Go to advanced search

by rpdom
Sun Dec 09, 2018 6:16 pm
Forum: Troubleshooting
Topic: Broken Pi? (SMD part came off)
Replies: 5
Views: 123

Re: Broken Pi? (SMD part came off)

Yes, you can boot up the Pi without issues, just, as you have guessed, the WiFi won't work (or will have a very short range).
See this thread for details of what the part is and does: viewtopic.php?t=200759
by rpdom
Sat Dec 08, 2018 8:58 pm
Forum: Troubleshooting
Topic: Momentarily 3.3V pin shorted to ground, Pi 3B+ won't boot up
Replies: 11
Views: 258

Re: Momentarily 3.3V pin shorted to ground, Pi 3B+ won't boot up

The "it should not" part is an opinion. The opinion depends on one's interpretation of "overcurrent protection" in the sentence "Fault protection features include input undervoltage lockout, overcurrent protection, and thermal protection" in the data sheet https://www.exar.com/ds/mxl7704.pdf. Readi...
by rpdom
Sat Dec 08, 2018 5:13 pm
Forum: Troubleshooting
Topic: Momentarily 3.3V pin shorted to ground, Pi 3B+ won't boot up
Replies: 11
Views: 258

Re: Momentarily 3.3V pin shorted to ground, Pi 3B+ won't boot up

The "it should not" part is an opinion. There are no warnings that shorting the 3.3V rail to ground will kill the regulator, but it is certainly not something that you should do. Shorting the 5V to 3.3V or any GPIO (equally easy) on other Pi models will fry the SoC. I don't see anyone stating that i...
by rpdom
Sat Dec 08, 2018 2:07 pm
Forum: Off topic discussion
Topic: Lithography, PiServer, overclocking
Replies: 5
Views: 156

Re: Lithography, PiServer, overclocking

ProDigit wrote:
Sat Dec 08, 2018 10:31 am
Lithography:
Since phones are aiming towards 7nm lithography, when can we see a new die shrink for the Raspberry Pi CPU?
The current Broadcom is like what, 28nm?
The current Broadcom SoC is 40nm. The next Pi will probably use 28nm. Going smaller than that will make the price too high.
by rpdom
Sat Dec 08, 2018 11:19 am
Forum: Networking and servers
Topic: mount a cifs share using fstab
Replies: 17
Views: 254

Re: mount a cifs share using fstab

Ok, I can see some potential issues there. All right. I am trying this using cron. I start this python script: #!/usr/bin/python3 My crontab entry is @reboot sudo python /home/pi/Desktop/python/startup.py Your code is set to use python3, but in the crontab you have just python, which I believe still...
by rpdom
Fri Dec 07, 2018 6:40 pm
Forum: HATs and other add-ons
Topic: PoE Port Expansion
Replies: 7
Views: 137

Re: PoE Port Expansion

I don't think I understand you. The PoE HAT powers the Pi over the Ethernet cable from a PoE capable network Switch, or a non-PoE Switch used in conjunction with a PoE injector. If the IP phones require PoE themselves, they would also get that from the PoE capable Switch - nothing to do with the Pi....
by rpdom
Fri Dec 07, 2018 10:06 am
Forum: Troubleshooting
Topic: MariaDB install does not ask for root password
Replies: 2
Views: 47

Re: MariaDB install does not ask for root password

sudo mysql -u root
will get you logged in as the root user. No password required, but it only works locally from the root user.

After that you can set up permissions for other users as required.
by rpdom
Fri Dec 07, 2018 8:34 am
Forum: General discussion
Topic: Complements to RPiT
Replies: 21
Views: 551

Re: Complements to RPiT

i do remember a RPi blog post about the better power management IC that they brought out with the 3B+, I had forgotten about that until you brought it up. I thought they had done something inside the SoC too. Increased the thickness of the paths to the CPU cores. Not sure. Not sure either, other th...
by rpdom
Fri Dec 07, 2018 3:27 am
Forum: Graphics, sound and multimedia
Topic: OSC-controlled OMXplayer to composite output
Replies: 2
Views: 64

Re: OSC-controlled OMXplayer to composite output

Generally, unless forced in /boot/config.txt, the Pi will use HDMI if an HDMI display is detected at boot time, otherwise it will default to composite output. It can't do both at the same time.
by rpdom
Thu Dec 06, 2018 7:02 am
Forum: Other projects
Topic: Getting the pi to pretend it is a keyboard
Replies: 4
Views: 118

Re: Getting the pi to pretend it is a keyboard

First thoughts are: Pi Zero range can present as USB devices in gadget mode. There are drivers for HID devices like keyboards. It shouldn't be too hard to make a Zero look like a USB keyboard abd send the right button presses. Pi Zero does not support the official Pi touch screen display. It may be ...
by rpdom
Wed Dec 05, 2018 7:40 pm
Forum: General discussion
Topic: About Raspberry Pi power and Powered USB hub device
Replies: 27
Views: 521

Re: About Raspberry Pi power and Powered USB hub device

drgeoff wrote:
Wed Dec 05, 2018 7:23 pm
Hands up all those who don't have a 12 volt solar system.
I'd like to, but you just can't get the sun you know.

Maybe a rain powered system?
by rpdom
Wed Dec 05, 2018 7:12 pm
Forum: General discussion
Topic: Mother-Daughter Pi's?
Replies: 9
Views: 292

Re: Mother-Daughter Pi's?

