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by trejan
Thu Jan 21, 2021 5:12 pm
Forum: General
Topic: New product Announcement!
Replies: 67
Views: 2966

Re: New product Announcement!

DVI streams? See https://github.com/Wren6991/picodvi Very impressive. I thought jamesh was referring to individual TMDS links at first and was a bit puzzled as to how it would work. How long before somebody bolts a NES emulator onto that code? Admittedly it isn't very practical since a Pi Zero woul...
by trejan
Thu Jan 21, 2021 4:53 pm
Forum: General
Topic: New product Announcement!
Replies: 67
Views: 2966

Re: New product Announcement!

jamesh wrote:
Thu Jan 21, 2021 10:49 am
The PIO is very powerful, but we also have HW PWM, HW interpolators and HW dividers, all which means a Pico can actually, for example, output two DVI streams at once.
DVI streams?
by trejan
Sun Jan 03, 2021 1:37 am
Forum: Python
Topic: readchar at boot
Replies: 6
Views: 453

Re: readchar at boot

And so insecure. Especially when using the default "pi" user. Anyone with physical access to the machine has unrestricted access to sudo. You'd better open an issue asking for removal of the autologin option from raspi-config since its so dangerous in your view. If somebody malicious has ...
by trejan
Sun Jan 03, 2021 12:42 am
Forum: Troubleshooting
Topic: spidev: "Empty Argument List"
Replies: 4
Views: 208

Re: spidev: "Empty Argument List"

I'm not understanding why I'm getting the following error. Have tried xfer and xfer2. Traceback (most recent call last): File "spi.py", line 31, in <module> readReg = spi.xfer2(0x06,0x00) TypeError: Empty argument list. xfer2 is expecting the first argument to be a list but you're giving ...
by trejan
Sun Jan 03, 2021 12:01 am
Forum: Compute Module
Topic: Retro Lite CM4: Handheld Gaming Console
Replies: 99
Views: 8739

Re: Retro Lite CM4

StonedEdge wrote:
Sat Jan 02, 2021 3:36 pm
Ah, let me quickly fix the broken links.
EDIT: Fixed! Hopefully you can see them now on the first page.
Looks good.
by trejan
Sat Jan 02, 2021 3:30 pm
Forum: Compute Module
Topic: Retro Lite CM4: Handheld Gaming Console
Replies: 99
Views: 8739

Re: Retro Lite CM4

StonedEdge wrote:
Sat Jan 02, 2021 5:38 am
Here's a couple more pictures of progress. We finished the CAD work together to replicate the switch lite as much as possible.
You're linking to photos hosted on another forum and it requires you to be logged in to see them.
by trejan
Sat Jan 02, 2021 1:35 am
Forum: General discussion
Topic: GPS NEO-6M module and Pi using micro USB
Replies: 26
Views: 1073

Re: GPS NEO-6M module and Pi using micro USB

Well I do only have one Ublox gps module connected, but there is also a cellular modem and an esp device that I plan to add. So this may affect the port designations. The /dev/serial/by-id link won't conflict as it is named after the device description so you'd always get the Ublox GPS if you use t...
by trejan
Sat Jan 02, 2021 1:12 am
Forum: General discussion
Topic: GPS NEO-6M module and Pi using micro USB
Replies: 26
Views: 1073

Re: GPS NEO-6M module and Pi using micro USB

I see the suggestion to use /dev/serial/by-id/ instead. But what if I have 4 serial devices? Can I force the GPS module to a port? If you only have 1 Ublox GPS connected then you can use /dev/serial/by-id/usb-u-blox-blahblah instead of /dev/ttyACM0 No need to add a special udev rule for it as it'll...
by trejan
Sat Jan 02, 2021 12:24 am
Forum: General discussion
Topic: GPS NEO-6M module and Pi using micro USB
Replies: 26
Views: 1073

Re: GPS NEO-6M module and Pi using micro USB

lsusb.JPG Thanks for the suggestion I can see the U-Blox device when I do the lsusb command. If it is being detected then you next step is to change your code to use the correct port. Beware that the port numbering may change if you add other ACM devices like that Arduino. Use the automatically gen...
by trejan
Sat Jan 02, 2021 12:18 am
Forum: General discussion
Topic: GPS NEO-6M module and Pi using micro USB
Replies: 26
Views: 1073

Re: GPS NEO-6M module and Pi using micro USB

Feynman137 wrote:
Sat Jan 02, 2021 12:04 am
I went ahead and tried the code, and looks like the shell is just printing blank values.
You're using ttyAMA0 which is the onboard Pi serial port. It isn't the GPS.
by trejan
Sat Jan 02, 2021 12:13 am
Forum: General discussion
Topic: GPS NEO-6M module and Pi using micro USB
Replies: 26
Views: 1073

Re: GPS NEO-6M module and Pi using micro USB

ls -l /dev and along with other outputs the devices were listed: devices.JPG So it does appear that the device is connected. No. You're seeing the onboard serial port (ttyAMA0) of the Pi and the serial port for your Arduino (ttyACM0). The GPS would show up in lsusb if it was working. It should look...
by trejan
Fri Jan 01, 2021 10:54 pm
Forum: Troubleshooting
Topic: 3+b tv tophat problems
Replies: 4
Views: 133

Re: 3+b tv tophat problems

How do I do that? You need to log into the tvheadend web UI then manually add the muxes with the correct frequencies. The rest of the settings can be AUTO from what I remember. ukfree.tv should have lists of the frequencies used. Also does it have to be connected to WIFI to work? Or will it work of...
by trejan
Fri Jan 01, 2021 10:41 pm
Forum: Python
Topic: readchar at boot
Replies: 6
Views: 453

