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by fuffkin
Wed Oct 26, 2016 4:13 pm
Forum: Beginners
Topic: UART pi3
Replies: 25
Views: 5884

Re: UART pi3

dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait Try changing console=tty1 to console=serial0. There's a good article that describes exactly your problem and how to fix it here! : http://spellfoundry.com/2016/05/29/configuring-gpio-ser...
by fuffkin
Tue Oct 25, 2016 12:00 pm
Forum: Beginners
Topic: SSH setup problem in raspberry Pi 3 model B via putty
Replies: 6
Views: 1232

Re: SSH setup problem in raspberry Pi 3 model B via putty

As a start, have you tried pinging the Raspberry Pi at that IP address from the PC, to make sure it is actually up and on the network (and reachable)?
by fuffkin
Thu Jun 02, 2016 12:12 pm
Forum: Automation, sensing and robotics
Topic: Pi Zero as a Camera Remote
Replies: 15
Views: 4842

Re: Pi Zero as a Camera Remote

See what David Hunt did here : http://davidhunt.ie/wp-content/uploads/ ... hutter.png Yes, that simple transistor in the link is all you need: one for shutter release and one for focus. The transistor emulates the contact closure and the open collector means you don't really have to worry about the...
by fuffkin
Wed Mar 09, 2016 10:23 pm
Forum: HATs and other add-ons
Topic: [Sleepy Pi] Need help waking and sleeping on a schedule
Replies: 6
Views: 3554

Re: [Sleepy Pi] Need help waking and sleeping on a schedule

Hi Marantha, Which PIR Sensor are you using? Is it similar to these https://learn.adafruit.com/pir-passive-infrared-proximity-motion-sensor?view=all from adafruit? If it is, you need to power from the 5V output and yes you will need to do the SleepyPi.enableExtPower(true) to power the sensor. You mi...
by fuffkin
Fri Apr 10, 2015 7:17 am
Forum: Camera board
Topic: Camera module for object detection?
Replies: 2
Views: 2031

Re: Camera module for object detection?

The other thing to look at is SimpleCV which is a Python framework. You can do things like this with remarkably little code and with a Pi 2, I would think reasonable performance.
by fuffkin
Wed Mar 18, 2015 8:24 am
Forum: Camera board
Topic: Anything like Pi Camera for industrial use?
Replies: 5
Views: 3420

Re: Anything like Pi Camera for industrial use?

I've worked in Machine Vision for many years, and these guys are the go-to suppliers in Europe for Industrial Cameras:

http://www.stemmer-imaging.co.uk

They might have something / recommend something for you.
by fuffkin
Wed Mar 11, 2015 1:48 pm
Forum: Beginners
Topic: consumption of Rpi 2
Replies: 9
Views: 1440

Re: consumption of Rpi 2

Easy Answer :

http://www.ebay.co.uk/itm/P4PM-Digital- ... 2ed7aa653f
Oooh, That's neat. ;)
by fuffkin
Wed Mar 11, 2015 12:47 pm
Forum: Beginners
Topic: consumption of Rpi 2
Replies: 9
Views: 1440

Re: consumption of Rpi 2

Alex over at Rapi.tv does a good summary http://raspi.tv/2015/raspberry-pi2-powe ... easurement under various conditions.

Idling around 230mA up to 420mA hammering all the cores.
by fuffkin
Tue Feb 03, 2015 7:43 am
Forum: Camera board
Topic: NoIR Illuminator?
Replies: 1
Views: 568

Re: NoIR Illuminator?

850nm should be pretty good. How are you powering the illuminator? If it's not getting full juice, then you will get decreased range.
by fuffkin
Fri Dec 19, 2014 12:49 pm
Forum: General discussion
Topic: RPi B+ is RS Components UK top weekly seller
Replies: 3
Views: 776

RPi B+ is RS Components UK top weekly seller

....and the A+ comes in at number 10!

http://uk.rs-online.com/web/generalDisp ... topsellers

considering how big RS are and serve mainly commercial customers, this is very impressive.
by fuffkin
Sun Nov 16, 2014 3:18 pm
Forum: Troubleshooting
Topic: Serial port connection issue
Replies: 12
Views: 3628

Re: Serial port connection issue

The application code that is running on the Sleepy Pi in this instance, is actually talking at 9600 baud to the RPi and would come up as garbage at 115200 baud. We're hoping this could be the route cause and we're working through it.... As an aside, I'm puzzled by the SIM900 and it's voltage levels....
by fuffkin
Thu Nov 06, 2014 1:12 pm
Forum: Automation, sensing and robotics
Topic: Track a soccer referee
Replies: 2
Views: 1104

Re: Track a soccer referee

This is technically feasible to do with Image Processing per se (maybe using tools like OpenCV) where the Referee is effectively your target and you use a tracking algorithm to lock on to him. However, I think you'll find the computational power of the RPI is not up to the task - certainly not with ...
by fuffkin
Tue Nov 04, 2014 8:58 am
Forum: General discussion
Topic: portable power supply
Replies: 2
Views: 1002