Depending on the model of Pi, wired or wireless network. That can work even if they are a stand-alone network with no connection to the internet. That is one of the few cases you might want to set up real static IP addresses, unless you have one of the Pi working as a DHCP server. Use something like...
by rpdom
Tue Dec 04, 2018 7:52 pm
Forum: Beginners
Topic: Sanity Check - Multiple ds18b20 Sensors
Replies: 5
Views: 104

Re: Sanity Check - Multiple ds18b20 Sensors

DirkS wrote:
Tue Dec 04, 2018 7:43 pm
And because of the horizontal division in the middle, the top 2 sensors are actually completely isolated
Nope, the three sensors are all in the top part of the board with link wires from the bottom half.
by rpdom
Mon Dec 03, 2018 7:43 pm
Forum: Off topic discussion
Topic: Raspberry pi 4 - x64 Processor ?
Replies: 83
Views: 1832

Re: Raspberry pi 4 - x64 Processor ?

DavidS wrote:
Mon Dec 03, 2018 3:12 pm
Nope:
x64 is an alias for AMD64/IA64.
Nope.
x86_64 is for AMD and Intel 64 bit x86 based processors, also known as AMD64 (because AMD released them before Intel did).
IA64 is for Intel Itanium 64 bit processors which are a completely different architecture.
by rpdom
Mon Dec 03, 2018 2:48 pm
Forum: Troubleshooting
Topic: Trying to use DELL 1320C networked printer with Pi.
Replies: 7
Views: 134

Re: Trying to use DELL 1320C networked printer with Pi.

mw0sec wrote:
Mon Dec 03, 2018 12:56 pm
Forgive my ignorance, but what is that HPPCL stuff? Incidentaly, the 1320 is not a postscript printer.
From what I can see it has very limited language support. I think I'll stick with my one which supports Postscript, HP/PCL, PDF and others. Sorry I can't help you.
by rpdom
Mon Dec 03, 2018 6:41 am
Forum: General discussion
Topic: Setting Clocking on 3B+?
Replies: 24
Views: 564

Re: Setting Clocking on 3B+?

Or the old 3.5" floppy drive and cassettes in storage boxes in the shed. They still work, but have been surpassed by USB flash drives, rendering them obsolete by an order of magnitude, not to mention that a modern PC lacks the support and connection for a floppy drive anyway. Not that I've needed t...
by rpdom
Sun Dec 02, 2018 9:32 pm
Forum: Troubleshooting
Topic: Trying to use DELL 1320C networked printer with Pi.
Replies: 7
Views: 134

Re: Trying to use DELL 1320C networked printer with Pi.

FWIW - I have managed to get my Dell 2330dn network-attached Laser Printer working OK from a Pi+Raspbian+CUPS. Yes. Network attached printers are a little easier to configure than directly attached ones and as a last resort can usually be treated as a default postscript or HPPCL printer. My DEll C2...
by rpdom
Sun Dec 02, 2018 8:25 pm
Forum: General discussion
Topic: how to Buzzer connection with GPIO pin in Raspberry pi3
Replies: 12
Views: 1038

Re: how to Buzzer connection with GPIO pin in Raspberry pi3

That picture shows what appears to be a PC type speaker. The PC generates the tone signals and sends them to the speaker.

You could use the PWM output of the Pi to generate tones with it.
by rpdom
Sun Dec 02, 2018 8:19 pm
Forum: Troubleshooting
Topic: Raspberry Pi Model 3 A+ will not boot
Replies: 15
Views: 342

Re: Raspberry Pi Model 3 A+ will not boot

I disagree. I think neither a power problem nor a bad RPi. It's a fact that some USB hubs just don't work properly when directly connected to the USB port of a Broadcom 2835/6/7. Could be. I have a Zero that runs fine with wired keyboard and mouse on one USB hub, but not with another. It isn't a po...
by rpdom
Sun Dec 02, 2018 12:16 pm
Forum: General discussion
Topic: how to Buzzer connection with GPIO pin in Raspberry pi3
Replies: 12
Views: 1038

Re: how to Buzzer connection with GPIO pin in Raspberry pi3

rpiuser2016 wrote:
Sun Dec 02, 2018 11:38 am
I have a problem with a buzzer.
What sort of buzzer? Can you provide a link?

Some just need to be switched on or off, others may need to be fed a signal at the right frequency to make a sound.
by rpdom
Sat Dec 01, 2018 6:34 pm
Forum: Beginners
Topic: Raspberry Pi 3 B+ Power Supply
Replies: 10
Views: 320

Re: Raspberry Pi 3 B+ Power Supply

So now, the UK is 240V (+10V, -20V) Yep, currently (or should that be "voltagely"? :lol:) 245V here. I haven't been to the Netherlands (yet! I have lots of friends there, so will have to visit them rather than them coming here again), but I'm sure it varies a bit. Anyway we seem to have drifted off...
by rpdom
Sat Dec 01, 2018 12:43 pm
Forum: Troubleshooting
Topic: .config FIle is reseted by reboot
Replies: 3
Views: 90

Re: .config FIle is reseted by reboot

It is a standard failure mode for SD cards that have detected that they have reached end-of-life.
by rpdom
Sat Dec 01, 2018 12:39 pm
Forum: Beginners
Topic: Raspberry Pi 3 B+ Power Supply
Replies: 10
Views: 320

Re: Raspberry Pi 3 B+ Power Supply

As a example your house wiring. That is "always a steady" 230vac* and is capable of delivering a certain power. *in my country That would be unusual. Here in the GB the voltage can vary between about 220V and 250V. It depends on time of day, load on the system and distance from the premises to the ...
by rpdom
Sat Dec 01, 2018 6:08 am
Forum: Beginners
Topic: Retropie - is everything stored on the SD?
Replies: 1
Views: 98

Re: Retropie - is everything stored on the SD?

Yes, to both your questions.

Go to advanced search