Go to advanced search

by wh7qq
Thu Aug 11, 2016 1:19 am
Forum: Troubleshooting
Topic: USB auto mount - again.
Replies: 1
Views: 359

Re: USB auto mount - again.

Wasn't aware there was a model 5 RPi. Personally, I really hate PCMANFM and much prefer Thunar. That said, you should see a window asking if you want to "Open in File Manager" when you insert a USB memory. If you don't, not sure what is going on...you might try a fresh install on a different 8G or l...
by wh7qq
Thu Aug 11, 2016 12:51 am
Forum: Troubleshooting
Topic: Pi Not Accepting 5V
Replies: 19
Views: 2482

Re: Pi Not Accepting 5V

Resistance is indeed futile...more than a tiny amount can cause big voltage drops and serious futilitly :D and the 3 shows that rainbow box at the drop of a hat. V=IR so even 0.1 ohm at 1 amp will drop 0.1v. If you put an inline switch in series, the switch contacts add resistance...small cable is a...
by wh7qq
Thu Aug 11, 2016 12:21 am
Forum: Troubleshooting
Topic: Network dont start
Replies: 10
Views: 1205

Re: Network dont start

Not sure why you have commented out all those lines at the bottom but try replacing your /etc/network/interfaces file with # interfaces(5) file used by ifup(8) and ifdown(8) # Please note that this file is written to be used with dhcpcd # For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'...
by wh7qq
Mon Aug 08, 2016 10:35 pm
Forum: Troubleshooting
Topic: Pi3 wifi connected. No internet access.
Replies: 4
Views: 871

Re: Pi3 wifi connected. No internet access.

The inet address for wlan0 looks suspicious to me...shouldn't it be in the same domain as your router (something like 192.168.x.x)? Are you doing anything special with it?

Have you moved the RPi away from your router since downloading the OS? The on-board wifi antenna is very small on the 3.
by wh7qq
Mon Aug 08, 2016 8:25 pm
Forum: Troubleshooting
Topic: Wireless connection between pi and computer using Java
Replies: 6
Views: 1512

Re: Wireless connection between pi and computer using Java

The RPi3 has an on-board wifi capability, limited by the minute chip antenna on the board but is useable fairly close to the router/access point. The larger USB wifi dongles with full size antennas may give you better range. Text or other files can be transferred from a console with "scp". The files...
by wh7qq
Mon Aug 08, 2016 8:11 pm
Forum: Troubleshooting
Topic: USB Not working (over-current change)
Replies: 3
Views: 863

Re: USB Not working (over-current change)

You said "EDIT: I've just tried testing PP27 which i've read is "VBUS (USB 5V power)". I did this by putting the red multimeter probe on PP27 and black on GND and the voltage reads 0.7mV, is this correct?" I did not see this when I posted earlier so maybe your edit was later but 0.7 mv is not enough...
by wh7qq
Mon Aug 08, 2016 7:50 pm
Forum: Troubleshooting
Topic: Problems with Raspbian Jessie Install (Version: May 2016)
Replies: 5
Views: 1180

Re: Problems with Raspbian Jessie Install (Version: May 2016

How far are you from the access point/router? The built-in wifi on the RPi3 seems to vary quite a bit, example to example but the on-board antenna is a tiny chip and despite any protestations to the contrary, size really does matter, at least when it comes to uwave antennae. Get close to the source ...
by wh7qq
Mon Aug 08, 2016 5:15 am
Forum: Troubleshooting
Topic: USB serial port flaky when streaming UVC video other port
Replies: 2
Views: 483

Re: USB serial port flaky when streaming UVC video other por

I can recall problems using serial devices with linux from years past...seems like (just my stupid guess) that serial communications use some interrupts that screw up other activities. No idea if that is still true but I do recall having some serial phone modems really screw up the works when they w...
by wh7qq
Sun Aug 07, 2016 7:32 pm
Forum: Troubleshooting
Topic: Diakonos on Raspberry Pi 2
Replies: 1
Views: 426

