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by SteveDee
Fri May 13, 2016 7:31 pm
Forum: Automation, sensing and robotics
Topic: Home automation project, Web page help
Replies: 9
Views: 2337

Re: Home automation project, Web page help

Why not copy / paste my 21 line php code and see if it works? If it doesn't work, it probably means you have a problem outside your code. If it does work, you probably have a problem with you code.

You could do all this in less than 10 minutes.
by SteveDee
Fri May 13, 2016 5:13 pm
Forum: Automation, sensing and robotics
Topic: Home automation project, Web page help
Replies: 9
Views: 2337

Re: Home automation project, Web page help

It may be a user group/permissions problem. See my post: http://captainbodgit.blogspot.co.uk/201 ... ccess.html
by SteveDee
Sat Mar 19, 2016 10:22 pm
Forum: Beginners
Topic: What can I use for a power supply?
Replies: 34
Views: 267925

Re: What can I use for a power supply?

...Please see the image... This is an "adaptive fast charger" so it may over-voltage in order to provide what it considers to be the required charging current. It may attempt to determine battery state by assessing voltage. But as you don't have a battery, it is not clear what this will do, so don'...
by SteveDee
Sun Feb 14, 2016 7:34 am
Forum: Troubleshooting
Topic: Raspberry Pi A+ USB port bent pins
Replies: 51
Views: 11984

Re: Raspberry Pi A+ USB port bent pins

I had no knowledge of this issue when I purchased my A+ there was no warning that I noticed? Very surprised that this is still an issue and that nothing has been done about it. There is enough chat on this one thread alone for the problem to have been taken seriously by now, over 15 months since th...
by SteveDee
Wed Aug 05, 2015 12:56 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Remove interference from long GPIO wire
Replies: 22
Views: 5543

Re: Remove interference from long GPIO wire

The reason I have not provided any data is because the relevant chip pad characteristics are not currently authorised for release.... Thanks for taking the time to reply. You are right, I am in no position to dispute datasheets that I do not have access to. But I have every right to question what I...
by SteveDee
Tue Aug 04, 2015 9:30 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Remove interference from long GPIO wire
Replies: 22
Views: 5543

Re: Remove interference from long GPIO wire

The GPIO pins are not 5V tolerant. There is no defined maximum continuous current that the ESD protection network on the GPIO pins can sustain... Well, you have not provided any data, just an opinion. I'm not convinced. The protection circuit does not kick-in below 5V, but its up to others to make ...
by SteveDee
Tue Aug 04, 2015 8:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Remove interference from long GPIO wire
Replies: 22
Views: 5543

Re: Remove interference from long GPIO wire

imho in the schema RemSwitch.png the connection to +5V should be to +3.3V. Well take a look at the link to my blog a few posts back. You have to make up your own mind, but the gpio does appear to be "5Volt safe". I would not recommend using the 3.3V supply from the Pi. There is more chance of coupl...
by SteveDee
Tue Aug 04, 2015 7:03 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Remove interference from long GPIO wire
Replies: 22
Views: 5543

Re: Remove interference from long GPIO wire

I haven't try connecting it to Pi. I only try to test the voltage first. OK, now I understand. You don't really have a circuit without the Pi connected. The two 10k resistors don't have a path back to 0Volts, so there is no current flow, making all voltage readings wrong. I suppose you could fit th...
by SteveDee
Tue Aug 04, 2015 4:32 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Remove interference from long GPIO wire
Replies: 22
Views: 5543

Re: Remove interference from long GPIO wire

I'm sorry but I've read your post a few times but just can't make much sense of it. ...and gives 1.8V when connected (although i expect around 0V). If you have connected a voltmeter (+) from the junction of the 2 resistors, to 0V (-) and connected a closed switch or link across the same 2 points, yo...
by SteveDee
Wed May 06, 2015 7:35 am
Forum: Off topic discussion
Topic: Free speech
Replies: 31
Views: 5518

Re: Free speech

...You're barking up the wrong tree.... attempting to chastise Forum Moderators by using a grossly inapplicable reason is NOT the way to get such threads tolerated. I am not a highly educated man, so Free speech, freedom of expression and censorship are closely linked in my mind. When I was young t...
by SteveDee
Tue May 05, 2015 9:26 pm
Forum: Off topic discussion
Topic: Free speech
Replies: 31
Views: 5518

Free speech

ukscone » 04 May 2015 13:02 lots of threads like this and any possible Raspberry Pi 3 is years off so pretty pointless to discuss as who knows what will be possible by then so locking You may not agree with the subject or content of this post, but it is not harmful or offensive. No one has been abu...
by SteveDee
Sun May 03, 2015 6:30 pm
Forum: Troubleshooting
Topic: VNC login as user rather than root?
Replies: 6
Views: 615

Re: VNC login as user rather than root?

vaid wrote:...How can I fix this?...
I don't know. But you could try my method: http://captainbodgit.blogspot.co.uk/201 ... rrypi.html
by SteveDee
Thu Apr 30, 2015 6:46 pm
Forum: Beginners
Topic: Control GPIO through HTML page
Replies: 12
Views: 8349

Re: Control GPIO through HTML page

Can someone please write an easier step by step guide.... If you are struggling to understand all this stuff, you may like to take a look at my notes here: http://captainbodgit.blogspot.co.uk/2015/04/raspberry-pi-gpio-control-with-php.html I think this may be about the most simple configuration, as...
by SteveDee
Thu Apr 30, 2015 5:44 pm
Forum: Automation, sensing and robotics
Topic: 5V relay - Is this a safe connection?
Replies: 7
Views: 1418

Re: 5V relay - Is this a safe connection?

