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by rooster
Fri Nov 15, 2013 10:50 am
Forum: Automation, sensing and robotics
Topic: audio output ac or dc
Replies: 5
Views: 1895

Re: audio output ac or dc

thanks for the above replies

I'll try and put together something over the weekend!

R
by rooster
Wed Nov 13, 2013 4:11 pm
Forum: Automation, sensing and robotics
Topic: audio output ac or dc
Replies: 5
Views: 1895

audio output ac or dc

I want to use the audio out to control a relay (yes I know this isn't the best way but I am using the Pi to prototype something else) which controls the power to a device. Is it possible for the audio output to output a DC voltage? If I make a wav file with a +32000 to -32000 sin wave, I get a tone....
by rooster
Fri May 10, 2013 11:14 am
Forum: Automation, sensing and robotics
Topic: viewing the SD card via usb
Replies: 2
Views: 703

viewing the SD card via usb

Hi I have an SD card running the Pi with the archived data I want to retrieve. I want to stick the SD card in an SD card reader into the computer USB and copy over the files. On ubuntu this works, I get 2 folders open up (/dev/sdb1 and /dev/sdb2) On windows this only opens up one folder which is not...
by rooster
Wed Feb 13, 2013 9:17 pm
Forum: Automation, sensing and robotics
Topic: bluetooth dongle (again)
Replies: 12
Views: 16964

Re: bluetooth dongle (again)

There is a serious bug with the current version of Raspbian and Bluetooth. If you boot the Pi from cold with the dongle attached it doesn't get initialised, however it does when you insert it into the USB ports after boot up. There is obviously a script missing some calling, I don’t know where but ...
by rooster
Tue Feb 12, 2013 3:49 pm
Forum: Automation, sensing and robotics
Topic: bluetooth dongle (again)
Replies: 12
Views: 16964

Re: bluetooth dongle (again)

lsusb quick reply, thanks! so if my hcitool dev shows up nothing, running lsusb may get hcitool dev to find it? I thought lsusb was just showing me what devices are connected? I better check whether when my hcitool dev fails to find a device this is because lsusb shows a bluetooth device or not R
by rooster
Tue Feb 12, 2013 3:33 pm
Forum: Automation, sensing and robotics
Topic: bluetooth dongle (again)
Replies: 12
Views: 16964

bluetooth dongle (again)

Sometimes after boot my iusb dongle is recgnised and hcitool dev finds the device. Sometimes not.

What command could I use to reprompt the Pi to look for the usb connections? What part of the boot sequence does this happen?

Thanks
by rooster
Tue Feb 05, 2013 8:47 am
Forum: Automation, sensing and robotics
Topic: connecting to rpi using bluetooth
Replies: 5
Views: 4222

Re: connecting to rpi using bluetooth

This may give some pointers regards Bluetooth PAN http://blog.kugelfish.com/2012/10/look-ma-no-wires-raspberry-pi-bluetooth.html http://en.wikipedia.org/wiki/Personal_area_network So, I went through http://blog.kugelfish.com/search/label/Raspberry%20Pi and got to sudo pand -c C8:BC:C8:E1:E5:C5 --ro...
by rooster
Tue Feb 05, 2013 8:42 am
Forum: Automation, sensing and robotics
Topic: hellish usb intermittency
Replies: 2
Views: 703

Re: hellish usb intermittency

I've got a 7 port usb hub, powered from the mians and connected (and powering) the RPi. On bootup, the bluetooth dongle connected to the hub is recognised 3 out of 4 times, seemingly at random (using hcitool dev). If I unplug the bluetooth and plug it back in, it is recognised every time. Why could...
by rooster
Sun Jan 27, 2013 3:40 pm
Forum: Automation, sensing and robotics
Topic: hellish usb intermittency
Replies: 2
Views: 703

hellish usb intermittency

I've got a 7 port usb hub, powered from the mians and connected (and powering) the RPi. On bootup, the bluetooth dongle connected to the hub is recognised 3 out of 4 times, seemingly at random (using hcitool dev). If I unplug the bluetooth and plug it back in, it is recognised every time. Why could ...
by rooster
Wed Jan 16, 2013 3:22 pm
Forum: Automation, sensing and robotics
Topic: usb camera and pi
Replies: 4
Views: 1847

Re: usb camera and pi

jamesh wrote:The main processing chip (SoC) has a built in GPU which has a CSI-2 port on it. This is a very high bandwidth device capable of 1080p30 input of raw sensor data. Much quicker than any webcam.
thanks!
by rooster
Tue Jan 15, 2013 2:30 pm
Forum: Automation, sensing and robotics
Topic: usb camera and pi
Replies: 4
Views: 1847

Re: usb camera and pi

It will be using the Arm to encode, which is slow. Also, you might be hitting USB performance issues (dropped packets have been noted on USB webcams). You can try reducing the webcam's resolution to see if that helps. The CSI camera will not suffer the above issues. Thanks Jamesh So, does the CSI h...
by rooster
Tue Jan 15, 2013 11:06 am
Forum: Automation, sensing and robotics
Topic: usb camera and pi
Replies: 4
Views: 1847

usb camera and pi

Hi I've been using a usb camera to record video using ffmpeg. The pi is doing some other stuff at the same time (GPS and some bluetooth communications). The video is coming out very stuttery and I'm not sure why 1 - RAM associated with GPU? I'm using 512 RAM Pi and have given half to GPU 2 - codec -...
by rooster
Tue Jan 15, 2013 11:01 am
Forum: Automation, sensing and robotics
Topic: connecting to rpi using bluetooth
Replies: 5
Views: 4222

Re: connecting to rpi using bluetooth

Cloudcentric wrote:This may give some pointers regards Bluetooth PAN

http://blog.kugelfish.com/2012/10/look- ... tooth.html

http://en.wikipedia.org/wiki/Personal_area_network
thanks! been a bit busy but will look again after holiday!