Re: Diakonos on Raspberry Pi 2

Sounds like diakonos is not in the Raspbian repositories and you will have to download it (from Git?) and compile it yourself. If you are looking for a good console text editor, nano is simple and already present on Raspbian. If you are looking for something fancier, the midnight commander text edit...
by wh7qq
Sun Aug 07, 2016 6:44 pm
Forum: Troubleshooting
Topic: RPI3 WiFi very slow
Replies: 4
Views: 1949

Re: RPI3 WiFi very slow

The wifi on the RPi3 is pretty weak and only works for me in close proximity to the router. It is nearly useless at longer range. You may have better results using a separate USB wifi dongle such as the Panda PAUO6 with a larger antenna. Wifi is always second choice to ethernet for speed, security a...
by wh7qq
Wed Aug 03, 2016 1:04 am
Forum: Troubleshooting
Topic: USB Not working (over-current change)
Replies: 3
Views: 863

Re: USB Not working (over-current change)

You didn't mention anything about booting problems so that probably works ok. It is still possible that a config file has been corrupted on your SD card so you might want to power off the Pi and pull the SD card, reformat it and reload the latest Raspbian image. If your USB ports still don't work, i...
by wh7qq
Sun Jul 31, 2016 9:02 pm
Forum: Graphics, sound and multimedia
Topic: Before I buy one - is this possible to do?
Replies: 5
Views: 1413

Re: Before I buy one - is this possible to do?

The Rpi ethernet port is rated at 100 Mb/sec and probably rarely attains that speed, if ever. I doubt that many of your torrents attain that level either so it probably doesn't matter if it is a bit slow. There are good procedures on line for setting up an external root directory on the Rpi...see th...
by wh7qq
Sun Jul 31, 2016 8:41 pm
Forum: Troubleshooting
Topic: Boot problem after software install
Replies: 5
Views: 1266

Re: Boot problem after software install

It certainly sounds as though your sd card is corrupted. If you have another sd card of that capacity or greater, I suggest you reformat it as FAT32 and either load noobs or the current raspbian on it and start over. Be sure to allow sufficient time for the RPi to shutdown (the green LED will blink ...
by wh7qq
Sat Jul 23, 2016 10:15 pm
Forum: Troubleshooting
Topic: Pi Zero USB Hub problem
Replies: 1
Views: 1830

Re: Pi Zero USB Hub problem

The included drivers in Raspbian should do the trick for your hardware. The first thing to suspect is power. Check the power on GPIO pin 1 and 2 or 3 with a DVM but use extreme care with the probe tips so you don't short the pins on the Pi. You should see >4.8vdc there. The zero will malfunction or ...
by wh7qq
Fri Jul 22, 2016 7:49 pm
Forum: Beginners
Topic: How Connect A Pi To A PC And Relay A Heartbeat Connection
Replies: 7
Views: 1176

Re: How Connect A Pi To A PC And Relay A Heartbeat Connectio

The easy approach is to use a LAN connection or direct Pi to PC ethernet connection and just ping the client from the host to verify the connection. A simple python script is on the web (google is your friend) to do this and it can be called with a CRON job.
by wh7qq
Fri Jul 22, 2016 7:11 pm
Forum: Troubleshooting
Topic: Shutdown and SD card corruption
Replies: 3
Views: 1099

Re: Shutdown and SD card corruption

After corrupting several uSD cards, I now make a point to go through the full shutdown procedure before pulling the plug. That means waiting through the 10 green flashes to a solid red before turning off the 5v. My B+ is headless so I do a "poweroff" on that via SSH and by the time I get to it, it h...
by wh7qq
Fri Jul 22, 2016 2:20 am
Forum: Troubleshooting
Topic: Raspbian jessie upgrade - cannot login anymore
Replies: 3
Views: 730

Re: Raspbian jessie upgrade - cannot login anymore

A fugly but simple approach to the problem is to load a fresh copy of Raspbian or Noobs. The "dist-upgrade" choice of upgrading the distribution is chancy and the better bet is to back up your essentials and do a fresh install. In between times, the simple "upgrade" is a safer choice. Hopefully, the...
by wh7qq
Thu Jul 21, 2016 5:16 am
Forum: Troubleshooting
Topic: Hdmi to vga
Replies: 2
Views: 382

