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by Burngate
Fri Jun 21, 2019 9:43 am
Forum: Troubleshooting
Topic: Wrong Image Color
Replies: 13
Views: 612

Re: Wrong Image Color

Rupiert wrote:
Fri Jun 21, 2019 6:31 am
So: I have 6 Rpi's (half zero pi's) there all have the same cam.
Do you mean you have only one camera that you swap between the six Pis, or do you have six supposedly identical cameras, one for each Pi?
by Burngate
Fri Jun 21, 2019 9:30 am
Forum: Beginners
Topic: How to turn on a LED
Replies: 8
Views: 725

Re: How to turn on a LED

Any chance you can explain how did you know this board had a split? Is it because the red / blue lines break around row 30? That break in the red and blue lines is certainly a clue, but mainly it's just experience. Most of us have already made the same mistake, some of us several times. The same go...
by Burngate
Tue Jun 18, 2019 5:48 pm
Forum: Off topic discussion
Topic: [FIXED] Ego Search / Own Posts failing
Replies: 59
Views: 6857

Re: [FIXED] Ego Search / Own Posts failing

Depending on your browser, there is a way of fixing the width problem with the forums. I use it with Firefox and it goes full screen width for me no matter which screen I'm using. I have to admit I've not managed to find anything in Firefox like that. It's possible that an update to Firefox disable...
by Burngate
Tue Jun 18, 2019 8:55 am
Forum: Off topic discussion
Topic: [FIXED] Ego Search / Own Posts failing
Replies: 59
Views: 6857

Re: [FIXED] Ego Search / Own Posts failing

A while ago we also lost the Raspberry and the three lined burger menu icon (in mobile/narrow view) from the Title bar I don't use the mobile view (the ordinary one doesn't make enough use of my screen-width as it is - I'm sure it used to go wider, but hey-ho) but the Raspberry going missing is an ...
by Burngate
Mon Jun 17, 2019 5:37 pm
Forum: Troubleshooting
Topic: Pi 3B - Broken SD card slot
Replies: 15
Views: 597

Re: Pi 3B - Broken SD card slot

... Fatigue, caused by? Could it be heat? The Pi wasn't in a very well ventilated case, and was lying under a table in a room thats quite warm for 9 months in a year. No idea -I don't think heat cycling would have caused this - but ... for example, did a vacuum cleaner get anywhere close in that ni...
by Burngate
Mon Jun 17, 2019 10:21 am
Forum: Off topic discussion
Topic: how heavy is raspbian ?
Replies: 30
Views: 1987

Re: how heavy is raspbian ?

Heater wrote:
Sun Jun 16, 2019 6:03 pm
Squeeze enough information into a small enough space and you create a black hole!
I understood that the information stayes on the surface of the black hole - more information, larger area, so bigger and heavier black hole.
If that's so, then you can't squeeze information into a 3D space.
by Burngate
Mon Jun 17, 2019 9:29 am
Forum: Other projects
Topic: Soil sensor (2 nails) ads1115
Replies: 2
Views: 255

Re: Soil sensor (2 nails) ads1115

Why are you using a GPIO to feed the nail sensor? Wouldn't a constant 3v3 be better? You could perhaps use two GPIOs, one to each nail via its own resistor, and one output low with the other output high, and use the A-D in differential mode. Then regularly swapping the low and high around could redu...
by Burngate
Sat Jun 15, 2019 10:31 am
Forum: General discussion
Topic: System start up
Replies: 4
Views: 215

Re: System start up

... the "worst possible consequences"... ... which could be your SD card may need re-imaging. You're unlikely to damage your Pi! And it could be a good learning experience, so try it, and see what happens. It's not like removing the ignition key of a car while driving on a motorway (other than the ...
by Burngate
Sat Jun 15, 2019 10:13 am
Forum: Troubleshooting
Topic: Using GPIO
Replies: 9
Views: 313

Re: Using GPIO

Im trying to drive a L298N motor driver. motor.py does not work to drive the motor. motor2.py does work to drive the motor. motor.py: import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) GPIO.setup(26,GPIO.OUT) print "LED on" GPIO.output(26,GPIO.HIGH) time.sleep(5) pri...
by Burngate
Fri Jun 14, 2019 6:23 pm
Forum: Troubleshooting
Topic: Light sensor not working
Replies: 2
Views: 118

Re: Light sensor not working

Is it by any chance KY-018? Details are sparse, but it appears to have a 10k pull-up resistor, with the photo sensor pulling it down. If you mean it "starts working" when you unplug the sensor board from the Pi, what's actually happening is the Pi's input is floating and and stray electric fields ar...
by Burngate
Wed Jun 12, 2019 10:14 am
Forum: Graphics, sound and multimedia
Topic: Background Hiss from Audio jack
Replies: 10
Views: 478

Re: Background Hiss from Audio jack

The trouble with that is that any ground current feeding the amp will superimpose noise on the audio.
The solution - or at least one solution - is to totally isolate the audio ground from the power ground, with perhaps an audio transformer
by Burngate
Wed Jun 12, 2019 10:09 am
Forum: Troubleshooting
Topic: Help Ray change location on screen.
Replies: 11
Views: 342

Re: Help Ray change location on screen.

2) Use a proper power supply and cooling solution to make them go away Wrong answer. Or maybe right answer to wrong question. Think of it this way: He's at the bottom of the Grand Canyon, so it's rather warm and without any mains power. It seems they're stuck where they are, so could you adjust the...
by Burngate
Wed Jun 12, 2019 9:44 am
Forum: Automation, sensing and robotics
Topic: Help trying to control 3v relay using GPIO?
Replies: 4
Views: 186

Re: Help trying to control 3v relay using GPIO?

