Go to advanced search

by johndough
Wed Mar 12, 2014 12:33 pm
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15759

Re: Relay to Switch 220v

Why endure the clicky-clack of relays? Get a solid state relay. Why? 1 - opto isolated 2 - silent 3 - interfaces directly to the 3 volt gpio ports 4 - Handles 240+ volts and up to 40 amps. Hi Well I don't know where to find such a thing. So a pair of triple pole changeover relays please, with schem...
by johndough
Wed Mar 12, 2014 11:08 am
Forum: Automation, sensing and robotics
Topic: Relay to Switch 220v
Replies: 14
Views: 15759

Re: Relay to Switch 220v

Hello, I'm completely new to electronics. I already played a bit with the Gpio's on the Raspberry Pi and with some Led's. Now I want to switch my electronic Rolling Shutters (3 in total). The Raspberry Pi works on 5V and there are Gpio's on 5v and also on 3.3v. The Rolling Shutters are powerd by 22...
by johndough
Tue Mar 11, 2014 7:14 pm
Forum: Networking and servers
Topic: Detecting attacks on WiFi
Replies: 10
Views: 4943

Re: Detecting attacks on WiFi

Hiya When the poisoning of the main lookup areas occurred, it was reckoned it would take some years to update all the routers etc around the internet. Best solution was to use the IP address of the site. Like 195.135.221.130 takes you there without a lookup and possible re-direction. 195.135.221.130...
by johndough
Tue Mar 11, 2014 6:53 pm
Forum: Troubleshooting
Topic: Formatting sd card
Replies: 4
Views: 1208

Re: Formatting sd card

Hi Can you boot your windows machine from a live linux cd? If you can then you should be able to view your 2 gig card. Create a folder on your windows disk and place the image(s) there. Then view your 4 gig card and try and replicate the file structure copying from the folder placed in windows. Plea...
by johndough
Mon Mar 10, 2014 9:17 pm
Forum: Off topic discussion
Topic: Question about power supplies (not for a Pi)
Replies: 17
Views: 2634

Re: Question about power supplies (not for a Pi)

Hi With a voltmeter, set to a voltage higher than the rated output, with the RED wire as positive the voltage should read 5.0. If it reversed it will read -5.0. Also if you change the range to AC set at double the DC voltage you should get 0.0v. If you get any AC voltage showing then the supply is n...
by johndough
Mon Mar 10, 2014 9:03 pm
Forum: Python
Topic: LED Control
Replies: 4
Views: 858

Re: LED Control

Hi import time do you need to time something, rather than just monitor a switch? Also a logic? Connect LED across pins x & y Connect switch across pins a & b When pin b is ON or HIGH or whatever, pin x is on or high ELSE pin b is low or off or something Cleanup??? Goto line ??? Count 10 and exit??? ...
by johndough
Mon Mar 10, 2014 9:50 am
Forum: Off topic discussion
Topic: LightBeam
Replies: 1
Views: 567

LightBeam

Hi Well I am surprised and shocked. Adding LightBeam to FireFox and restarting gave... google.co.uk raspberrypi.org 2 sites visited, 10 third party sites. raspberrypi.org has 6 sites watching me google.com google-analytics.com facebook.com vimeo.com vimeocdn.com twitter.com youtube.com embed.ly embe...
by johndough
Sun Mar 09, 2014 4:31 pm
Forum: HATs and other add-ons
Topic: WiFi D-Link DWA-130 (rtl8192?)
Replies: 14
Views: 5136

Re: WiFi D-Link DWA-130 (rtl8192?)

Joe Schmoe wrote:
So, again, I'm still wondering exactly why Mr. Lawson says that it can only work via "NDIS".

I know not.
by johndough
Sun Mar 09, 2014 4:28 pm
Forum: Automation, sensing and robotics
Topic: Help with the use of a transistor
Replies: 2
Views: 1344

Re: Help with the use of a transistor

Hiya

Maybe an optocoupler?

The door bell provides enough watts to power an led, so it would power an opto in an optocoupler methinks.

Then the other side is a transistor coupled to your Pi.

Google for raspberry pi + optocoupler for ideas.
by johndough
Sun Mar 09, 2014 1:20 pm
Forum: HATs and other add-ons
Topic: WiFi D-Link DWA-130 (rtl8192?)
Replies: 14
Views: 5136

Re: WiFi D-Link DWA-130 (rtl8192?)

I'm still curious as to why you think that this adapter uses "NDIS". It seems like it should be possible for it to not use NDIS. And, no, for a variety of reasons, "spending a tenner" is not an option. Hiya ###################### Google might say..... Load new driver module (may not be necessary an...
by johndough
Sun Mar 09, 2014 1:07 pm
Forum: Beginners
Topic: How Can I watch UK TV or Ireland TV?
Replies: 3
Views: 2147

Re: How Can I watch UK TV or Ireland TV?

Hi! I live in spain and the Sky has changed the satellite and I can't received signal. I have bought a Raspberry Pi, so I would like to know what I need to see UK TV Channels and Ireland TV Channels using the raspberry pi and internet. Thanks!! Hiya I live in the UK and can get over 3000 channels o...
by johndough
Sun Mar 09, 2014 12:47 pm
Forum: Beginners
Topic: TP-LINK: TL-WN620G - Pi Support
Replies: 2
Views: 878

Re: TP-LINK: TL-WN620G - Pi Support

Hiya

I have a WiPi from Farnell Element 14 that works, and works with Win Xp and OpenSuSE.

