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by crnewton
Wed Apr 15, 2020 11:59 am
Forum: General discussion
Topic: Sensor output to RPI GPIO input
Replies: 1
Views: 81

Sensor output to RPI GPIO input

It's not clear to me how to connect the output of a sensor to the input of the RPI 3B+, without blowing up my pi. The sensor will be powered by an external 24V power supply. Sensor: Festo SPAN-B2R-G18M-PN-PN-L1 https://www.festo.com/media/pim/154/D15000100123154.PDF Switching output and analog outpu...
by crnewton
Mon Jan 06, 2020 12:37 pm
Forum: Troubleshooting
Topic: [RPi4] Webcam usb freeze os - input/output
Replies: 7
Views: 407

Re: [RPi4] Webcam usb freeze os - input/output

(on a setup without the firmware patch (you linked), setpci command executed, webcam connected & busy) lsusb -t : [email protected]:~ $ lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M |__ Port 1: Dev 2, If 0, Class...
by crnewton
Mon Jan 06, 2020 11:19 am
Forum: Troubleshooting
Topic: VLI firmware v2.0 - powersaving features enabled
Replies: 114
Views: 29193

Re: VLI firmware v2.0 - powersaving features enabled

I had 2 issues that seem to be related to this firmware update. the update didn't fix it for me, 'sudo setpci -s 01:00.0 0xD4.B=0x41' dit fix it (with our without this update). my problems were: - usb lagging & key sticking when using usb webcam: https://www.raspberrypi.org/forums/viewtopic.php?t=25...
by crnewton
Mon Jan 06, 2020 11:08 am
Forum: Troubleshooting
Topic: [RPi4] Webcam usb freeze os - input/output
Replies: 7
Views: 407

Re: [RPi4] Webcam usb freeze os - input/output

@jdb VL805 0137d did not help. howeveri just found a fix for me, if i do the following manual steps: sudo apt-get install pciutils sudo setpci -s 01:00.0 0xD4.B=0x41 This will resolve the issue of lagg and key sticking on usb devices (when using a usb webcam). explaination (from https://linux.die.ne...
by crnewton
Mon Jan 06, 2020 10:44 am
Forum: Troubleshooting
Topic: [RPi4/RPi3] Input lag with video driver enabled
Replies: 5
Views: 551

Re: [RPi4] Input lag with video driver enabled

I found a solution that solves this particulair issue. the downside is that in my situation it looks like its slowing down my system (rpi). sudo apt-get install pciutils sudo setpci -s 01:00.0 0xD4.B=0x41 This will resolve the issue of lagg and key sticking on usb devices (when using a usb webcam). ...
by crnewton
Mon Jan 06, 2020 8:47 am
Forum: Troubleshooting
Topic: [RPi4] Webcam usb freeze os - input/output
Replies: 7
Views: 407

Re: [RPi4] Webcam usb freeze os - input/output

I have the same issue. anyone found a solution for this? (qv4l2 did not solve the problem for me)
by crnewton
Wed Dec 18, 2019 2:41 pm
Forum: Troubleshooting
Topic: [RPi4/RPi3] Input lag with video driver enabled
Replies: 5
Views: 551

Re: [RPi4] Input lag with video driver enabled

RPI4 htop: https://i.imgur.com/gDFSpJw.png RPI3 htop: https://i.imgur.com/TdjQyk5.png looks like my CPU is doing fine, even tho on the rpi4 shows more threads of my .py script its the same sd card, and on rpi4 my mouse and keyboard lagg, and sometimes key stick. on rpi3 I have no issues. I use the o...
by crnewton
Wed Dec 18, 2019 11:10 am
Forum: Troubleshooting
Topic: [RPi4/RPi3] Input lag with video driver enabled
Replies: 5
Views: 551

Re: [RPi4] Input lag with video driver enabled

I have the same issue, did you find a solution? I experience no lagg or latency when I just boot the RPI4 (with latest raspbian buster img) when I run my python script, which hosts a webservice and serves images from usb webcam, my keyboard and mouse lagg both. It looks like the usb is being occupie...

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