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by mooblie
Thu Aug 06, 2020 7:21 pm
Forum: Device Tree
Topic: How to set GPIO Output to LOW at shutdown
Replies: 7
Views: 626

Re: How to set GPIO Output to LOW at shutdown

rudiratlos wrote:
Thu Aug 06, 2020 3:24 pm
it's already mounted on a pcb. Using a different GPIO or using a pnp is not possibel.
Can you not cut a PCB track and rewire it to a different GPIO pin?

It's not hard (unless it's surface-mount sized!)
by mooblie
Thu Aug 06, 2020 6:20 pm
Forum: Troubleshooting
Topic: GPIO15 high from beginning
Replies: 11
Views: 392

Re: GPIO15 high from beginning

I agree with Dead1nsid3: Can you not just use another GPIO pin (that does NOT have a possible alternative function) if you are using discrete wires to the GPIO pins? (Or are you working with a PCB of your own design, and cutting tracks is not on?) In one project, I used GPIO 07 and 11: GPIO 07 (corr...
by mooblie
Wed Aug 05, 2020 7:22 pm
Forum: Troubleshooting
Topic: Waveshare 7''' HDMI LCD (C) not working with Raspberri Pi 4B
Replies: 5
Views: 548

Re: Waveshare 7''' HDMI LCD (C) not working with Raspberri Pi 4B

Just something to check: you haven't accidentally switched off the backlight?
by mooblie
Fri Jul 31, 2020 12:18 am
Forum: Troubleshooting
Topic: tools for signal quality on an ethernet port?
Replies: 3
Views: 168

Re: tools for signal quality on an ethernet port?

Code: Select all

sudo ethtool eth0
...doesn’t give you quality levels, but does give you some basic status information.
by mooblie
Wed Jul 29, 2020 10:34 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: PiFi DAC+ driver
Replies: 2
Views: 359

Re: PiFi DAC+ driver

It is, I believe, compatible with (i.e. same driver/software settings) as the HiFiBerry DAC+ Pro.
by mooblie
Sat Jul 25, 2020 9:35 pm
Forum: General discussion
Topic: What to do with rpi 1 B in 2020?
Replies: 15
Views: 1069

Re: What to do with rpi 1 B in 2020?

Pihole?

Discussions there about which models are OK. Basically: any model Pi will do the job reasonably.

https://discourse.pi-hole.net/t/what-mo ... -hole/9635
by mooblie
Fri Jul 24, 2020 9:13 pm
Forum: Beginners
Topic: Re: Looking a screen for Raspberry Pi Zero W [spam]
Replies: 6
Views: 410

Re: Looking a screen for Raspberry Pi Zero W

Good work! and good job at kicking him off!

Might be worth putting a placeholder explanatory post AT THE TOP of the thread, as it reads strangely currently, the way it has been left, with the first post = an answer to a non-existent post.
by mooblie
Fri Jul 24, 2020 9:05 pm
Forum: Beginners
Topic: Hardware upgrade without reloading the OS?
Replies: 4
Views: 296

Re: Hardware upgrade without reloading the OS?

Whilst I agree, the "best" thing might be to bite the bullet and come up to date with current PIs and software, I have to say:

Can you not just find old (working, yet cheap) versions of Pis 1/2/whatever on, say, eBay or somewhere similar?
by mooblie
Fri Jul 24, 2020 8:42 pm
Forum: Troubleshooting
Topic: TP-link Wifi dongle (RTl8812au) not seeing all wifi networkss
Replies: 10
Views: 516

Re: TP-link Wifi dongle (RTl8812au) not seeing all wifi networkss

Do you have, say, a Windows10 PC you could plug your adapter into, to find out what networks THAT sees?

It would help determine if the problem is your networks, the adapter, the Pi, PiOS, etc...etc...
by mooblie
Thu Jul 23, 2020 11:48 am
Forum: Graphics, sound and multimedia
Topic: Asking about compatability for a project I have in mind.
Replies: 15
Views: 753

Re: Asking about compatability for a project I have in mind.

Yes, that looks like the I2C controller - it's a common part. Available cheaper on eBay, but I don't know where you are: https://www.ebay.co.uk/itm/I2C-1602-LCD-Board-Module-16x2-Character-LCD-Display-Module-HD44780-Controller/153490875020?hash=item23bcc4e28c:g:lPcAAOSw02Vc3NdS It drives either the ...
by mooblie
Thu Jul 23, 2020 6:23 am
Forum: Graphics, sound and multimedia
Topic: Asking about compatability for a project I have in mind.
Replies: 15
Views: 753

Re: Asking about compatability for a project I have in mind.

This one says Pi compatible, but they all are. They’re all the same devices, including that I2C module on the back. You can select 16x2 or 20x4 in the item selection menu on eBay: https://www.ebay.co.uk/itm/LCD-I2C-Display-1602-or-2004-Blue-ideal-for-Arduino-or-Raspberry-Pi-UK-Seller/153437390872?ha...
by mooblie
Thu Jul 23, 2020 5:32 am
Forum: Graphics, sound and multimedia
Topic: Asking about compatability for a project I have in mind.
Replies: 15
Views: 753

Re: Asking about compatability for a project I have in mind.