Re: readchar at boot

Use raspi-config to set it to auto log in as your user to the text console then add your program to .profile so it will auto start whenever you log in.
by trejan
Fri Jan 01, 2021 7:54 pm
Forum: Troubleshooting
Topic: 3+b tv tophat problems
Replies: 4
Views: 133

Re: 3+b tv tophat problems

You need to manually add/update the muxes for your area. The ones that come with tvheadend are out of date.
by trejan
Fri Jan 01, 2021 7:29 pm
Forum: Troubleshooting
Topic: VLC 3.0.11 Vetinari does not have GPU acceleration at all on raspberry pi 3
Replies: 7
Views: 222

Re: VLC 3.0.11 Vetinari does not have GPU acceleration at all on raspberry pi 3

The dkpg is indeed different too: dpkg -l vlc Voluto=U (non noto)/I (installato)/R (rimosso)/P (rimosso totale)/H (in attesa) | Stato=Non/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(nessuno)/R (reinstallazione richiesta) (Stato,Err: maiuscolo=grave) ||/ Nome Versione ...
by trejan
Fri Jan 01, 2021 6:40 pm
Forum: Troubleshooting
Topic: VLC 3.0.11 Vetinari does not have GPU acceleration at all on raspberry pi 3
Replies: 7
Views: 222

Re: VLC 3.0.11 Vetinari does not have GPU acceleration at all on raspberry pi 3

Your VLC doesn't appear to be the Raspberry Pi build as the build date + compiler version are both old. The compiled by string is also odd looking. Are you running Raspberry Pi OS? What version is your OS? Run "dpkg -l vlc" and paste the version number here. The correct version should be &...
by trejan
Fri Jan 01, 2021 5:13 pm
Forum: C/C++
Topic: Problem using libgpiod
Replies: 38
Views: 11511

Re: Problem using libgpiod

GPIOD_CTXLESS_FLAG_BIAS_PULL_UP seems to be not supported on Raspberry Pi 3b+. My system is Raspbian GNU/Linux bullseye/sid Linux raspberrypi 5.4.79-v7+ #1373 SMP Mon Nov 23 13:22:33 GMT 2020 armv7l GNU/Linux libgpiod-dev:armhf 1.6.2-1+rpi1 armhf You need a newer kernel such as 5.10 available from ...
by trejan
Fri Jan 01, 2021 3:00 am
Forum: General discussion
Topic: how do i install modem driver? Rockwell
Replies: 17
Views: 545

Re: how do i install modem driver? Rockwell

comet424 wrote:
Thu Dec 31, 2020 5:15 pm

Code: Select all

pi@raspberrypi:~ $ sudo minicom -d /dev/ttyACM0
It is D not d.

Code: Select all

  -D, --device           : set device name (ignore the value from config)
...
  -d, --dial=ENTRY       : dial ENTRY from the dialing directory
by trejan
Fri Jan 01, 2021 1:56 am
Forum: Advanced users
Topic: /dev/gpiomem documentation
Replies: 1
Views: 134

Re: /dev/gpiomem documentation

I have searched, but failed to find any Documentation on its use - is there any? /dev/gpiomem is a shortcut for mapping the GPIO peripheral memory range as it automatically uses the appropriate memory address . The alternative is to use /dev/mem but that requires root and you need to work out the a...
by trejan
Wed Dec 23, 2020 5:21 am
Forum: Advanced users
Topic: File affiliation for /usr/lib/firmware/updates/brcm/*
Replies: 2
Views: 383

Re: File affiliation for /usr/lib/firmware/updates/brcm/*

$ dpkg -S /lib/firmware/brcm/* bluez-firmware: /lib/firmware/brcm/BCM43430A1.hcd bluez-firmware: /lib/firmware/brcm/BCM43430B0.hcd bluez-firmware: /lib/firmware/brcm/BCM4345C0.hcd bluez-firmware: /lib/firmware/brcm/BCM4345C5.hcd firmware-brcm80211: /lib/firmware/brcm/bcm43xx-0.fw firmware-brcm80211...
by trejan
Tue Dec 22, 2020 9:02 pm
Forum: General discussion
Topic: Raspberry pi zero hex spacers
Replies: 4
Views: 197

Re: Raspberry pi zero hex spacers

You need M2.5 for the Pi mounting holes.
by trejan
Tue Dec 22, 2020 5:22 am
Forum: General discussion
Topic: how do i install modem driver? Rockwell
Replies: 17
Views: 545

Re: how do i install modem driver? Rockwell

https://www.amazon.ca/StarTech-com-USB5 ... B01MYLE06I should work on a Pi as CX93010 is a full hardware modem controller. USR5637 is supposedly compatible as well but significantly more expensive.
by trejan
Tue Dec 22, 2020 4:58 am
Forum: General discussion
Topic: how do i install modem driver? Rockwell
Replies: 17
Views: 545

Re: how do i install modem driver? Rockwell

You can't. You've got a Conexant soft modem which is a cost reduced design that is effectively a special purpose sound card with a telephone interface. All of the modem functionality was in software that ran on the host and the Linux driver was distributed as a large closed source binary module that...
by trejan
Tue Dec 22, 2020 12:40 am
Forum: Media centres
Topic: Is it not possible to use the Raspberry Pi 4 as a chromecast?
Replies: 5
Views: 2593

Re: Is it not possible to use the Raspberry Pi 4 as a chromecast?

TL;DR version: No. Buy a real Chromecast/Roku/FireTV/AppleTV if you want to stream Netflix. All of the mainstream apps like Netflix uses the Google Cast library for streaming to a Chromecast which will authenticate the device first before streaming. If it can't verify that it is a real Chromecast th...

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