Are you by any chance trying to use the transistor to switch the 5v end of the relay instead of the ground end as in the diagram? If so, it won't work. Show us a diagram of how you've actually wired it! ... using the transistor to send a 5v pin power through a diode to the relay and back to ground. ...
by Burngate
Tue Jun 11, 2019 10:19 am
Forum: Troubleshooting
Topic: Pi 3B - Broken SD card slot
Replies: 15
Views: 597

Re: Pi 3B - Broken SD card slot

Looking at your pictures again, RznPaqQ5_o-4.jpg it looks to me there's been a fair amount of stress applied to the socket, over time. Solder joints don't normally "just give up" like that - metal fatigue is a likely culprit. No confidence in my ability to solder, Now's the time to learn. Like flint...
by Burngate
Tue Jun 11, 2019 8:53 am
Forum: Beginners
Topic: Lights are on, but nobody's home??
Replies: 6
Views: 284

Re: Lights are on, but nobody's home??

Mtl_Biker wrote:
Mon Jun 10, 2019 9:10 pm
... But peaking through a little slot between the cover and case, I saw two red leds.
Since the green LED would be off after shut-down, my guess would be that the second red one was a reflection.
by Burngate
Mon Jun 10, 2019 6:01 pm
Forum: Python
Topic: Pygame playing sounds without input...
Replies: 5
Views: 192

Re: Pygame playing sounds without input...

(from someone who may not know what he's talking about) A snipet of your code: ... try: while True: while True: if GPIO.input(29) ==1: ch1.play(pygame.mixer.Sound(Drum1)) time.sleep(0.02) break if GPIO.input(31) ==1: ... The indentation is important in Python, and the "ch1.play line" is indented les...
by Burngate
Mon Jun 10, 2019 9:33 am
Forum: Troubleshooting
Topic: USB keyboard & mouse works with one image, not another
Replies: 11
Views: 277

Re: USB keyboard & mouse works with one image, not another

... Only problem being me trying to recall how I put Icecast on this thing, and seeing what to do to preserve its config. But that's for another forum. May I also suggest creating a step-by-step textfile called something like "What-I-Did" so that a couple of years from now you'll have an easier tim...
by Burngate
Wed Jun 05, 2019 5:14 pm
Forum: Troubleshooting
Topic: Zero W boots with faults, microSD card is fine
Replies: 10
Views: 283

Re: Zero W boots with faults, microSD card is fine

I've tried multiple microSD cards with Raspbian, NOOBS, and MotionEyeOS
I'm able to boot off of those same cards just fine with my model B+
Since the Pi Zero came out after the Pi B+, make sure what's on the SD cards is up-to-date by downloading burning a fresh copy of Raspbian on a card.
by Burngate
Wed Jun 05, 2019 9:45 am
Forum: Troubleshooting
Topic: Pi 3B - Broken SD card slot
Replies: 15
Views: 597

Re: Pi 3B - Broken SD card slot

I'd go with zardoz99's suggestion if possible - his idea is better than mine!
by Burngate
Tue Jun 04, 2019 5:52 pm
Forum: Troubleshooting
Topic: Pi 3B - Broken SD card slot
Replies: 15
Views: 597

Re: Pi 3B - Broken SD card slot

I'm not sure it's possible, but the solder pads look quite clean; could you temporarily clamp an SD card onto the connections, to enable USB booting?
Maybe a suitably insulated bulldog clip could work, and save you a few quid.
by Burngate
Tue Jun 04, 2019 5:20 pm
Forum: Off topic discussion
Topic: [FIXED] Ego Search / Own Posts failing
Replies: 59
Views: 6857

Re: [FIXED] Ego Search / Own Posts failing

Good news (possibly): you do still exist in that thread - a full-site search on Duckduckgo for that thread number says so. It may be that it's just taking about a day for the present to become proper history.
by Burngate
Tue Jun 04, 2019 10:47 am
Forum: General discussion
Topic: light detector with photo transistor
Replies: 33
Views: 1034

Re: light detector with photo transistor

Much depends on how far apart the LED and phototransistor are, how bright the LED is (how much current is going through it), how much light will reach the phototransistor from other sources, ... Using PiGraham's suggestion, you may need to add an external pull-up in addition to the Pi's internal pul...
by Burngate
Mon Jun 03, 2019 6:29 pm
Forum: Beginners
Topic: Cooling system
Replies: 8
Views: 254

Re: Cooling system

The Pi 3B+ has been designed to use the board itself as a heat-spreader, and will also throttle its speed to protect itself.
Extra cooling, such as a fan or heatsinks, can help but are usually not necessary.

as for putting it by an open window ... it may get extra sunlight ...
by Burngate
Mon Jun 03, 2019 6:11 pm
Forum: Beginners
Topic: Using capacitor buffer across GPIO pins
Replies: 15
Views: 2162

Re: Using capacitor buffer across GPIO pins

Those criminals that are so skilled to bypass the low-level architecture of my system will not find anything useful where the alarm is placed to justify their time and effort ;) But that won't stop them trying. Criminals are generally by definition Thick. Our house was burgled because it was "the w...
by Burngate
Sun Jun 02, 2019 11:02 am
Forum: Advanced users
Topic: rpi 3 dead - lan9514 very hot - CHANGE lan9514 but not solved
Replies: 7
Views: 459

Re: rpi 3 dead - lan9514 very hot - CHANGE lan9514 but not solved

Having looked back over your previous posts, it seems to me you're plugging something into the USB that's destroying your USB/LAN chip.
Until you've sorted that, no amount of changing chips will cure it.

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