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by drgeoff
Fri Dec 13, 2019 10:22 am
Forum: Beginners
Topic: Pi and DACs question [solved]
Replies: 14
Views: 299

Re: Pi and DACs question

If properly implemented, all four options in the opening post can give exactly the same audio quality.
by drgeoff
Wed Dec 11, 2019 11:29 pm
Forum: General discussion
Topic: Is it possible to use big sd cards like 256gb cards?
Replies: 7
Views: 269

Re: Is it possible to use big sd cards like 256gb cards?

Joseph C. wrote:
Wed Dec 11, 2019 11:00 pm
All I need to do is format it to FAT32 and I can use all the memory?
If putting an OS image on it, no need to format it first.

If for some reason you want to use NOOBS to install the OS(s) then the card should be FAT32 formatted first.
by drgeoff
Wed Dec 11, 2019 12:43 pm
Forum: Troubleshooting
Topic: My Rpi can't connect to the internet either ethernet or WiFi
Replies: 4
Views: 119

Re: My Rpi can't connect to the internet either ethernet or WiFi

deluxe87 wrote:
Mon Dec 09, 2019 8:05 pm

cat /etc/resolv.conf

Code: Select all

# Generated by resolvconf
domain Dlink
search Dlink lan
nameserver 255.255.255.255
There is your problem.
by drgeoff
Tue Dec 10, 2019 8:07 pm
Forum: Assistive technology and accessibility
Topic: Need component to pull ~1.5lbs an exact distance straight up
Replies: 4
Views: 214

Re: Need component to pull ~1.5lbs an exact distance straight up

How quickly and how exact for the distance could be pertinent factors.
by drgeoff
Tue Dec 10, 2019 3:30 pm
Forum: Advanced users
Topic: To docker or not to docker on raspberry pi?
Replies: 1
Views: 148

Re: To docker or not to docker on raspberry pi?

Using docker or a VM etc always adds extra overheads*. Whether that matters or not depends on what extra resources are available over and above what the application needs to run without docker, the VM or whatever.

* mainly memory and CPU cycles.
by drgeoff
Tue Dec 10, 2019 11:06 am
Forum: Advanced users
Topic: Secure app running on Pi
Replies: 9
Views: 360

Re: Secure app running on Pi

Hello, We have a compiled application, GUI, running on Pi. We will be putting that application on an SDCARD/Flash Disk/mSATA and giving away with Pi itself. We would like to protect that application to be copy/paste to another place for reverse engineering, etc. We thought of; 1- Use a strong passw...
by drgeoff
Tue Dec 10, 2019 10:53 am
Forum: Beginners
Topic: Can Etcher be installed onto a raspberry pi?
Replies: 4
Views: 167

Re: Can Etcher be installed onto a raspberry pi?

KMdS wrote:
Tue Dec 10, 2019 5:28 am
... so I found a workaround for now using dd to copy image files downloaded to my pi to a card. That should work for now as long as an image is available for the apps i want to install.
Etcher cannot install anything that cannot be installed by dd or an unzipper and dd.
by drgeoff
Tue Dec 10, 2019 10:31 am
Forum: Beginners
Topic: How to connect external disk to Raspberry Pi model B rev 1
Replies: 3
Views: 144

Re: How to connect external disk to Raspberry Pi model B rev 1

deepakdeshp wrote:
Tue Dec 10, 2019 10:27 am
My external HDD is powered by my laptop USB port.But the RP USB port may not be able to power it, hence the question how to power it and which external power supply to use for the same.
A USB hub with PSU.
by drgeoff
Tue Dec 10, 2019 8:46 am
Forum: Beginners
Topic: Is it okay if output pin receive current?
Replies: 3
Views: 160

Re: Is it okay if output pin receive current?

Hello everyone, I am new to raspberry pi and have a bad english, I am sorry. I just want to know is it okay if output pin receive current? If it is not okay, what will happened to raspberry pi? Thanks You Your question is not clear. When a GPIO pin is set as output and low it will sink current. Tha...
by drgeoff
Mon Dec 09, 2019 6:13 pm
Forum: General discussion
Topic: How does the Raspberry Pi work?
Replies: 17
Views: 483

Re: How does the Raspberry Pi work?

dickon wrote:
Mon Dec 09, 2019 6:09 pm
kenkrsme wrote:
Mon Dec 09, 2019 5:56 pm
magic
Specifically, magic smoke.
Yes, that is why it stops working if you let the magic smoke escape.
by drgeoff
Sun Dec 08, 2019 7:29 pm
Forum: General discussion
Topic: Asterisk on a Raspberry Pi
Replies: 7
Views: 295

Re: Asterisk on a Raspberry Pi

Google is your friend. Using a Sipura/Linksys/Cisco SPA3000/3102 or OBihai OBi110/OBi212/OBi312 to interface a POTS/PSTN line to Asterisk has been done by many people for years.
by drgeoff
Sat Dec 07, 2019 11:19 am
Forum: Troubleshooting
Topic: Installing x86 on ARM
Replies: 17
Views: 444

Re: Installing x86 on ARM

That tutorial should be deleted it's so far out of date. They're starting on a Linux X86 machine with https://www.raspberrypi.org/downloads/raspberry-pi-desktop/ and then getting WINE running on there. Out of date that tutorial may be but Dougie's statement "Starting on a Linux X86 machine ..." is ...
by drgeoff
Sat Dec 07, 2019 10:26 am
Forum: General discussion
Topic: Just received PI 4, can not get HDMI working
Replies: 13
Views: 432

Re: Just received PI 4, can not get HDMI working

GVD wrote:
Sat Dec 07, 2019 3:05 am
, and (2) PI 4 HDMI to USB-C cables for the monitor, as the PI 4 does not have an HDMI to HDMI socket.
I don't understand your mention of USB-C. The sockets on a RPi4 are micro-HDMI.
by drgeoff
Sat Dec 07, 2019 10:18 am
Forum: General discussion
Topic: RPi4 do not boot from SSD after upgrade to last firmware?
Replies: 7
Views: 463

Re: RPi4 do not boot from SSD after upgrade to last firmware?

