ANT device using the python-ant project (currently maintained here ). When I first started on it over a year ago, I managed to get it working. But now I've come back to it and for some reason it has trouble working. It will occasionally work, but often it term...

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