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by aBUGSworstnightmare
Thu Aug 22, 2019 11:58 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Replace a component
Replies: 3
Views: 88

Re: Replace a component

Thats a 220uF capacitor, rated at 16V (if I'm right from my mind) Package type is D8. Can't give a recommendation where to buy it as I don't know ypour location. https://www.digikey.com/products/en/capacitors/aluminum-electrolytic-capacitors/58?k=&pkeyword=&sv=0&pv2049=u220%C2%B5F&pv2079=u16V&pv16=1...
by aBUGSworstnightmare
Thu Aug 22, 2019 11:50 am
Forum: Compute Module
Topic: PI 4 Compute module with pci-e?
Replies: 37
Views: 7621

Re: PI 4 Compute module with pci-e?

My biggest concern despite the pci-e is the backward compatibility. Whatever happens and created, should be backward compatible :)!! backward compatibility at the sake of loosing new features makes no sense .. So for exiting stuff one can keep using CM3/CM3+ and for new stuff they can use CM4 (if i...
by aBUGSworstnightmare
Wed Aug 21, 2019 7:46 pm
Forum: Compute Module
Topic: Power supply sequencing.
Replies: 1
Views: 253

Re: Power supply sequencing.

So your VBAT is 3.3V, correct? Why should that be a problem when boosting it to 5V?
by aBUGSworstnightmare
Wed Aug 21, 2019 6:58 pm
Forum: Troubleshooting
Topic: 4k 60 hz is not listed, only 30hz
Replies: 32
Views: 1872

Re: 4k 60 hz is not listed, only 30hz

Jamesh wants to know if your typing in config.txt is correct. have a look here for details https://www.raspberrypi.org/documentation/configuration/config-txt/video.md#Custom%20Mode What's the output for 'tvservice -m DMT'? Ah, thanks! :D I did a clean installation and added the code with "sudo rasp...
by aBUGSworstnightmare
Wed Aug 21, 2019 12:13 pm
Forum: Troubleshooting
Topic: 4k 60 hz is not listed, only 30hz
Replies: 32
Views: 1872

Re: 4k 60 hz is not listed, only 30hz

Jamesh wants to know if your typing in config.txt is correct.
have a look here for details https://www.raspberrypi.org/documentati ... tom%20Mode

What's the output for 'tvservice -m DMT'?
by aBUGSworstnightmare
Wed Aug 21, 2019 4:13 am
Forum: HATs and other add-ons
Topic: LVDS add-on for Raspberry models with 40pin GPIO
Replies: 79
Views: 53970

Re: LVDS add-on for Raspberry models with 40pin GPIO

Search the web for JEIDA and for VESA data mapping in LVDS. Your LVDS transmitter is not able to switch between the two standard mappings as LVDS data mapping is defined by HW connections EDIT: VESA mapping is the first picture in this post https://www.raspberrypi.org/forums/viewtopic.php?f=45&t=157...
by aBUGSworstnightmare
Tue Aug 20, 2019 8:25 am
Forum: General discussion
Topic: Accessing an external drive on the Pi4 from Finder on a Mac
Replies: 6
Views: 160

Re: File and screen sharing Pi 4 and a Mac

This is using Bonjour service. Should work on the Pi4 as well (if configured correctly)
by aBUGSworstnightmare
Mon Aug 19, 2019 5:10 pm
Forum: HATs and other add-ons
Topic: LVDS add-on for Raspberry models with 40pin GPIO
Replies: 79
Views: 53970

Re: LVDS add-on for Raspberry models with 40pin GPIO

1. Check your LVDS data mapping is correct
2. Check if rbg_order in dpi_output_format is matching your HW connections

My guess is 1.
by aBUGSworstnightmare
Sat Aug 17, 2019 7:31 am
Forum: HATs and other add-ons
Topic: LVDS add-on for Raspberry models with 40pin GPIO
Replies: 79
Views: 53970

Re: LVDS add-on for Raspberry models with 40pin GPIO

With wrong timings you can have everything: random data to no display at all.

You have a timing chart, so start working from this.
by aBUGSworstnightmare
Thu Aug 15, 2019 10:28 pm
Forum: HATs and other add-ons
Topic: LVDS add-on for Raspberry models with 40pin GPIO
Replies: 79
Views: 53970

Re: LVDS add-on for Raspberry models with 40pin GPIO

What you've posted here is no timing data! It's the LVDS mapping - which is VESA btw.

You will need to have timing data (see an example here https://www.raspberrypi.org/forums/memb ... e&u=152468) of your screen; without you're screwed up
by aBUGSworstnightmare
Thu Aug 15, 2019 10:22 pm
Forum: Compute Module
Topic: Expandable baseboard (slot system) for CM3
Replies: 30
Views: 14097

Re: Expandable baseboard (slot system) for CM3

There are tons of options out there, so it's up to you to make your choice.

Sorry, but as I've not decided what to do with this board main HW features will not be disclosed.
by aBUGSworstnightmare
Thu Aug 15, 2019 10:17 pm
Forum: General discussion
Topic: Can't change screen resolution on the fly?
Replies: 3
Views: 247

Re: Can't change screen resolution on the fly?