Having only one working at 5V.... ...eventually is there a way to have it working using 3.3V instead of 5 V? As you have a test circuit running at 5V, you could take some measurements to assess your chances of running a similar circuit at 3.3V with a 3V relay. First consider how your circuit is wor...
by SteveDee
Sat Apr 25, 2015 6:26 pm
Forum: Troubleshooting
Topic: Canceling crontab
Replies: 14
Views: 2053

Re: Canceling crontab

Actually, never mind, I found it. Only problem is, I don't have permission to move it. Do you know how I can do that? Yeah I think I worked out that you were looking at the boot partition for the SD card. SDcard.png If you are doing this on a Pi then in terminal:- sudo pcmanfm ...which opens file m...
by SteveDee
Sat Apr 25, 2015 5:25 pm
Forum: Troubleshooting
Topic: Canceling crontab
Replies: 14
Views: 2053

Re: Canceling crontab

I've done this and I have a bunch of text files here now but what can I edit to fix it? Not exactly sure what you've done, but assuming you have the Pi SD card with the boot problem inserted in a Linux system (e.g. laptop or Pi via USB card reader). In file manager, locate the SD card and examine i...
by SteveDee
Sat Apr 25, 2015 3:27 pm
Forum: Troubleshooting
Topic: vertical lines using omxplayer to display video stream
Replies: 1
Views: 1701

Re: vertical lines using omxplayer to display video stream

...has anyone experienced with this problem before? I've been streaming video from a couple of Pi A & A+ bird boxes using this command:- su -c "raspivid -o - -w 640 -h 480 -fps 30 -t 0 | cvlc stream:///dev/stdin --sout '#rtp{sdp=rtsp://:8554/}' :demux=h264" - pi ...and have been happily viewing the...
by SteveDee
Sat Apr 25, 2015 8:03 am
Forum: Off topic discussion
Topic: completely useless info
Replies: 6
Views: 909

Re: completely useless info

The pi, when nothing is attached to it (not even sd card) consumes draws 0.09Amps of power current! ...still doesn't sound quite correct ...anyway, is this a surprise? The Pi electronic components are powered up, so will draw some current. The first row of the table in my notes roughly indicates su...
by SteveDee
Sat Apr 25, 2015 7:09 am
Forum: Troubleshooting
Topic: Canceling crontab
Replies: 14
Views: 2053

Re: Canceling crontab

...haven't had a chance to try The cd idea if you have any more, please let me know... Well, naturally you can do the same thing on the Pi with a second SD card and a USB card reader. Even if you are a die-hard Windows user, it is often useful to be able to boot your Windows box into Linux using a ...
by SteveDee
Fri Apr 24, 2015 10:35 am
Forum: Troubleshooting
Topic: Canceling crontab
Replies: 14
Views: 2053

Re: Canceling crontab

...is there any way to cancel that without the GUI or command line because I can't get to either of those. Take the SD card out of the Pi and read it via a Linux computer (I don't think this works with Windows). Navigate to: {sd card}/var/spool/cron/crontabs ...and delete your file. If you don't ha...
by SteveDee
Wed Apr 22, 2015 8:23 am
Forum: General discussion
Topic: Electric Shock
Replies: 15
Views: 3121

Re: Electric Shock

...I haven't used my Raspberry Pi in a couple of months but when i plugged it in today i get an electric shock whenever i touched any metal component.... If your shock is caused by your body holding an electrical charge (so called "static") it will be a high voltage, low energy, short duration shoc...
by SteveDee
Wed Apr 22, 2015 7:51 am
Forum: General discussion
Topic: Get radio tuner frequency
Replies: 5
Views: 1130

Re: Get radio tuner frequency

...make sure it CANNOT be powered up. ... Absolutely......if you don't have an electrical background, just cut the power lead off. Don't even plug it in to try it unless it has a valid PAT sticker (or whatever your national equivalent is). However, if you are an electrical Fundi you could replace t...
by SteveDee
Tue Apr 21, 2015 5:15 pm
Forum: Beginners
Topic: Windows Remote Desktop Connection to the same session
Replies: 5
Views: 4003

Re: Windows Remote Desktop Connection to the same session

osprey wrote:...the only thing that did not work was the hdmi_force_hotplug resolution setting from config.txt...
Take a look at my notes which may help with screen size and resolution: http://captainbodgit.blogspot.co.uk/201 ... rrypi.html
by SteveDee
Tue Apr 21, 2015 5:01 pm
Forum: General discussion
Topic: Get radio tuner frequency
Replies: 5
Views: 1130

Re: Get radio tuner frequency

You could buy an old valve radio (a huge one in a wooden cabinet). The tuning dial and cord mechanism needs to be in reasonable condition. It doesn't matter how many times the tuning knob rotates because the tuning capacitor will only turn through 180degrees. So you'd need to carefully remove the tu...
by SteveDee
Sat Apr 18, 2015 8:30 am
Forum: Camera board
Topic: Image quality comparison with alternate lens (wow!)
Replies: 11
Views: 3502

Re: Image quality comparison with alternate lens (wow!)

... the standard lens is also suffering a lot of veiling flare from the light just out of frame, I've seldom seen it so bad on my boards... Yeah, I don't think the two images are a very good comparison. The room has ceiling lights, so it is likely that the lens on the right is suffering due to lens...

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