Search found 92 matches
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...
- Tue Oct 25, 2016 12:00 pm
- Forum: Beginners
- Topic: SSH setup problem in raspberry Pi 3 model B via putty
- Replies: 6
- Views: 1418
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)?
- Thu Jun 02, 2016 12:12 pm
- Forum: Automation, sensing and robotics
- Topic: Pi Zero as a Camera Remote
- Replies: 15
- Views: 5795
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...
- 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: 3823
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...
- Fri Apr 10, 2015 7:17 am
- Forum: Camera board
- Topic: Camera module for object detection?
- Replies: 2
- Views: 2176
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.
- Wed Mar 18, 2015 8:24 am
- Forum: Camera board
- Topic: Anything like Pi Camera for industrial use?
- Replies: 5
- Views: 3985
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.
http://www.stemmer-imaging.co.uk
They might have something / recommend something for you.
- Wed Mar 11, 2015 1:48 pm
- Forum: Beginners
- Topic: consumption of Rpi 2
- Replies: 9
- Views: 1663
Re: consumption of Rpi 2
Oooh, That's neat.

- Wed Mar 11, 2015 12:47 pm
- Forum: Beginners
- Topic: consumption of Rpi 2
- Replies: 9
- Views: 1663
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.
Idling around 230mA up to 420mA hammering all the cores.
- Tue Feb 03, 2015 7:43 am
- Forum: Camera board
- Topic: NoIR Illuminator?
- Replies: 1
- Views: 660
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.
- Fri Dec 19, 2014 12:49 pm
- Forum: General discussion
- Topic: RPi B+ is RS Components UK top weekly seller
- Replies: 3
- Views: 874
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.
http://uk.rs-online.com/web/generalDisp ... topsellers
considering how big RS are and serve mainly commercial customers, this is very impressive.
- Sun Nov 16, 2014 3:18 pm
- Forum: Troubleshooting
- Topic: Serial port connection issue
- Replies: 12
- Views: 3959
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....
- Thu Nov 06, 2014 1:12 pm
- Forum: Automation, sensing and robotics
- Topic: Track a soccer referee
- Replies: 2
- Views: 1278
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 ...
- Tue Nov 04, 2014 8:58 am
- Forum: General discussion
- Topic: portable power supply
- Replies: 2
- Views: 1117
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...
- 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: 1863
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...
- Tue Sep 16, 2014 12:37 pm
- Forum: Beginners
- Topic: changing sleep mode in Raspberry pi (B)
- Replies: 11
- Views: 3776
Re: changing sleep mode in Raspberry pi (B)
...wishing to spam the thread.Trying to walk that fine line between offering a possible solution and not wish
Apologise for the double post (need to get a bigger phone!)
- Tue Sep 16, 2014 12:26 pm
- Forum: Beginners
- Topic: changing sleep mode in Raspberry pi (B)
- Replies: 11
- Views: 3776
Re: changing sleep mode in Raspberry pi (B)
Trying to walk that fine line between offering a possible solution and not wish
- Tue Sep 16, 2014 12:03 pm
- Forum: Beginners
- Topic: changing sleep mode in Raspberry pi (B)
- Replies: 11
- Views: 3776
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-evoluti...
- Fri Sep 05, 2014 12:03 pm
- Forum: General discussion
- Topic: Where to get smt components in small quantities ?
- Replies: 8
- Views: 1353
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).
- Thu Sep 04, 2014 12:06 pm
- Forum: Bare metal, Assembly language
- Topic: How fast a Raspberry Pi can boot?
- Replies: 21
- Views: 16750
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
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
- Wed Aug 13, 2014 8:42 pm
- Forum: General discussion
- Topic: 12mp sensor with RPI
- Replies: 4
- Views: 1664
Re: 12mp sensor with RPI
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.OCR needs high resolution pictures
- Tue Aug 12, 2014 11:59 am
- Forum: General discussion
- Topic: 12mp sensor with RPI
- Replies: 4
- Views: 1664
Re: 12mp sensor with RPI
Why? what's the project and can you do whatever with less resolution?need to use at least a 12mp cmos sensor with RPi
- Thu Aug 07, 2014 8:26 pm
- Forum: Camera board
- Topic: With IR Emitter use?
- Replies: 3
- Views: 1516
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 ...
- Wed Aug 06, 2014 8:54 pm
- Forum: Beginners
- Topic: Running Raspberry Pi off Battery?
- Replies: 7
- Views: 1996
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 whi...
- Wed Aug 06, 2014 11:58 am
- Forum: Automation, sensing and robotics
- Topic: Image Processing using Raspberry Pi
- Replies: 8
- Views: 3163
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...
- Tue Jul 22, 2014 12:11 pm
- Forum: Automation, sensing and robotics
- Topic: OpenCV Using GPU
- Replies: 11
- Views: 24235
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.
This can often lead to significant increases in FPS by tweaking the way you approach the problem.