Go to advanced search

by wh7qq
Thu Feb 15, 2018 3:28 am
Forum: Troubleshooting
Topic: Edimax WiFi dongle turns off when router drops wifi connection?
Replies: 2
Views: 75

Re: Edimax WiFi dongle turns off when router drops wifi connection?

Most of us here are focused on Raspbian issues so you really should ask this on the Mate forum. On the RPi/Raspbian, that seems to be the case. I do not know how to prevent it, or even why prevent it...why should the Edimax suck current when the router is not on-line?
by wh7qq
Thu Feb 15, 2018 3:23 am
Forum: Troubleshooting
Topic: strange HDMI issue
Replies: 3
Views: 101

Re: strange HDMI issue

Just an idea...barely. I vaguely recall seeing something about back-powering the Rpi via the HDMI port or I may have had such an experience myself...but my memory is doing a fast fade. On the 2, doesn't that bypass all the protection circuits?
by wh7qq
Wed Feb 14, 2018 10:18 pm
Forum: Troubleshooting
Topic: My rasp 3 is hanging
Replies: 1
Views: 38

Re: My rasp 3 is hanging

You don't say what program(s) you have running when it hangs or what you have connected to the USB ports. The 3B will hang for lack of free memory if too many tabs are opened on Chromium or Firefox (or nearly any other browser). You also did not mention if you waited for it to recover and how long. ...
by wh7qq
Wed Feb 14, 2018 1:50 am
Forum: Beginners
Topic: High V\I Power Bank
Replies: 3
Views: 116

Re: High V\I Power Bank

On the other hand, there are some nice commercial units for the RPi that would not lead you far astray. Search on google or duck duck for Raspberry Pi UPS. One I have reviewed had a 3800 mah LiPo included and was designed for the form factor of the RPi 3B.
by wh7qq
Wed Feb 14, 2018 12:27 am
Forum: General discussion
Topic: Audio on RPi3
Replies: 1
Views: 116

Re: Audio on RPi3

While the RPi can output audio via the earphone jack or the HDMI port, you are probably going to want to use some kind of USB audio dongle to output it. If you also want input capability, you will need something like the AudioInjector card for high quality input and output of audio. They are amazing...
by wh7qq
Tue Feb 13, 2018 10:38 pm
Forum: Beginners
Topic: Controlling a Inkjet Printer realtime with the Pi?
Replies: 1
Views: 61

Re: Controlling a Inkjet Printer realtime with the Pi?

Best to compose your drawing in the computer/on-the-screen using one of many drawing packages...Gimp or LibreOffice Draw or someting of the sort and then send it to a printer when you are happy with it. Trying to draw directly with the printer will be wasteful of paper and ink and programming it wou...
by wh7qq
Tue Feb 13, 2018 10:23 pm
Forum: Beginners
Topic: High V\I Power Bank
Replies: 3
Views: 116

Re: High V\I Power Bank

You have to determine the current requirements of your attached equipment and the model RPi you are using. I don't know if there is any thing such as an "average" USB dongle...depends entirely on what they are doing. For example, my Logitech wireless mouse dongle and a wired Logitech ultraX keyboard...
by wh7qq
Tue Feb 13, 2018 8:31 pm
Forum: Troubleshooting
Topic: Analog Reads from SCT-013 current sensor using MCP3008
Replies: 4
Views: 253

Re: Analog Reads from SCT-013 current sensor using MCP3008

If as you say so that i used SCT-013 100AMP. the same circuit used with Arduino and it works fine , MCP3008 wiring is correct . i'm using the following code to test the output but i got 0 all I can suggest is to go back to basics and check to be sure the SCT-013 is actually putting out a voltage wit...
by wh7qq
Fri Feb 09, 2018 7:56 pm
Forum: Automation, sensing and robotics
Topic: Stoping process in flask without (cnt + C)
Replies: 2
Views: 123

Re: Stoping process in flask without (cnt + C)

If you know the process number of the process, you can use the linux kill or killall commands.
by wh7qq
Fri Feb 09, 2018 7:49 pm
Forum: Beginners
Topic: RPi Power supply (battery) with protection circuit
Replies: 5
Views: 231

Re: RPi Power supply (battery) with protection circuit

And don't dismiss the wireless keyboard and mouse in your calculations. My logitech wireless mouse and wired keyboard draw 0.12 A so not to be ignored even though they "shouldn't be a problem". As far as the link you posted, that is a lot of different batteries with different shapes, sizes and elect...
by wh7qq
Wed Feb 07, 2018 9:28 pm
Forum: Beginners
Topic: RPi Power supply (battery) with protection circuit
Replies: 5
Views: 231

Re: RPi Power supply (battery) with protection circuit

You need to specifiy physical size and form factor and which RPi you are using with what accessories (total current requirement) as well as how long you expect it to run. Nobody can answer your question as written.
by wh7qq
Wed Feb 07, 2018 9:21 pm
Forum: Bare metal
Topic: FIXED: GPIO 22 and 26 parallel behaviour
Replies: 4
Views: 270

Re: GPIO 22 and 26 parallel behaviour

There are at least 3 known numbering schemes in use for the RPi...physical (connector based), Broadcom and GPIO/wiring Pi. Further, there is no clear marking on the board or silk screen to indicate the physical pin 1 other than a very insignificant square land on the board itself which oftentimes ca...
by wh7qq
Wed Feb 07, 2018 3:11 am
Forum: Automation, sensing and robotics
Topic: GPIO on Pi Zero versus Pi 3
Replies: 4
Views: 354