So are you wanting a WiFi or just casting around?
by johndough
Sat Mar 08, 2014 9:46 am
Forum: Beginners
Topic: Fried Gertboard and pi :-(
Replies: 12
Views: 3543

Re: Fried Gertboard and pi :-(

Hi Can we try and help with getting the system to work, assuming you get some replacement parts. For instance, the motor(s) and what they need to do? Voltage, Current, number of motor wires etc etc. Then we can work back to the Pi. For example. A simple way to control a 2 wire DC motor for setting u...
by johndough
Fri Mar 07, 2014 9:34 am
Forum: Automation, sensing and robotics
Topic: Automated ATX PSU control - Help please
Replies: 3
Views: 2177

Re: Automated ATX PSU control - Help please

Hi

Could you expand your explanation please.
by johndough
Fri Mar 07, 2014 9:29 am
Forum: HATs and other add-ons
Topic: 5V Buffered inputs Gertboard
Replies: 4
Views: 2787

Re: 5V Buffered inputs Gertboard

stiched wrote:Ok, thanks, thats good to hear, can anyone else confirm this?
Hi

Who else should?

If the designer say YES, then who cares about the man from Del Monte.
by johndough
Fri Mar 07, 2014 9:26 am
Forum: General discussion
Topic: Ac adapter and also USB Hub
Replies: 2
Views: 413

Re: Ac adapter and also USB Hub

Hi The power adapter that came with the Pi is the one to use with the Pi. The powered hub is for your accessories, and inevitably they are going to have a common USB cable between them. I do not see any voltage/current specifications for the powered hub so it is difficult to assess. If you have more...
by johndough
Tue Mar 04, 2014 9:05 am
Forum: Beginners
Topic: pi control light
Replies: 3
Views: 2749

Re: pi control light

Hello, I want to do a project with pi with following requests : 3 - the pi has to know the status of the lamp (if is on or off) Any help is really appreciated :) thank you in advance Hi 3... If the lamp has voltage supplied, and is faulty and doesn't light, what is the definition. ON or OFF? What s...
by johndough
Mon Mar 03, 2014 10:38 am
Forum: Troubleshooting
Topic: SD card partition type
Replies: 5
Views: 5219

Re: SD card partition type

The switch from CHS (cylinder-head-sector) to LBA (logical block addressing) happened for ATA hard disks around 1996, and was required to support drives bigger than 8.4GB. The partition type codes were changed so that older operating systems would not attempt to access the bigger drives in CHS mode...
by johndough
Sun Mar 02, 2014 6:44 pm
Forum: Automation, sensing and robotics
Topic: POOL COVER DOOR automation
Replies: 9
Views: 1554

Re: POOL COVER DOOR automation

the only part that I doesn't know is the DOOR opening the rest is "easy" for me ... i have already have another RPI that control my central heating system with 3 temp sensor, relays, and a servo ... The door need a lot of "force" but i doesn't know what to use to do it Hiya A possible solution is a...
by johndough
Fri Feb 28, 2014 11:38 am
Forum: Beginners
Topic: It is possible to run Windows on Raspberry as a VM
Replies: 15
Views: 2360

Re: It is possible to run Windows on Raspberry as a VM

[ The CTI is Altitude Software UCI, Ver 7.5. [/quote] Hiya Googling doesn't get any answers as I am sure you have found. However if you work for Altitude, one of the skill-sets required is CentOS (Altitude Software UCI; - Conhecimentos de Sistemas Unix (AIX/CentOS);) So googling with centos added ge...
by johndough
Fri Feb 28, 2014 11:05 am
Forum: Troubleshooting
Topic: How do I test an SD card?
Replies: 12
Views: 1921

Re: How do I test an SD card?

Hiya

I seem to prefer the line below

xzcat [image].raw.xz | dd bs=4MB of=/dev/sdx; sync
by johndough
Thu Feb 27, 2014 9:55 am
Forum: Beginners
Topic: It is possible to run Windows on Raspberry as a VM
Replies: 15
Views: 2360

Re: It is possible to run Windows on Raspberry as a VM

Good morning. Maybe it's a silly question, but I would need to run a couple of CTI developments on Raspberry. The issue is that I have an Asterisk PBX, but curiously the client does not work on Linux. Is there any way to install Windows as a virtual machine? Thank you very much and best regards Hi ...
by johndough
Tue Feb 25, 2014 12:03 pm
Forum: Beginners
Topic: Connecting to the internet?
Replies: 13
Views: 1751

Re: Connecting to the internet?

Hiya

Looks like you are on 192.168.0.xxx and the BT bit is on 192.168.1.xxx.

Try and set your Pi network to match the BT one.
by johndough
Mon Feb 24, 2014 11:05 am
Forum: Troubleshooting
Topic: rpi cant ping outside of subnet unless www
Replies: 16
Views: 2822

Re: rpi cant ping outside of subnet unless www

lan.PNG Hi None of your layout makes any sense. Perhaps you could explain what type of modem you have. EG: How many ports. In the picture I have assumed a lot. But everything is on the same network. Also there is space to expand. The Modem/Router could be configured to allow designated traffic to a...
by johndough
Fri Feb 21, 2014 11:43 am
Forum: Troubleshooting
Topic: Raspberry Pi not booting anymore
Replies: 8
Views: 1474

Re: Raspberry Pi not booting anymore

Reinstall NOOBS on your sd card?

Go to advanced search