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by Doogals
Sat Apr 07, 2018 4:07 am
Forum: Troubleshooting
Topic: SOLVED!: HDMI Boot Sequence (10.1" LCD)
Replies: 10
Views: 843

Re: HDMI Boot Sequence (10.1" LCD)

Not really a correct location. I put new commands at the end so I can easily find them. I ended up replacing the # before the comment, and left the # omitted before the command, like so: #Force HDMI even if unplugged or powered off hdmi_force_hotplug=1 Everything seemed to be working fine with the ...
by Doogals
Sat Mar 31, 2018 1:12 am
Forum: Troubleshooting
Topic: SOLVED!: HDMI Boot Sequence (10.1" LCD)
Replies: 10
Views: 843

Re: HDMI Boot Sequence (10.1" LCD)

klricks wrote:
Fri Mar 30, 2018 9:47 pm
Though quite a few commands are obvious as to what they do, so no need to comment everything.
What is considered the “correct” location in config.txt for adding new commands? At the bottom under all of the comments?
by Doogals
Fri Mar 30, 2018 8:09 pm
Forum: Troubleshooting
Topic: SOLVED!: HDMI Boot Sequence (10.1" LCD)
Replies: 10
Views: 843

Re: HDMI Boot Sequence (10.1" LCD)

You should not take the # from the first line. That is just a comment. When there is a # then the rest of the line is ignored. Without the # the system tries to run it as a command which is isn't. That could lead to error messages or unexpected results. So I’ve changed the comment that explains wha...
by Doogals
Fri Mar 30, 2018 6:15 pm
Forum: Troubleshooting
Topic: SOLVED!: HDMI Boot Sequence (10.1" LCD)
Replies: 10
Views: 843

Re: HDMI Boot Sequence (10.1" LCD)

There is a way around this. You can make the Pi read the monitor configuration from a file instead of from the monitor itself. Also just FYI, I did first attempt to execute this command over SSH but was not successful. PuTTY first returned the result that sudo was not required when using LibreELEC,...
by Doogals
Fri Mar 30, 2018 6:00 pm
Forum: Troubleshooting
Topic: SOLVED!: HDMI Boot Sequence (10.1" LCD)
Replies: 10
Views: 843

Re: HDMI Boot Sequence (10.1" LCD)

If the above is a Copy & Paste from your config.txt then hotplug is disabled. You have to remove the # to enable the command. It sure is, I copied and pasted just to make sure the code was correct and turns out it wasn’t. I removed the # from both lines and now it’s working absolutely flawless. Tha...
by Doogals
Fri Mar 30, 2018 3:57 pm
Forum: Troubleshooting
Topic: SOLVED!: HDMI Boot Sequence (10.1" LCD)
Replies: 10
Views: 843

SOLVED!: HDMI Boot Sequence (10.1" LCD)

I have a Pi3 running LibreELEC connected to a 10.1" portable DVD player via HDMI, both are connected to the same 12V DC (in-car) power source. The 10.1" DVD player only seems to recognize the HDMI signal if it's powered on before the Pi3 boots up, however both devices are always powered on at the sa...
by Doogals
Mon Mar 19, 2018 5:29 am
Forum: General discussion
Topic: In-Car Use: SD Corruption?
Replies: 14
Views: 1376

Re: In-Car Use: SD Corruption?

Follow-Up: I've uploaded a video of testing this setup that shows the voltage and current readings:

viewtopic.php?f=46&t=207962&p=1288231#p1288231
by Doogals
Mon Mar 19, 2018 5:25 am
Forum: General discussion
Topic: Qualcomm Quick Charge 3.0 charger
Replies: 13
Views: 7080

Re: Qualcomm Quick Charge 3.0 charger

Imperf3kt wrote:
Sun Mar 18, 2018 8:30 pm
I know of no voltmeter that measures in amps. That is a job for an ammeter.
*USB multimeter. I've uploaded a video of testing this setup that shows the voltage and current readings:

viewtopic.php?f=46&t=207962&p=1288231#p1288231
by Doogals
Mon Mar 19, 2018 5:12 am
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

Re: In-Car Power: DC-DC Converter?