You need to enable FMKS driver. Screen configuration tool will then allow you to switch between the resolutions read from EDID.
by aBUGSworstnightmare
Thu Aug 15, 2019 6:51 am
Forum: HATs and other add-ons
Topic: LVDS add-on for Raspberry models with 40pin GPIO
Replies: 79
Views: 53970

Re: LVDS add-on for Raspberry models with 40pin GPIO

Hi, I know MichaR's schematic and the LVDS transmittter he's using. Make sure it's control signals are correct (data mapping i.e,) for your display. As I'm using a different transmitter on my expansion board for the LVDS4CM3L board (https://www.raspberrypi.org/forums/viewtopic.php?t=188450#p1385429)...
by aBUGSworstnightmare
Wed Aug 14, 2019 7:24 pm
Forum: General discussion
Topic: Official Keyboard and mouse
Replies: 33
Views: 820

Re: Official Keyboard and mouse

Tempted to say ‘it’s a hackers solution’ but I won’t :lol: Neat idea - maybe a market for a mk2 keyboard - main issue is that moulding is not cheap though and this would be a specialist need I think due to the lack of access to the GPIO else it would have been great for schools etc as an all in one...
by aBUGSworstnightmare
Wed Aug 14, 2019 6:45 pm
Forum: General discussion
Topic: Official Keyboard and mouse
Replies: 33
Views: 820

Re: Official Keyboard and mouse

... Anyhow, would have been great if the keyboard chassis would have allowed to mount a Pi3A+ inside (with the required openings i.e. By breakout taps). Should have been possible from the injection mold POV. Like this https://blog.pimoroni.com/putting-a-raspberry-pi-3-a-in-the-raspberry-pi-keyboard...
by aBUGSworstnightmare
Wed Aug 14, 2019 6:40 pm
Forum: General discussion
Topic: Official Keyboard and mouse
Replies: 33
Views: 820

Re: Official Keyboard and mouse

I have three sets in total: two red ones and one black. Mices work nice, as keyboard too. Pretty much enjoy the USB hub which makes life a little easier. Anyhow, would have been great if the keyboard chassis would have allowed to mount a Pi3A+ inside (with the required openings i.e. By breakout taps...
by aBUGSworstnightmare
Wed Aug 14, 2019 9:51 am
Forum: Graphics, sound and multimedia
Topic: Pi 4 to sync 2 HD videos ?
Replies: 2
Views: 228

Re: Pi 4 to sync 2 HD videos ?

What means 'synced'? Frame synced i.e. or ??? write a script which starts two omxplayers, each of them writing to another HDMI (HDMI0=2, HDMI1=7) omxplayer --display=4 --win "0 0 800 480" /home/pi/Videos/trailer_1080p.mov omxplayer --display=7 --win "0 0 1280 1024" /home/pi/Videos/trailer_1080p.mov ...
by aBUGSworstnightmare
Mon Aug 12, 2019 12:57 pm
Forum: General discussion
Topic: 'Sniffing' Serial Commands?
Replies: 25
Views: 736

Re: 'Sniffing' Serial Commands?

Such com is (usually) encrypted --> you need to figure out the key first.
by aBUGSworstnightmare
Mon Aug 12, 2019 7:22 am
Forum: Advanced users
Topic: Switching 1920X1080(horizontal) to 1080x1920(vertical)
Replies: 4
Views: 193

Re: Switching 1920X1080(horizontal) to 1080x1920(vertical)

Are you on Buster (https://www.raspberrypi.org/downloads/raspbian/)? Uncomment [all] dtoverlay=vc4-fkms-v3d to make use of the new driver. Reboot, open screen configuration tool, use it to rotate your screen into tge desired orientation, click the apply button (green) and you should be on portrait. ...
by aBUGSworstnightmare
Mon Aug 12, 2019 4:50 am
Forum: Troubleshooting
Topic: RP4 works on Monitor but not Vizio HDTV
Replies: 6
Views: 187

Re: RP4 works on Monitor but not Vizio HDTV

Add

Code: Select all

hdmi_enable_4kp60=1
to your config.txt to see if it makes a difference
by aBUGSworstnightmare
Mon Aug 12, 2019 4:31 am
Forum: General discussion
Topic: Using 2 Displays with the Pi4
Replies: 3
Views: 229

Re: Using 2 Displays with the Pi4

Don't know if it is really working that way, but:
Open screen configuration tool
Put your two desktops on top of each other
Click the button with the green check mark

Your screen should show the same content. Be warned that the taskbar may be incompletely display on the lower resolutiin screen
by aBUGSworstnightmare
Sun Aug 11, 2019 3:22 pm
Forum: General discussion
Topic: 'Sniffing' Serial Commands?
Replies: 25
Views: 736

Re: 'Sniffing' Serial Commands?

Why not let us know what you're trying to connect to? Interpreting the data is the big task. Once you think you found something send the command to yiur unit and see if it reacts correctly. If not you'll have to start over. I've used a logic analyzer in the past for reverse engineering some serial c...
by aBUGSworstnightmare
Sun Aug 11, 2019 1:00 pm
Forum: General discussion
Topic: 'Sniffing' Serial Commands?
Replies: 25
Views: 736

Re: 'Sniffing' Serial Commands?

You should get hands on something like this https://www.saleae.com/
by aBUGSworstnightmare
Sun Aug 11, 2019 12:03 pm
Forum: Official Foundation Display
Topic: Dimensions of touchscreen without bezel?
Replies: 4
Views: 265

Re: Dimensions of touchscreen without bezel?

What is the bezel from your POV?
by aBUGSworstnightmare
Sun Aug 11, 2019 7:57 am
Forum: Troubleshooting
Topic: HDMI wont display
Replies: 6
Views: 173

Re: HDMI wont display

You are mentioning two displays: a 32in TV and a 27in dell monitor. So what you need to provide is the info on your monitors and TVs resolution. without knowing that (and in case of wrong EDID data) we can't help you as it's a never-ending guessing game. Have you tested them individually already (on...

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