Search found 102 matches
- Tue Aug 04, 2015 11:52 pm
- Forum: Troubleshooting
- Topic: STICKY: WiFi Dongle Issues ? Start here !
- Replies: 581
- Views: 772788
Re: WiFi Issues ? Start here !
Are you there Mr. E? Just wondering if you could help me locate Model B+ drivers for; 148f:5370 Ralink Technology, Corp. RT5370 Wireless adapter. It shows rt2800 drivers with lsmod but won't work. 148f:7601 Ralink technology, Corp. It shows It also shows rt2800 drivers with lsmod but likewise won't ...
- Mon Aug 03, 2015 8:59 am
- Forum: Python
- Topic: tty/shell/session
- Replies: 11
- Views: 2012
Re: tty/shell/session
If you only want to write to tty1, use write, not wall. Since you are assuming the same user will be logged in anyway, you can actually just open /dev/tty1 as a file and write to it. You could also take ownership ("sudo chown") of an empty console such as /dev/tty9, and then write directl...
- Mon Aug 03, 2015 3:20 am
- Forum: Python
- Topic: tty/shell/session
- Replies: 11
- Views: 2012
Re: tty/shell/session
The python programs are for monitoring a piece of remote equipment Joe & sending it's vitals to a website. When it's all working properly this would would be the only output. In the early development it was easy enough to run individual python programs from a tty with the print going to just tha...
- Mon Aug 03, 2015 1:14 am
- Forum: Python
- Topic: tty/shell/session
- Replies: 11
- Views: 2012
Re: tty/shell/session
So for python that is booted automatically on power up; - prints appear in an SSH session & the local HDMI tty1 - walls appear in everything regardless of mesg n Is there a cmd I can use to selectively pipe output to where I want. It would be great to direct python output diagnostics to tty1 onl...
- Sat Aug 01, 2015 11:04 am
- Forum: Python
- Topic: tty/shell/session
- Replies: 11
- Views: 2012
Re: tty/shell/session
Sorry I didn't explain very well. The python is run automatically by the system at boot up via a hook file. Any prints in the python code go to the user who initiated it, ie the system, & therefore don't appear in tty1. So we put diagnostics in a log_output file instead then dump it with a wall ...
- Fri Jul 31, 2015 1:20 pm
- Forum: Python
- Topic: tty/shell/session
- Replies: 11
- Views: 2012
tty/shell/session
I've got a python program putting out diagnostic text on the HDMI using log_output cmds . While I'm waiting for something interesting to happen it would be nice to edit some programs in nano. The problem is the python program's output keeps intruding. I tried <ctrl> <alt> <F2> to give me another tty...
- Sat Jul 18, 2015 11:47 pm
- Forum: Troubleshooting
- Topic: STICKY: WiFi Dongle Issues ? Start here !
- Replies: 581
- Views: 772788
Re: WiFi Issues ? Start here !
Can someone please tell me where to find out what the difference between 'ifup --force wlan0' and 'ifup wlan0' is?
- Fri Jul 17, 2015 1:43 am
- Forum: Troubleshooting
- Topic: STICKY: WiFi Dongle Issues ? Start here !
- Replies: 581
- Views: 772788
Re: WiFi Issues ? Start here !
When you say compile the driver, you mean run that shell script? When I got the 0bda:0179 dongle working on the Pi2B I found I had to run the script every time I powered up the 2B, the new driver didn't seem to be available in perpetuity? On the subject of power I'm running 5.1v 2A plugpacks with sh...
- Thu Jul 16, 2015 8:12 am
- Forum: Troubleshooting
- Topic: STICKY: WiFi Dongle Issues ? Start here !
- Replies: 581
- Views: 772788
Re: WiFi Issues ? Start here !
Where do I find or what is PiWiFi? If you run command uname -a this will show the kernel build. It is the number with # at the beginning of it. Thnx, that's a kind offer. uname -a yiedls 3.18.7-v7+ #755 PiWiFi was a typo, I meant Pi WiFi as in WiFi connectivity for the Pi. You obviously know your s...
- Tue Jul 14, 2015 1:48 am
- Forum: Troubleshooting
- Topic: STICKY: WiFi Dongle Issues ? Start here !
- Replies: 581
- Views: 772788
Re: WiFi Issues ? Start here !
Finally, after all my wandering in the WiFi wilderness, something worthwhile on PiWiFi. So I got a copy of the tar &, sure enough, ./install-8188eu.sh got one of the previously inoperable realtek WiFi dongles (obda:0179) running, Yea! However the other 2 recalcitrants (obda:8179 & obda:818b)...
- Sun Jul 12, 2015 2:30 am
- Forum: Compute Module
- Topic: RPiCM HDMI ESD Protection
- Replies: 12
- Views: 4744
Re: RPiCM HDMI ESD Protection
I've managed to blow up 3 or 4 RPis, models ranging from the B (just 2 USB ports) to the B+ to the quad core. It always seems to happen when I plug or unplug the HDMI without removing the Pi 5v power first. The symptoms are always the same, increased current consumption, hotter main processor, no mo...