Seems very expensive. Is the “rgb” backlight facility essential for you? If not, such displays cost about 7 GBP - including an I2C interface that gives your a four- or five- wire interface to the Pi. No hat needed. https://www.ebay.co.uk/itm/With-Without-IIC-I2C-2004-20X4-Character-LCD-Module-Displa...
by mooblie
Tue Jul 21, 2020 7:11 pm
Forum: Beginners
Topic: Teamviewer on Raspberry Pi? [obsolete]
Replies: 10
Views: 4309

Re: Teamviewer on Raspberry Pi? [obsolete]

VNC, not VHC. (just for info.) :x
by mooblie
Sun Jul 19, 2020 11:12 pm
Forum: Beginners
Topic: Sense HAT + Argon One Case?
Replies: 14
Views: 572

Re: Sense HAT + Argon One Case?

Just stack one or more of these ? - a 2x20 male-to-female header: UK: https://www.ebay.co.uk/itm/232575164343 or Germany: https://www.ebay.de/itm/232575164343 http://www.headspin.plus.com/forums/2x20-header.jpg ...or a right-angled version, if you want to avoid your hat being directly over the Pi: h...
by mooblie
Sun Jul 19, 2020 7:33 pm
Forum: Beginners
Topic: Sense HAT + Argon One Case?
Replies: 14
Views: 572

Re: Sense HAT + Argon One Case?

Isn't there a magnetically-attached access panel on the Argon One case, revealing the 40-pin GPIO connector?
by mooblie
Sat Jul 11, 2020 10:44 pm
Forum: General discussion
Topic: HDMI cable and Pi4b case
Replies: 5
Views: 265

Re: HDMI cable and Pi4b case

This shows two similar, but different, Pi4 cases:

Image

Guess which one has problems with HDMI cables? Which is your case like?
by mooblie
Fri Jul 10, 2020 10:04 pm
Forum: General discussion
Topic: How to interface two RPIs to outsource some tasks
Replies: 6
Views: 237

Re: How to interface two RPIs to outsource some tasks

I am rather "old school" and may be talking nonsense, but anyway:

If you're after maximising throughput, surely as a first step, a compiled language such as C - or a variant - is going to be substantially faster than an interpreted language like Python?
by mooblie
Sun Jun 14, 2020 6:57 pm
Forum: Troubleshooting
Topic: PI4 no signal on new Sony tv
Replies: 18
Views: 988

Re: PI4 no signal on new Sony tv

I would suggest getting a new SD card (not expensive, and it will always be useful in the future) and burning a new virgin copy of Raspberry PiOS onto it, and trying that. Get the hardware going first, and once that's OK, THEN swap back to your original SD card, and investigate the configuration iss...
by mooblie
Tue Jun 02, 2020 7:24 pm
Forum: Troubleshooting
Topic: Can't set up Pi Zero in headless mode!
Replies: 15
Views: 655

Re: Can't set up Pi Zero in headless mode!

Yes, I've just added a link in my previous post to another article about using the PiZero in gadget mode - as I assume Tom's Hardware guide attempt, and as rpdom helpfully suggested above too.

Sorry I haven't' ever done that myself - can't help much more...
by mooblie
Tue Jun 02, 2020 7:19 pm
Forum: Troubleshooting
Topic: Can't set up Pi Zero in headless mode!
Replies: 15
Views: 655

Re: Can't set up Pi Zero in headless mode!

True, you don't HAVE to connect it to the internet to do some projects, but you have a choice: - either run it headless, and use your inhouse network to talk to it from another computer, or - connect a keyboard and screen to the Pi directly, and run it in complete isolation, or - connect it via USB ...
by mooblie
Tue Jun 02, 2020 7:09 pm
Forum: Troubleshooting
Topic: Can't set up Pi Zero in headless mode!
Replies: 15
Views: 655

Re: Can't set up Pi Zero in headless mode!

Just scanning your post - if it's a PiZero (NOT W), how are you expecting to connect it to your network? Am I missing something obvious here, or are you?? :) You need to add either: - a USB-to-wired Ethernet dongle, and an Ethernet patch cable to your router, or - a USB-wifi dongle (in which case th...
by mooblie
Sun May 24, 2020 6:20 pm
Forum: General discussion
Topic: Chromium UI Scaling
Replies: 5
Views: 656

Re: Chromium UI Scaling

On Raspbian Desktop, have you tried Preferences menu: Raspberry Pi Configuration: Display: Pixel Doubling? It will affect the display size of everything, and you may have to set a lot of the things you've already done back to "normal" but it works well for me on a large HD TV screen across the livin...
by mooblie
Mon May 18, 2020 9:20 pm
Forum: Beginners
Topic: raspberry pi zero and ssh
Replies: 10
Views: 396

Re: raspberry pi zero and ssh

https://elinux.org/RPi_USB_Ethernet_adapters ...and of course, if you look through the reviews of the cheap adapters on Amazon, the successful use on a Pi is often confirmed. If you can identify the chip used inside a working adapter, then find a cheap no-name model with the same chip (on eBay or Al...
by mooblie
Mon May 18, 2020 5:33 pm
Forum: Beginners
Topic: raspberry pi zero and ssh
Replies: 10
Views: 396

Re: raspberry pi zero and ssh

I guess it's not a Pi Zero W? so you could try WiFi instead of wired? Maybe you'll have to connect a keyboard and screen directly to the Pi Zero, at least temporarily, to see what's going on. Maybe the USB-to-Ethernet dongle you have is not compatible with the Pi's OS? You haven't got the power inpu...
by mooblie
Mon May 18, 2020 4:20 pm
Forum: Beginners
Topic: raspberry pi zero and ssh
Replies: 10
Views: 396

Re: raspberry pi zero and ssh

Did you put an empty file named "ssh" in the /boot/ root folder before you tried this?

Easiest to do this with the PC when you first burn the SD card.

Also: does a network monitor program (from another device on the network) show the Pi Zero as having been issued with an IP address?

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