Hi, I had my RPi4 booting from SSD from almost its release. I wanted get the advantage of the last firm that lower the temperature and higher overclock. After update, I rised the overclock over 2.0ghz (my previous setup) as is written on a TH guide. After that RPi4 doesn't boot. I restored to the 2...
by drgeoff
Wed Dec 04, 2019 9:57 pm
Forum: Graphics, sound and multimedia
Topic: HDMI output to RCA/cinch input?
Replies: 5
Views: 180

Re: HDMI output to RCA/cinch input?

All Raspberry Pi computers have Composite Video out which can feed directly into a TV or monitor which has an RCA / Phono / SCART connector. It would probably be easier using that than trying to find an HDMI to composite interface. Really? Where can I find it? That sounds funny because I tried a lo...
by drgeoff
Sun Dec 01, 2019 10:41 pm
Forum: General discussion
Topic: Audio *input* to a pi 4 and Chromium? *solved*
Replies: 2
Views: 140

Re: Audio *input* to a pi 4 and Chromium?

It isn't an audio jack. It is an AV jack. Stereo audio out and composite video out. I'm very surprised that someone who has been here enough to make 180 posts didn't know that.

Your options are a USB sound card or an I2S interface.
by drgeoff
Sat Nov 30, 2019 4:53 pm
Forum: Beginners
Topic: Setting Up Raspberry Pi 4 with ethernet cable
Replies: 2
Views: 115

Re: Setting Up Raspberry Pi 4 with ethernet cable

I am new to raspberry pi. I got a raspberry pi 4B with 4GB ram recently. I want to set up the Rpi using my laptop(windows 10). I followed some of the available online vedios and materials. I used Advanced IP scanner to find the IP address of the RPi, but I am getting the name of the IP address as r...
by drgeoff
Thu Nov 28, 2019 11:16 pm
Forum: Advanced users
Topic: Does 1750Mhz need overvoltage and a fan?
Replies: 8
Views: 412

Re: Does 1750Mhz need overvoltage and a fan?

Overclocking capability varies from individual chip to individual chip. You cannot rely on someone else's overclocking experience to be the same as yours. The default settings are what all the SoCs are guaranteed to run stably at. If all the chips would work OK at higher settings, those higher setti...
by drgeoff
Thu Nov 28, 2019 11:09 pm
Forum: Troubleshooting
Topic: RaspberryPi public accessible over the network
Replies: 4
Views: 147

Re: RaspberryPi public accessible over the network

If you are testing by entering the public IP into a browser on a computer on the same LAN as the RPi server, some routers don't allow that "hairpinning". Try from another location or from a smartphone connected to the internet by your mobile carrier, not your Wi-Fi.
by drgeoff
Thu Nov 28, 2019 10:13 am
Forum: Troubleshooting
Topic: How to check if GPIO is still okay after sth. blew up?
Replies: 5
Views: 166

Re: How to check if GPIO is still okay after sth. blew up?

The black round thing contains an IC. The bare chip is mounted directly on the printed circuit board and the covered in the black stuff to protect it. The other black round things covers another IC. A crack like that invariably means it got very hot inside. Too much current. Probably faulty wiring b...
by drgeoff
Tue Nov 26, 2019 6:56 pm
Forum: General discussion
Topic: I need a little help to get going
Replies: 2
Views: 122

Re: I need a little help to get going

Put "raspberrypi blink led" into a search engine.
by drgeoff
Sun Nov 24, 2019 7:01 pm
Forum: General discussion
Topic: server vs. player vs. daemon ?
Replies: 2
Views: 106

Re: server vs. player vs. daemon ?

Am considering building a RaspberyPi-thingy to listen to my music collection which is currently on CDs, am gonna pay to have it digitized. The audio out will be via my 1980s hi-fi setup. I have searched HUNDREDS of on-line articles and for the life-of-me cannot get a good understanding of the diffe...
by drgeoff
Sun Nov 24, 2019 5:51 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 172
Views: 11825

Re: New Pi 4B v1.2?

W. H. Heydt wrote:
Sun Nov 24, 2019 4:29 pm
On the Pi4B (unlike previous B-series Pis), the LAN chip isn't involved with the Ethernet jack at all.
Let's start the pantomime season early with a loud "O yes it is!".
by drgeoff
Sat Nov 23, 2019 9:24 am
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 172
Views: 11825

Re: New Pi 4B v1.2?

The RPi god has made one of his rare appearances on the forum and revealed nothing about the existence or not in the wild of a RPI4B v1.2. So little chance of any of the RPi angels doing so. Just be patient people.
by drgeoff
Fri Nov 22, 2019 1:24 am
Forum: General discussion
Topic: Where have the PiZeros gone?
Replies: 10
Views: 797

Re: Where have the PiZeros gone?

The Pi Zero models and the 1GB Pi 4B are made by Raspberry Pi Trading, while other models are made by various manufacturers (Sony, Premier Farnell, and others I can't recall at the moment) I think that is not quite correct. My understanding of the situation is along the following lines at least in ...

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