I've started testing this setup (see video link below) RPi 3 is connected to USB multimeter, which is connected to Quick Charge 3.0 USB port on 12V DC splitter. Note the DC splitter is connected to an AC/DC converter for testing purposes only, and the 10.1" screen is also connected to AC outlet but ...
by Doogals
Sun Mar 18, 2018 1:17 pm
Forum: General discussion
Topic: Qualcomm Quick Charge 3.0 charger
Replies: 13
Views: 7080

Re: Qualcomm Quick Charge 3.0 charger

DougieLawson wrote:
Sat Mar 17, 2018 2:26 pm
The Zero with a WiFi dongle or a ZeroW may be marginal on that low current.
Ordered the 12V splitter and USB voltmeter, will post results and if the QC 3.0 ports are enough to power the RPi 3 or if a RPi Zero W is required.
by Doogals
Sat Mar 17, 2018 5:00 pm
Forum: General discussion
Topic: Qualcomm Quick Charge 3.0 charger
Replies: 13
Views: 7080

Re: Qualcomm Quick Charge 3.0 charger

Both will run fine on 1000mA. Thank you for confirming that. The power section of the FAQ says the recommended PSU current capacity is 1.2A, so I was hesitant about purchasing the 12V splitter I linked to because of the Quick Charge 3.0 USB ports that regulate current on demand. I am also going to ...
by Doogals
Sat Mar 17, 2018 2:17 pm
Forum: General discussion
Topic: Qualcomm Quick Charge 3.0 charger
Replies: 13
Views: 7080

Re: Qualcomm Quick Charge 3.0 charger

More to the point of the suitability of the device - a charger is not the same as a power supply - they do different jobs. Is the RPi Zero W more tolerant of using a charger as a power supply? I need temporary power for an in-car setup and considering this 12V splitter which has QC 3.0 USB ports to...
by Doogals
Fri Mar 16, 2018 9:24 pm
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

Re: In-Car Power: DC-DC Converter?

Imperf3kt wrote:
Thu Mar 15, 2018 3:00 am
If the Pi is the only thing you are powering, sure. But if you have other stuff, the inverter may be more desireable.
Here is a basic component layout of the setup:
2E7E4EF2-34F7-487F-8851-EBE3A81400FC.jpeg
2E7E4EF2-34F7-487F-8851-EBE3A81400FC.jpeg (60.38 KiB) Viewed 2288 times
by Doogals
Fri Mar 16, 2018 8:25 pm
Forum: General discussion
Topic: In-Car Use: SD Corruption?
Replies: 14
Views: 1376

Re: In-Car Use: SD Corruption?

The SD card is the issue here but if you prepare it for read only operation and you keep a backup (as an image) of the SD card, corruption in the file system should be easy to recover from. That is a really good idea, maybe even a spare SD card clone with the same image. Here is a basic layout draw...
by Doogals
Fri Mar 16, 2018 6:38 pm
Forum: General discussion
Topic: In-Car Use: SD Corruption?
Replies: 14
Views: 1376

Re: In-Car Use: SD Corruption?

I have never experienced hardware failures on SD cards due to power outages my self, though. So it sounds like worst case scenario would be permanent failure of the SD card and possibly the Pi Zero itself? I think this is acceptable risk considering the limited use of this setup and any lost data i...
by Doogals
Fri Mar 16, 2018 6:04 pm
Forum: General discussion
Topic: In-Car Use: SD Corruption?
Replies: 14
Views: 1376

Re: In-Car Use: SD Corruption?