R
by rooster
Thu Jan 10, 2013 11:58 am
Forum: Automation, sensing and robotics
Topic: connecting to rpi using bluetooth
Replies: 5
Views: 4222

connecting to rpi using bluetooth

Hi

Is it possible to get files from raspberry pi via blutooth? ie if my files are on the pi webserver, how can I get them to my laptop via bluetooth?

Thanks

R
by rooster
Thu Dec 20, 2012 11:19 am
Forum: Automation, sensing and robotics
Topic: driving a relay using usb
Replies: 1
Views: 884

driving a relay using usb

I've been using the gpio to drive a relay and wondered if it was possible to do using a usb?

ie is it possible to plug the usb into the pi and the other end strip off the usb connector and connect 2 data wires to the relay. will the usb be recognised? how would i send the signal down the usb?

R
by rooster
Thu Dec 13, 2012 3:36 pm
Forum: Automation, sensing and robotics
Topic: connectors
Replies: 1
Views: 532

connectors

Hi I am trying to connect some sensors to my breakout board driven by the RPi I've done usinq wires and solder or breadboard jumpers but I really want something nicer. I was thinking of soldering mini usb male/female connectors to either end of my cable and on the breakout board but I can't find any...
by rooster
Thu Dec 13, 2012 3:33 pm
Forum: Automation, sensing and robotics
Topic: Which Home Automation Technology?
Replies: 8
Views: 5579

Re: Which Home Automation Technology?

Thanks for all the responses. Rooster, I had considdered hardwiring the rPi with a Relay switch, but read about someone else doing this and they needed the relay switch and transistors and maybe resistors too, and I have no idea how to do all that or understand it enough not to mess something up. D...
by rooster
Thu Dec 13, 2012 10:04 am
Forum: Automation, sensing and robotics
Topic: Which Home Automation Technology?
Replies: 8
Views: 5579

Re: Which Home Automation Technology?

Hello All I am new to home automation, and have what I thought was a fairly simple requirement, but I just don't know which technology and components to go with, and would appreciate any help and guidance. GOAL: I want to be able to remotely turn on my heating I have an Ideal ESPIRIT HE35 Combi Boi...
by rooster
Thu Dec 13, 2012 10:02 am
Forum: Automation, sensing and robotics
Topic: Which Home Automation Technology?
Replies: 8
Views: 5579

Re: Which Home Automation Technology?

Hello All I am new to home automation, and have what I thought was a fairly simple requirement, but I just don't know which technology and components to go with, and would appreciate any help and guidance. GOAL: I want to be able to remotely turn on my heating I have an Ideal ESPIRIT HE35 Combi Boi...
by rooster
Wed Dec 12, 2012 2:58 pm
Forum: Automation, sensing and robotics
Topic: overwriting an sd card
Replies: 0
Views: 504

overwriting an sd card

Hi I have been copying and writing sd card images fine - onto new cards. When I tried to overwrite an image onto an sd card that already had an image (my image over the distribution), it failed and then refused to recognise the sd card. Is this a common issue? Is overwriting enough or does a used sd...
by rooster
Tue Dec 11, 2012 8:26 am
Forum: Automation, sensing and robotics
Topic: 3v controlled plug/socket
Replies: 3
Views: 1001

Re: 3v controlled plug/socket

this months magpi issue has a method using infra red switchable mains sockets, an easier method than the one they use (which involves decoding the on / off signal is this cheapo from dx, which is switchable via any I-r signal http://dx.com/p/ir-remote-controlled-ac-outlet-for-appliances-220v-12902 ...
by rooster
Mon Dec 10, 2012 3:19 pm
Forum: Automation, sensing and robotics
Topic: 3v controlled plug/socket
Replies: 3
Views: 1001

3v controlled plug/socket

Hi I'm looking for a mains plug or socket which can be switched on/off by the 3.3 V from the RPi GPIO. I can do it easily with a YWRobot mains relay and it works fine, I just wondered if there was anything else out there that takes care of hiding the mains voltages from the user. I want to control a...
by rooster
Wed Nov 28, 2012 6:19 pm
Forum: Automation, sensing and robotics
Topic: Led light detection
Replies: 9
Views: 4180

Re: Led light detection

I have the following message when i click on your link: "This repository has been disabled. Access to this repository has been disabled by GitHub staff due to spam. Contact support to restore access to this repository. " Any idea? Thx Morgan. Hi Morgan This is the discussion where it was announced ...
by rooster
Wed Nov 28, 2012 3:29 pm
Forum: Automation, sensing and robotics
Topic: Led light detection
Replies: 9
Views: 4180

Re: Led light detection

I have the following message when i click on your link: "This repository has been disabled. Access to this repository has been disabled by GitHub staff due to spam. Contact support to restore access to this repository. " Any idea? Thx Morgan. Hi Morgan This is the discussion where it was announced ...
by rooster
Tue Nov 27, 2012 3:02 pm
Forum: Automation, sensing and robotics
Topic: connectors
Replies: 2
Views: 1065

connectors

Hi I have been connecting my RPI via the GPIO to breadboards and connecting other things with solder or terminal blocks... I want to find some better ways of connecting wires and components without solder. ie the normal 3 wires from a peripheral maybe into a 3 wire connector with 3 pins. I can look ...

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