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by drgeoff
Thu Sep 21, 2017 10:52 pm
Forum: Beginners
Topic: power adapter
Replies: 8
Views: 176

Re: power adapter

@erhanzeynel

Please do not hijack posts. Your question has nothing to do with this discussion. Start your own new topic.
by drgeoff
Thu Sep 21, 2017 9:18 pm
Forum: Off topic discussion
Topic: Turning a Science fair idea into a question.
Replies: 1
Views: 41

Re: Turning a Science fair idea into a question.

I would argue that length alone is a useless indicator. For example setting the password to 'password' is probably less secure than 'zpCj8'. A better question would be "What characteristics of a password..." But it is not immediately obvious to me how you would do meaningful experiments on this topic.
by drgeoff
Thu Sep 21, 2017 9:09 pm
Forum: Beginners
Topic: power adapter
Replies: 8
Views: 176

Re: power adapter

The micro-USB power input on all RPis has only the two power pins connected. There is no possibility of data communication with a PSU, not even the simple resistors methods as used by eg Apple and Android phones and tablets to inform them that the PSU is able to supply higher current than the typica...
by drgeoff
Thu Sep 21, 2017 8:55 pm
Forum: Troubleshooting
Topic: How to install the USB2VGAE2 (USB TO VGA External Video Adapter) ?
Replies: 12
Views: 254

Re: How to install the USB2VGAE2 (USB TO VGA External Video Adapter) ?

RedHatLinux is for x86 CPU Architecture, the Raspberry Pi is ARM CPU Architecture. Googling your device under Linux all information relevant appears to be x86 relevant...... Indeed, but if Userful have a kernel driver for the device it is highly likely it will be licensed under the GPL (since it is...
by drgeoff
Thu Sep 21, 2017 10:21 am
Forum: Troubleshooting
Topic: Connection of pi to laptop
Replies: 4
Views: 109

Re: Connection of pi to laptop

If you have a router, connect both the RPi and laptop to ethernet ports on the router. Look in the router's management panel for the IP address of the RPi.
by drgeoff
Thu Sep 21, 2017 10:12 am
Forum: Beginners
Topic: Will the USB ports specifically on this power 1 or ideally 2 Raspberry Pi 3s ?
Replies: 3
Views: 103

Re: Will the USB ports specifically on this power 1 or ideally 2 Raspberry Pi 3s ?

No. According to the specs the USB ports output 2.1A combined. 2.1A is already below what is recommended for the Pi3, with 2.1A combined you will have much less per port when both are in use. Have a careful thorough read of the 'Power' section of https://www.raspberrypi.org/help/faqs/#topPower befo...
by drgeoff
Thu Sep 21, 2017 8:54 am
Forum: Troubleshooting
Topic: Raspberri Pi 3 Mod B Wi-Fi Won't Connect
Replies: 1
Views: 51

Re: Raspberri Pi 3 Mod B Wi-Fi Won't Connect

If you truly meant WEP rather than mistakenly typing it instead of WPA, read viewtopic.php?f=91&t=193685
by drgeoff
Thu Sep 21, 2017 8:41 am
Forum: Beginners
Topic: power adapter
Replies: 8
Views: 176

Re: power adapter

Genuine question or sneaky advertisement?

There are many alternative PSUs that will safely power a RPi for a fraction of the price.
by drgeoff
Wed Sep 20, 2017 9:48 pm
Forum: Beginners
Topic: Will the USB ports specifically on this power 1 or ideally 2 Raspberry Pi 3s ?
Replies: 3
Views: 103

Re: Will the USB ports specifically on this power 1 or ideally 2 Raspberry Pi 3s ?

Very probably but don't complain to me if they don't.

Unless you really want the protected AC outlets I'd be inclined to buy something else.
by drgeoff
Tue Sep 19, 2017 6:43 pm
Forum: Beginners
Topic: Have just a rpi3b in my hand and just a laptop , no hdmi cables no ethernet cable, can i somehow set it up?
Replies: 7
Views: 215

Re: Have just a rpi3b in my hand and just a laptop , no hdmi cables no ethernet cable, can i somehow set it up?

Unless you have a way to write to micro-SD cards with the laptop, the answer is a definite 'no'.
by drgeoff
Tue Sep 19, 2017 6:22 pm
Forum: Off topic discussion
Topic: Using a second router to divide wifi traffic
Replies: 4
Views: 179

Re: Using a second router to divide wifi traffic

Do not use the routing function of the Netgear. Connect nothing to its WAN port. Connect an ethernet cable between a LAN port on one router and a LAN port on the other router. Disable the DHCP server on the Netgear. The IP address of the Netgear must not be the same as that of the other router. It c...
by drgeoff
Tue Sep 19, 2017 5:54 pm
Forum: Beginners
Topic: Raspberry PI3 B booting problem
Replies: 5
Views: 143

Re: Raspberry PI3 B booting problem

but the NOOBS package which I downloaded gives following error with Etcher when ZIP file is provided as input: "Error: Invalid archive image". The clue is in the error message. NOOBS is not an image file. Etcher is used to write zipped or unzipped image files. Try reading and following the instruct...
by drgeoff
Tue Sep 19, 2017 5:48 pm
Forum: Beginners
Topic: mic and speaker for pi
Replies: 1
Views: 48