I did consider a hardwired UPS solution to handle power for the Pi instead of relying on the ignition switch, but because this is a temporary setup that wil only used occasionally (and in different vehicles) I would like to keep it portable. I’m thinking the Pi Zero W might be a better choice here b...
by Doogals
Fri Mar 16, 2018 3:59 pm
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

Re: In-Car Power: DC-DC Converter?

But if you have other stuff, the inverter may be more desireable. So it turns out “QC 3.0” charging ports only output higher amperage to supported devices that have a proprietary Qualcomm chipset, and non-supported devices receive 1A-2.1A, so that’s not going to cut it. Here is another idea, would ...
by Doogals
Thu Mar 15, 2018 4:44 am
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

Re: In-Car Power: DC-DC Converter?

If the Pi is the only thing you are powering, sure. But if you have other stuff, the inverter may be more desireable. I actually have two 10.1” screens connected to the Pi via HDMI (for an in-car entertainment system running LibreELEC) and they are both powered by 12V... Maybe the best option here ...
by Doogals
Thu Mar 15, 2018 2:06 am
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

Re: In-Car Power: DC-DC Converter?

E: link shows a UBEC, I would expect that to work well given sufficient airflow for cooling. Thanks for checking, much appreciated. So it sounds like this DC-DC converter would be a better choice for powering the Pi than the inverter/AC adapter route? No sense going from DC to AC then back to DC co...
by Doogals
Thu Mar 15, 2018 12:50 am
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

Re: In-Car Power: DC-DC Converter?

Imperf3kt wrote:
Thu Mar 15, 2018 12:37 am
If it comes from China, its nothing but landfill.
I recently bought a 2.1A 'lighter socket' buck converter.
This could be checked using a digital multimeter before connecting the RPi correct?

Would you recommend using a DC inverter and the official power supply instead of this?
by Doogals
Thu Mar 15, 2018 12:42 am
Forum: General discussion
Topic: In-Car Use: SD Corruption?
Replies: 14
Views: 1376

Re: In-Car Use: SD Corruption?

Also if this is not considered a read only setup would it help changing the SD card to read only access?
by Doogals
Thu Mar 15, 2018 12:24 am
Forum: General discussion
Topic: In-Car Power: DC-DC Converter? [Video]
Replies: 11
Views: 2498

In-Car Power: DC-DC Converter? [Video]

Looking for a temporary in-car power solution and wondering if this 12V to 5V 3A converter would power a RPi 3?

https://www.amazon.ca/DROK-Converter-St ... B00C63TLCC

How would this compare to usig the official power supply and a 12V AC inverter?
by Doogals
Wed Mar 14, 2018 4:06 am
Forum: General discussion
Topic: In-Car Use: SD Corruption?
Replies: 14
Views: 1376

In-Car Use: SD Corruption?

What is the likelyhood of corrupting the SD card’s file system when occasionally using an RPi 3 in-car where power supply is controlled by the car’s ignition?

SD card is a Samsung Evo Plus 32GB loaded with LibreELEC and used for media storage.

Would this be considered a read-only setup?
by Doogals
Fri Mar 09, 2018 1:13 pm
Forum: Media centres
Topic: Dual Screen In-Car Setup (Pi 3)
Replies: 3
Views: 1435

Re: Dual Screen In-Car Setup (Pi 3)

HDMI video splitters definitely do exist, as pointed out by Mortimer, but I’m wondering if a digital vs analong signal would even make a difference at 1024x600?
by Doogals
Fri Mar 09, 2018 12:49 am
Forum: Media centres
Topic: Dual Screen In-Car Setup (Pi 3)
Replies: 3
Views: 1435

Dual Screen In-Car Setup (Pi 3)

Currently setting up a Pi 3 being used in a dual screen in-car entertainment system running Kodi. I purchased two 10.1” (1024x600) portable car DVD players than can share the same HDMI video source via a composite video cable connecting the two screens: https://www.amazon.ca/Super-Thin-Headrest-Wire...

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