Re: GPIO on Pi Zero versus Pi 3

This may (or may not) be of some help/interest to you. http://www.mosaic-industries.com/embedd ... ifications. Looks like the GPIO pins can be manipulated many ways to different modes and states.
by wh7qq
Mon Feb 05, 2018 9:54 pm
Forum: Beginners
Topic: OS on a Pi Zero W
Replies: 7
Views: 35244

Re: OS on a Pi Zero W

IMHO, the Zero (I have 3 of them) is best suited for headless control tasks. Raspbian is convenient but all the educational and kiddie stuff makes for an overfed distro so stripping out of unneeded stuff or using the stripped down Raspbian-lite is a good move, or better yet, an even more minimalized...
by wh7qq
Sun Feb 04, 2018 10:56 pm
Forum: General discussion
Topic: sudo apt-get update not responding
Replies: 3
Views: 224

Re: sudo apt-get update not responding

Thanks Dougie...lucky I just happened to see your post but it has saved me much frustration.
by wh7qq
Sat Feb 03, 2018 4:13 am
Forum: Automation, sensing and robotics
Topic: GPIO on Pi Zero versus Pi 3
Replies: 4
Views: 354

Re: GPIO on Pi Zero versus Pi 3

AFAIK, there is no difference in the functions or numbering of the GPIO pins between the 3B and the zero. In most cases, the pins default state is Mode "In" and Value "zero". If you start with a freshly burned uSD with nothing changed from the default, you will probably find this to be true. Carry-o...
by wh7qq
Sat Feb 03, 2018 3:46 am
Forum: Troubleshooting
Topic: Headless WiFi connected RasPi looses connection.
Replies: 2
Views: 113

Re: Headless WiFi connected RasPi looses connection.

See http://weworkweplay.com/play/rebooting- ... tion-wifi/. There is a further elaboration which restarts the wlan0 if no wifi but I have not found it to be as dependable.
by wh7qq
Fri Feb 02, 2018 7:44 pm
Forum: Troubleshooting
Topic: Raspberry Pi Zero W doesn't boot up (or doesn't show any sign) when flashed micro SD card using rpiboot.
Replies: 5
Views: 200

Re: Raspberry Pi Zero W doesn't boot up (or doesn't show any sign) when flashed micro SD card using rpiboot.

It is extremely doubtful that your RPi is broken and much more likely that your "successful" flash of Jessie Lite was not. uSD readers are really cheap and you will need one if you plan to do much of anything with the RPi...order one right away. The tiny SanDisk uSD card reader is great and very che...
by wh7qq
Fri Feb 02, 2018 1:29 am
Forum: Advanced users
Topic: AudioInjector hat Review
Replies: 2
Views: 395

Re: AudioInjector hat Review

It's been 6 months or so since I posted that and I don't recall all the details but I did follow flatmax's instructions for setup. I also know nothing of the "Broadcom tree" you speak of. If you search on my posts (wh7qq) on the AI forum you should see everything I needed from flatmax and his respon...
by wh7qq
Thu Feb 01, 2018 7:50 pm
Forum: Troubleshooting
Topic: SSH connection loss
Replies: 2
Views: 168

Re: SSH connection loss

Is this an ethernet or wifi connection? RPi is notorious for dropping unused wifi connections in a short time. No such problem on ethernet that I know of.
by wh7qq
Thu Feb 01, 2018 7:39 pm
Forum: Troubleshooting
Topic: Black screen after reboot
Replies: 4
Views: 166

Re: Black screen after reboot

The combination of lightning bolt and messed up HDMI are pretty conclusive evidence. Your power supply or the connecting cable are not supplying sufficient voltage. HDMI runs off the 5V supply. Good 5V 2.5 amp supplies aren't that expensive and generally have pretty good cables as well as slightly o...
by wh7qq
Mon Jan 29, 2018 9:02 pm
Forum: Troubleshooting
Topic: Black screen after reboot
Replies: 4
Views: 166

Re: Black screen after reboot

Have you tried to boot with HDMI connected to start? The lightning bolt suggests your power supply or cable are not up to the task...what are you using? What model RPi? Do you have a steady red LED? What OS are you trying to use? Version?
by wh7qq
Sun Jan 28, 2018 1:51 am
Forum: General discussion
Topic: Pi Zero WH (in Canada)
Replies: 1
Views: 158

Re: Pi Zero WH (in Canada)

I just finished soldering a header on my Zero 1.3...a PITA to be sure. Nice the RPF decided to pre-assemble.
by wh7qq
Sun Jan 28, 2018 1:38 am
Forum: Troubleshooting
Topic: Raspbian Stretch-Camera Module not working with HomeGenie application. Was working in Wheezy.
Replies: 2
Views: 120

Re: Raspbian Stretch-Camera Module not working with HomeGenie application. Was working in Wheezy.

As you probably know, Wheezy is two generations of Debian back so the Mono version that worked on Wheezy may not be appropriate for Stretch. Be sure you are using the latest version of Mono and HomeGenie. Mono can be a bugger as the Debian repos generally do not support the latest versions and it ha...
by wh7qq
Sun Jan 28, 2018 1:29 am
Forum: General discussion
Topic: Pie Zero Black screen on my Sony Brava Tv
Replies: 1
Views: 109

Re: Pie Zero Black screen on my Sony Brava Tv

How are you connecting to the Bravia? I have an older Bravia lcd and the HDMI connection worked on the first try. My Bravia can select a number of different types of input...do you have the right one selected? Is it a fresh uSD or have you previously used it on other displays? This is an old thread ...

Go to advanced search