Re: mic and speaker for pi

No RPi released to date has a USB3 port.
by drgeoff
Tue Sep 19, 2017 5:47 pm
Forum: Beginners
Topic: About Raspberry pi 3 power supply
Replies: 7
Views: 210

Re: About Raspberry pi 3 power supply

It depends on: 1. What peripherals you have. 2 amps is more than enough for a RPi2, standard keyboard and mouse. 2. Whether the label on the PSU is telling the truth. Many chargers cannot supply the stated volts and amps at the same time. Not a problem when charging most phones. tablets etc but ofte...
by drgeoff
Tue Sep 19, 2017 3:03 pm
Forum: Graphics, sound and multimedia
Topic: Sound recording on the raspberry pi Zero W
Replies: 14
Views: 375

Re: Sound recording on the raspberry pi Zero W

inimidi wrote:
Tue Sep 19, 2017 11:00 am
to capture speech.
If capturing speech, the initial statement of requiring "stereo" and "at least CD quality audio" appears to be unnecessarily demanding, not just in terms of the digitising and storage but also of the microphone and its preamp.
by drgeoff
Tue Sep 19, 2017 2:08 pm
Forum: Beginners
Topic: Pi with GSM and SDR?
Replies: 5
Views: 167

Re: Pi with GSM and SDR?

1. Restricting the range does not make it cease to be illegal.

2. There is a lot more to sending an SMS or Cell Broadcast than the RF side of things.

3. https://osmocom.org/projects/openbsc/wiki

4. This is totally out of place in the "Beginners" forum.
by drgeoff
Mon Sep 18, 2017 9:06 pm
Forum: Graphics, sound and multimedia
Topic: Sound recording on the raspberry pi Zero W
Replies: 14
Views: 375

Re: Sound recording on the raspberry pi Zero W

PiGraham wrote:
Mon Sep 18, 2017 7:31 pm
drgeoff wrote:
Mon Sep 18, 2017 6:51 pm
What exactly do you mean by "CD quality"?
Typically that means
two-channel 16-bit PCM encoding at a 44.1 kHz sampling rate per channel.

https://en.wikipedia.org/wiki/Compact_disc
Yes I know that, but is that what the OP really needs or only thinks he needs?
by drgeoff
Mon Sep 18, 2017 6:51 pm
Forum: Graphics, sound and multimedia
Topic: Sound recording on the raspberry pi Zero W
Replies: 14
Views: 375

Re: Sound recording on the raspberry pi Zero W

What exactly do you mean by "CD quality"?

Why exactly do you require audio recording and Wi-Fi together?
by drgeoff
Sun Sep 17, 2017 11:07 pm
Forum: Beginners
Topic: Can RAS PI3 handle?
Replies: 4
Views: 150

Re: Can RAS PI3 handle?

Where is the database stored? RPis are not immune from causing corruption to their file systems if power is interrupted before a software shutdown has completed.
by drgeoff
Sun Sep 17, 2017 10:11 pm
Forum: Networking and servers
Topic: Web server NGINX outside connection impossible
Replies: 2
Views: 108

Re: Web server NGINX outside connection impossible

It isn't the answer to your question but putting your RPi in the router's DMZ is not the wisest of actions from a security viewpoint.

You should instead use port forwarding on the router.
by drgeoff
Sun Sep 17, 2017 10:03 pm
Forum: Media centres
Topic: Samsung Universal Remote CEC with RPi3 OSMC
Replies: 4
Views: 390

Re: Samsung Universal Remote CEC with RPi3 OSMC

It seems you do not have a complete understanding of my post above and the difference between CEC and Samsung Universal Remote.
by drgeoff
Sun Sep 17, 2017 9:53 pm
Forum: Beginners
Topic: Not sure what i need? How to wire?
Replies: 3
Views: 77

Re: Not sure what i need? How to wire?

Before you connect a 5 volt relay board to any RPi you need to understand the ramifications of RPi GPIOs using 3.3 volt logic levels and not being 5 volt tolerant.
by drgeoff
Sun Sep 17, 2017 5:32 pm
Forum: Beginners
Topic: can't make USB-RJ45 adapter to work
Replies: 10
Views: 200

Re: can't make USB-RJ45 adapter to work

It does not matter what RPi you have. They all have the same drivers.
by drgeoff
Sun Sep 17, 2017 4:46 pm
Forum: Graphics, sound and multimedia
Topic: smarthome with hifi-system
Replies: 1
Views: 92

Re: smarthome with hifi-system

First posts are moderated by a human so can take some time to appear.

Have you done any research for your project?

RPis have no analogue inputs. If you want to input analogue audio you need an external audio ADC. For example a USB sound card.
by drgeoff
Sun Sep 17, 2017 4:35 pm
Forum: Troubleshooting
Topic: Composite video issues
Replies: 1
Views: 43

Re: Composite video issues

What was the info that got you to this blurry monochrome picture?

What is the display device? Is it PAL or NTSC?

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