Re: portable power supply

so i was wondering whether the 'Anker Astro Mini 3000mAh Power Bank External Battery Charger' is compatible with pi, I've used those puppies with the Pi and they work fine (and they are soooo cute). To date no problems with charging. My kids also use them with their mobile phones, so they've surviv...
by fuffkin
Sun Oct 05, 2014 7:33 pm
Forum: HATs and other add-ons
Topic: Sleepy pi- how to use it with my existing raspberry pi
Replies: 2
Views: 1727

Re: Sleepy pi- how to use it with my existing raspberry pi

Hi Bob, 1. I have already programmed my raspberry pi and the components are on a bread board that is attached via a GPIO. If I removed the GPIO and put the Sleepy Pi onto the GPIO headers of the pi and then put this GPIO onto the headers of the Sleepy pi, would it still work or would I have to repro...
by fuffkin
Tue Sep 16, 2014 12:37 pm
Forum: Beginners
Topic: changing sleep mode in Raspberry pi (B)
Replies: 11
Views: 3456

Re: changing sleep mode in Raspberry pi (B)

Trying to walk that fine line between offering a possible solution and not wish
...wishing to spam the thread.

Apologise for the double post (need to get a bigger phone!)
by fuffkin
Tue Sep 16, 2014 12:26 pm
Forum: Beginners
Topic: changing sleep mode in Raspberry pi (B)
Replies: 11
Views: 3456

Re: changing sleep mode in Raspberry pi (B)

Trying to walk that fine line between offering a possible solution and not wish
by fuffkin
Tue Sep 16, 2014 12:03 pm
Forum: Beginners
Topic: changing sleep mode in Raspberry pi (B)
Replies: 11
Views: 3456

Re: changing sleep mode in Raspberry pi (B)

These guys did something very similar with a solar powered bird feeder & tweeter. Because the battery would run down overnight, they turned off the Raspberry Pi overnight and back on in the morning - effectively sleeping during the night http://wearemanifold.com/feeder-tweeter-2-0-do-the-evolution/
by fuffkin
Fri Sep 05, 2014 12:03 pm
Forum: General discussion
Topic: Where to get smt components in small quantities ?
Replies: 8
Views: 1194

Re: Where to get smt components in small quantities ?

I don't know how small the quantities you need are, but with Farnell it is free next day delivery over £20 (ex vat).
by fuffkin
Thu Sep 04, 2014 12:06 pm
Forum: Bare metal, Assembly language
Topic: How fast a Raspberry Pi can boot?
Replies: 21
Views: 13262

Re: How fast a Raspberry Pi can boot?

Marko,

Those boot times are incredible! What is the functionality of these minimal loads once booted? Have you done any tests to measure the time to take an image from the camera?

Jon
by fuffkin
Wed Aug 13, 2014 8:42 pm
Forum: General discussion
Topic: 12mp sensor with RPI
Replies: 4
Views: 1510

Re: 12mp sensor with RPI

OCR needs high resolution pictures
As a sweeping statement not true. Depends what you are looking at, distance, font size, lighting etc. Effective OCR has been around for decades, long before the advent of 5MP cameras. I used to do effective OCR with old analogue cameras 768 x 578 pixels.
by fuffkin
Tue Aug 12, 2014 11:59 am
Forum: General discussion
Topic: 12mp sensor with RPI
Replies: 4
Views: 1510

Re: 12mp sensor with RPI

need to use at least a 12mp cmos sensor with RPi
Why? what's the project and can you do whatever with less resolution?
by fuffkin
Thu Aug 07, 2014 8:26 pm
Forum: Camera board
Topic: With IR Emitter use?
Replies: 3
Views: 1367

Re: With IR Emitter use?

You can use either. As a general rule (all other things being equal) the 880nm will appear to be slightly brighter as the sensor is more sensitive to it. If you want to be more covert use 950nm as these will not be seen with the naked eye. With 880nm at high power you can just make out a cherry red ...
by fuffkin
Wed Aug 06, 2014 8:54 pm
Forum: Beginners
Topic: Running Raspberry Pi off Battery?
Replies: 7
Views: 1723

Re: Running Raspberry Pi off Battery?

You could try one of the range of USB phone chargers, which are small and pack a reasonable punch. e.g. Anker Astro Mini http://www.amazon.co.uk/Ultra-Compact-Lipstick-Sized-Technology-Smartphones-Adapters-/dp/B005QI1A8C/ref=sr_1_1?ie=UTF8&qid=1407358134&sr=8-1&keywords=anker+charger which is 3000mA...
by fuffkin
Wed Aug 06, 2014 11:58 am
Forum: Automation, sensing and robotics
Topic: Image Processing using Raspberry Pi
Replies: 8
Views: 2864

Re: Image Processing using Raspberry Pi

I've been asked many times about this by potential clients during my time working in the Machine Vision Industry. To my knowledge no one has yet succeeded to get a reliable system working with Image processing doing this. One thing you can be sure of is that to get this working in a real world scena...
by fuffkin
Tue Jul 22, 2014 12:11 pm
Forum: Automation, sensing and robotics
Topic: OpenCV Using GPU
Replies: 11
Views: 21648

Re: OpenCV Using GPU

Rather than go down the GPU route, can you optimise your algorithm / processing / lighting?

This can often lead to significant increases in FPS by tweaking the way you approach the problem.

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