Re: Hdmi to vga

Depends on the vga adapter, but your hdmi output on the Pi may not have enough power, as mentioned in the first reply. Another approach to try before buying a powered adapter is here: https://www.raspberrypi.org/forums/viewtopic.php?t=8423&p=106594. I got my Cablematters adapter working with these c...
by wh7qq
Sun Jul 17, 2016 1:12 am
Forum: Troubleshooting
Topic: Raspberry Pi Zero Overheating + HDMI artifacting & blankout
Replies: 6
Views: 2809

Re: Raspberry Pi Zero Overheating + HDMI artifacting & blank

Touch is not a reliable indicator of operating temp. In a console window run the following: /opt/vc/bin/vcgencmd measure_temp This will give you the temp of the cpu. If it is over 85 C +/- a few degrees, , the Pi should shut down on its own. Just being unpleasant to touch is not a good indicator of ...
by wh7qq
Sun Jul 17, 2016 12:43 am
Forum: Troubleshooting
Topic: Red LED Goes Out After 25 Seconds
Replies: 5
Views: 716

Re: Red LED Goes Out After 25 Seconds

The behavior is appropriate for a Pi w/o sd card. The Pi cannot boot without a proper boot sd card in place. I have seen the red led going out when the power supply voltage was too low. What kind of supply are you using. Cell phone supplies typically don't supply enough power at the Pi current level...
by wh7qq
Fri Jul 15, 2016 6:55 pm
Forum: Troubleshooting
Topic: Raspberry Pi Zero Overheating + HDMI artifacting & blankout
Replies: 6
Views: 2809

Re: Raspberry Pi Zero Overheating + HDMI artifacting & blank

There is a Standard to the Mini converter on there.
???? What does this mean?

By the way, how do you know the RPi is overheating? The cpu tends to run pretty warm to the touch but isn't really overheating until 85 C where it bogs down.
by wh7qq
Fri Jul 15, 2016 4:45 pm
Forum: Troubleshooting
Topic: Raspberry Pi Zero Overheating + HDMI artifacting & blankout
Replies: 6
Views: 2809

Re: Raspberry Pi Zero Overheating + HDMI artifacting & blank

Disconnect all USB attachments and reboot. Add USB devices one by one until the problem shows up. Check the power supply to the USB hub and/or try a different powered hub. Try a different HDMI cable...that one sounds flakey, or you could have damaged the HDMI connector on the Pi board. The connector...
by wh7qq
Fri Jul 15, 2016 4:32 pm
Forum: Troubleshooting
Topic: Login issues connecting to raspberry pi files
Replies: 1
Views: 336

Re: Login issues connecting to raspberry pi files

I'm unsure what you are trying to accomplish here but I have routinely been accessing an RPi on my home LAN from several different computers on the LAN, ethernet and wifi, using ssh. Ssh must be enabled in the configuration but then it is simple to connect with ssh pi@[your Pi's IP or hostname here]...
by wh7qq
Thu Jul 14, 2016 4:44 am
Forum: Troubleshooting
Topic: booting up trouble
Replies: 4
Views: 638

Re: booting up trouble

Unlikely that the the sd cards are at fault, as all have been shown to work on another system. That a second Pi would have the same problem is unlikely. Still, not all Pi's draw the same power. My money is on the power cord. Even with a properly rated supply, the voltage drop over a thin cable can b...
by wh7qq
Sun Jul 10, 2016 3:59 pm
Forum: Troubleshooting
Topic: RPi2 SD card holder does not hold
Replies: 3
Views: 511

Re: RPi2 SD card holder does not hold

When I first got my Pi3, I thought the non-locking slot was a "cost reduction". If you change cards a lot as I tend to, it may be a blessing in disguise. I mostly leave my B+ alone in its IoT application so I haven't seen any problem with it yet.

Go to advanced search