Raspberry Pi Forums

johndough

Hi Cisco refer to the # sign as a pound sign in their coding. One way to get a # sign without directly typing it is Alt + 0035 # on this keyboard layout, or cut and paste # # # The above show as 3 # marks but are actually a Liberation sans, Alien Encounters and Arial. The Alien encounters is a 'u' b...

johndough

Y Given a 3 phase supply and balanced loads there will be little (no) current in a neutral conductor, but just in case there is it is ok (and done) to connect the neutral point to a stake in the ground and use the Earth (note capital) as a conductor (its actually pretty good since it has huge cross...

johndough

Hi This topic reminded me of how water towers were monitored. Large water tank 50 feet up, provided reserve for fire sprinklers etc, with a pulley wheel (gin wheel) on the edge of the tank. A float was connected via a swr (steel wire rope) and the wire passed through the gin wheel and down to eye le...

johndough

Hi I don't know what you are trying to do, but that doesn't stop me having a say... You can control relays from the PI, low voltage Sainsmart which in turn can switch higher, even mains voltage. Now to have an area or section where mains should not or must not appear suggests items that could cause ...

johndough

Hi

Perhaps read through some of the MagPi editions.

http://www.themagpi.com/

johndough

Hi

Is the gate a slide Left to Right? Is it a swing thru 90 or more degrees?

There is another thread about something similar

http://www.raspberrypi.org/forums/viewt ... 22#p619622

Automated gate.

johndough

Hi Well I am a little confused, it started with you asking what I think... At this time of the morning? I see a screenshot on the BBC that says "One product family One platform One store" Which platform? I got mostly Intel processors, so ... or is it the PC, so me laptop gets ignored? "Windows 10 wo...

johndough

Hi Do it the other way around. You need a motor, a reduction gearbox. On the output shaft of the gear fit a sprocket from a small motorcycle. On the gate stretch and fit a length of bycicle chain, the is under tension and a few millimetre clear of the metalwork. When the motor/gearbox is fixed and c...

johndough

Hiya

MAINS ELECTRICITY IS LETHAL.

Maybe something here that could help...

http://www.raspberrypi.org/forums/viewt ... 17#p544917

If in doubt please ask.

johndough

Siddique wrote:I can't download NOOBS .zip file, and since I am using university internet, so torrent not allowed . how to download it, my kit will reach in a day or two.

Hi

What kit did you buy?

Was the sd card not included?

Have you tried the direct download? http://www.raspberrypi.org/downloads/

johndough

Hi

Learning to Drive?

Get a self drive hire car and just sit in the back seat.

Oh! you already have.

johndough

Hiya My solution is to try Linphone I have used it on my iMac, called to iPhone. It does Win XP, most Linux Distro's and it seems to have an android etc version. I do have FaceTime, but not everyelse does, Linphone looks like everyone can have and use it. ERRrrrrr is it possibly a lack of XP3 as sug...

johndough

Hi A little out of my depth, but... ################################ Prolific offers complete USB to Serial/UART and Parallel/Printer interface bridge solution for Windows, Mac, Linux, and Android platform. Prolific provides perfect solution to connect your legacy peripherals and application to any ...

johndough

creatrixtiara wrote:Per RedditGifts' guidelines I'm not allowed to publicly mention the school (privacy concerns). I can share it privately, however.

OK.

johndough

Hi

Which school?

johndough

Hi

Looking from the other end and finding low current white LED's that could possibly be controlled by the GPIO

Bulb Size: 0.8mm x 1.1mm
Forward Current If: 5mA
Forward Voltage: 2.85V
LED Colour: White

and seeing if they could be cobbled into a cluster.

johndough

I purchased 1 channel Keyes relay (5V~12V) for testing purpose. The relay is driven by a 9V battery. I want to on/off the relay via Pi GPIO 25pin without the success. Why? Because GPIO outputs 3.3V signal only? Thanks! Hiya Well the picture shows a Songle 5 volt relay, so the 9v and 3v3 don't match...

johndough

Hi

Is this of any use?

http://va3paw.com/2014/03/16/hsmm-mesh-on-raspberry-pi/

The picture at the end suggests to me it might.

johndough

Hi I know. ################################ Googling around found this... http://va3paw.com/2014/03/16/hsmm-mesh-on-raspberry-pi/ As a result, the dongle did not work in Raspbian out-of-the-box. Luckily, the source code of a driver was available from mediatek.com which I promptly downloaded to the P...

johndough

BUS 001 Device 008: ID 148f:7601 Ralink Technology, Corp. I'm running Raspbian, kernel is 3.12.22+. Still can't get it to work. Hi Duck Duck Go for ralink drivers gets you to http://www.ralinktech.com/en/ then in the drivers section hunt around for... MT7601U USB 9/13/2013 v3.0.0.4 Linux http://www...

johndough

"You would be amazed at how many people I keep off my WiFi using it." Hi I just list allowed mac addresses to connect, the list is only 4 devices long. Wireless MAC Filtering Allow All Devices, unless in Wireless Filter List X Deny All Devices, unless in Wireless Filter List tone 10:68:xx WiPiwhite ...

johndough

I am doing a test to see if I can break into different types of networks for a project for school and I would like to see if one network is harder to break into if at all and I would like to know how to do this and I have already chosen network security as my summer project. Hi Well I hope you don'...

johndough

Hiya The programmable clock will tell you how many hours it has been on by extrapolation. IE: Twice a day for 4 hours is 8 hours, multiply by the days. Connecting an 'Hours Run' meter to the boiler will tell you how many hours the boiler has been asked for heat. Difference the 2 figures. This doesn'...

johndough

Hi there, so I've seen plenty of posts about controlling a relay using the GPIO ports, but what if I want to do the reverse? Specifically, I want to monitor a 24VAC output. I'm assuming the best things to do would be to have that go to a relay and them have the other side of the relay hooked into t...

johndough

Poundland seems to have just realised there's life beyond composite video and scart, and my local store (Chichester) has 1m HDMI leads for..well, you know! A tad short, but a good price if you need to get one locally. I've just bought a couple to check them out and the display looks fine. Hi I have...

Search found 254 matches

Re: £ Instead of Pound Sign #

Re: Mains AC voltage into GPIO (dont do it !!!)

Re: Detecting 250VAC voltage/current of deep well pump motor

Re: Mains AC voltage into GPIO (dont do it !!!)

Re: beginner

Re: Automatic Gate Using Rpi

Re: windows 10 thoughts ??

Re: Automated Gate

Re: None wanting to use a relay switch

Re: NOOBS .zip download issue

Re: absolute beginner

Re: Is M$ shafting XP Skype users??

Re: Magnetic strip reader (MSR)?

Re: Resources for a school in need in Malaysia

Re: Resources for a school in need in Malaysia

Re: Ultra Bright LEDs

Re: TTL - 250V/10A AC Relay Module Connection

Re: Connecting a Wifi Router to eth0

Re: Ralink RT7601 - Can't get it to work

Re: Ralink RT7601 - Can't get it to work

Re: Raspbian not connecting to hidden SSID WiFi network

Re: wifi on Raspberry Pi

Re: Detecting mains voltage

Re: Monitoring a 24VAC relay

Re: HDMI Leads - £1 in poundland (UK)