- Mon Jan 05, 2015 12:26 pm
- Forum: Troubleshooting
- Topic: HDMI dignostics
- Replies: 6
- Views: 1002
Re: HDMI dignostics
Nothing actually. Just booted it up to do some code development & no HDMI. Then I noticed it was running really hot, actually surprised to find it still alive via SSH.
- Mon Jan 05, 2015 11:50 am
- Forum: Troubleshooting
- Topic: HDMI dignostics
- Replies: 6
- Views: 1002
Re: HDMI dignostics
Yeah HDMI cable & monitor OK 'cause my B+ Pi works fine with them. Micro on the B is running at 86 celsius, tried turning off the HDMI with tvservice -0, no difference. Reminds me of an early model Android phone I had a few years ago, got really hot in my pocket one day & battery life after ...
- Mon Jan 05, 2015 11:45 am
- Forum: Troubleshooting
- Topic: HDMI dignostics
- Replies: 6
- Views: 1002
Re: HDMI dignostics
Yeah HDMI cable & monitor OK 'cause my B+ Pi works fine with them. Micro on the B is running at 86 celsius, tried turning off the HDMI with tvservice -0, no difference. Reminds me of an early model Android phones I had a few years ago, got really hot in my pocket one day & battery life after...
- Sun Jan 04, 2015 2:02 am
- Forum: Troubleshooting
- Topic: HDMI dignostics
- Replies: 6
- Views: 1002
HDMI dignostics
My B model Pi has lost HDMI output, is drawing 1A from the 5v suplly & the reg is running red hot. However the poor little beast is responding to pings & I can still SSH into it. Are there any diagnostic commands I can use on the cmd prompt to find out what the problem is?
- Fri Nov 21, 2014 11:57 pm
- Forum: Beginners
- Topic: GPIO hysterisis with Python
- Replies: 7
- Views: 2060
Re: GPIO hysterisis with Python
Good point if max drive & schmitt trigger are selected by default I guess. Still, if I wasn't kept at arms length from the hardware in python, I'd probably have a play with the asychronous rising edge detect register to see just how fast a transition the thing could pick up.
- Fri Nov 21, 2014 5:40 am
- Forum: Beginners
- Topic: GPIO hysterisis with Python
- Replies: 7
- Views: 2060
Re: GPIO hysterisis with Python
Thnx muchly. Seems like there is a whole machine language layer in there that Python can't get to?
- Thu Nov 20, 2014 12:49 am
- Forum: Beginners
- Topic: GPIO hysterisis with Python
- Replies: 7
- Views: 2060
GPIO hysterisis with Python
Have worked out how to setup an input & even engage a pullup resistor with Pyhton so it doesn't float on open circuit. However http://www.mosaic-industries.com/embedded-systems/microcontroller-projects/raspberry-pi/gpio-pin-electrical-specifications suggests that it may be possible to configure ...
- Wed Nov 12, 2014 11:48 am
- Forum: Beginners
- Topic: life of Pi WiFi
- Replies: 3
- Views: 1028
life of Pi WiFi
OK, rookie mistake. Bought a $4 WiFi dongle of ebay without checking the wiki first. It was one of.....RT5370 USB-ID 148f:7601 Advertised on eBay as RT5370 chipset but has Mediatek 7601T chip instead. [9] DOES NOT WORK out of the box; requires compiling a driver downloadable from mediatek.com Compil...
- Thu Oct 30, 2014 11:27 pm
- Forum: Beginners
- Topic: Inverting a GPIO pin
- Replies: 17
- Views: 3805
Re: Inverting a GPIO pin
Much obliged Joan. Is there a go to document that has all this detail on what packages have how much overheads?
- Thu Oct 30, 2014 2:05 am
- Forum: Beginners
- Topic: Inverting a GPIO pin
- Replies: 17
- Views: 3805
Re: Inverting a GPIO pin
I forgot to mention the Pi is busy with some other processing intensive tasks so I really need to be using DMA style PWM, I can't afford to bog it down in a software loop.
- Thu Oct 30, 2014 12:59 am
- Forum: Beginners
- Topic: Inverting a GPIO pin
- Replies: 17
- Views: 3805
Re: Inverting a GPIO pin
Pretty humble newby stuff. I'm just driving a bicolour 2 wire led on P1 pins 11 & 12. I can do green by holding pin 11 lo & PWMing 12, or red by taking pin 11 hi but I can't do orange (antiphase).
- Thu Oct 30, 2014 12:22 am
- Forum: Beginners
- Topic: Inverting a GPIO pin
- Replies: 17
- Views: 3805
Re: Inverting a GPIO pin
Wow, impressive! So I have to load up C to do that? Is there a way to do it with the python that comes with noobs?
- Wed Oct 29, 2014 11:09 pm
- Forum: Beginners
- Topic: Inverting a GPIO pin
- Replies: 17
- Views: 3805
Re: Inverting a GPIO pin
Just need a pair of antiphase square waves Joan (fixed 50% duty cycle) so very interested to hear of your trivials to do this please.
- Wed Oct 29, 2014 4:11 am
- Forum: Beginners
- Topic: Inverting a GPIO pin
- Replies: 17
- Views: 3805
Re: Inverting a GPIO pin
thnx klricks the rdp is a bit more user friendly than the SSH. Surely I can get antiphase out of the Pi without resorting to external hardware Tao?