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by exartemarte
Wed Feb 04, 2015 4:51 pm
Forum: General discussion
Topic: RS up to their tricks again...
Replies: 99
Views: 12143

Re: RS up to their tricks again...

So I called them and they said that they realised “the B+ case doesn’t fit the new RP2” so they cancelled them off every order. That's odd - I have mine in an SBC B+ case and it's fine. Pimoroni B+ cases don't fit and I've read there are problems with some fancy cases that have internal heatsinks a...
by exartemarte
Wed Feb 04, 2015 3:44 pm
Forum: General discussion
Topic: RS up to their tricks again...
Replies: 99
Views: 12143

Re: RS up to their tricks again...

Pimoroni responded very quickly but only offered the purchase of a new layer at £2.00 plus £3.00 postage which would raise the price of the case to more than I think it is worth. I am therefore recycling an excellent, cheap and cheerful SBC B+ case which fits the Pi2 perfectly. If you are tempted t...
by exartemarte
Wed Feb 04, 2015 1:52 pm
Forum: General discussion
Topic: RS up to their tricks again...
Replies: 99
Views: 12143

Re: RS up to their tricks again...

I learned my lesson with RS at the time of the original launch. It wasn't the interminable delays so much as the fact that they took my money on day one. I've bought a number of Pis since then, and lots of other stuff, but nothing from RS. Ordered one from Rapid Electronics yesterday (Tuesday), and...
by exartemarte
Wed Feb 04, 2015 1:02 pm
Forum: General discussion
Topic: RS up to their tricks again...
Replies: 99
Views: 12143

Re: RS up to their tricks again...

I learned my lesson with RS at the time of the original launch. It wasn't the interminable delays so much as the fact that they took my money on day one. I've bought a number of Pis since then, and lots of other stuff, but nothing from RS. Ordered one from Rapid Electronics yesterday (Tuesday), and...
by exartemarte
Wed Feb 04, 2015 1:10 am
Forum: General discussion
Topic: RS up to their tricks again...
Replies: 99
Views: 12143

Re: RS up to their tricks again...

I learned my lesson with RS at the time of the original launch. It wasn't the interminable delays so much as the fact that they took my money on day one. I've bought a number of Pis since then, and lots of other stuff, but nothing from RS.
by exartemarte
Tue Dec 23, 2014 10:53 am
Forum: Raspbian
Topic: USB, Ethernet doesn't work on Pi B+ when using image from B
Replies: 29
Views: 25558

Re: USB, Ethernet doesn't work on Pi B+ when using image fro

For the record the hard drives - OS, data and data backup - are all self powered so I don't think this will be a power supply problem. Even so, have you tried setting the higher current option for the USB ports in config.txt? max_usb_current=1 No, but since it's working I haven't tried anything ver...
by exartemarte
Tue Dec 23, 2014 2:36 am
Forum: Raspbian
Topic: USB, Ethernet doesn't work on Pi B+ when using image from B
Replies: 29
Views: 25558

Re: USB, Ethernet doesn't work on Pi B+ when using image fro

I realise this won't help those without Ethernet or usb but, for what it's worth, I replaced the B Rev 2 running my NAS server with a B+ a few weeks after the B+ came out, using the same OS (on HDD) and, apart from the minor problem described below, it's fine. Before swapping the hardware I upgraded...
by exartemarte
Fri Nov 14, 2014 11:49 pm
Forum: General discussion
Topic: Model A, A+ Issues. (Solved)
Replies: 35
Views: 5293

Re: Model A, A+ Issues. (Solved)

Both of mine are fine with a cheapo Realtek chipset wi-fi adapter plugged directly into the USB port, tested by transferring sd card and wi-fi from a working B and accessing via ssh. (The sd card is a micro that was in a mini adapter on the B.) I am running them headless, though - no HDMI or anythin...
by exartemarte
Thu Nov 13, 2014 1:41 pm
Forum: General discussion
Topic: Model A+ has landed ladies and gentleman
Replies: 65
Views: 8580

Re: Model A+ has landed ladies and gentleman

Well, here's somewhere it fits very nicely - or will do when I manage to get some M2.5 standoffs.

Image
by exartemarte
Tue Nov 11, 2014 10:53 pm
Forum: General discussion
Topic: Model A+ has landed ladies and gentleman
Replies: 65
Views: 8580

Re: Model A+ has landed ladies and gentleman

There seems to have been a sudden run on 12mm M2.5 standoffs, here at least http://www.toby.co.uk/content/catalogue ... -Mx+Series.
by exartemarte
Mon Nov 10, 2014 10:21 pm
Forum: General discussion
Topic: Model A+ has landed ladies and gentleman
Replies: 65
Views: 8580

Re: Model A+ has landed ladies and gentleman

Ordered two from Farnell around eleven o'clock this morning. Got notification they had been shipped just after twelve.
by exartemarte
Sun Nov 09, 2014 2:27 pm
Forum: General discussion
Topic: Model A sold "only" 100,000 units - a flop ?
Replies: 87
Views: 12269

Re: Model A sold "only" 100,000 units - a flop ?

I don't know whether selling "only" 100,000 makes it a flop, but I have bought A's for small robot projects because of the reduced power requirement. An A+ with reduced footprint, mounting holes, non-protruding micro-sd card, expanded GPIO and better power management, which will run the stuff I've d...
by exartemarte
Sun Nov 09, 2014 2:00 pm
Forum: Beginners
Topic: Will there be an A+ now that there is a B+?
Replies: 24
Views: 3734

Re: Will there be an A+ now that there is a B+?

I just wish I could think of something I'd want to do with an A+... I have a small robot project that would benefit from the reduced footprint, as well as the non-protruding micro-sd card and the mounting holes. I think I might put it on hold for a few days and see what transpires ... http://www.ex...
by exartemarte
Mon Sep 15, 2014 12:04 pm
Forum: General discussion
Topic: New web browser - it's here!
Replies: 129
Views: 32047

Re: New web browser - it's here!

Thank you for checking it out. I confess I was only trying the browser in a spirit of curiosity. My actual use of RPis (NAS, robotics, general electronic messing about) doesn't require a web browser. I like the idea of the Pi as a simple, basic workstation, though, which is why I keep an eye on deve...
by exartemarte
Sun Sep 14, 2014 7:26 pm
Forum: General discussion
Topic: New web browser - it's here!
Replies: 129
Views: 32047

Re: New web browser - it's here!

I installed Raspbian on a new B+ using the NOOBs card that came with it - a virgin install. It wasn't the latest version - no Epiphany - but it checked out okay. Midori downloaded a simple web page of my own (html, text and pictures - nothing clever) in around 2s, which is normal for a Pi. Wanting t...
by exartemarte
Sat Jun 07, 2014 8:55 pm
Forum: Automation, sensing and robotics
Topic: Reading TCRT5000 ir sensor
Replies: 5
Views: 7252

Re: Reading TCRT5000 ir sensor

I finally got around to playing with an actual TCRT5000, after buying a handful on eBay. On 5v, with a 220 ohm resistor for the LED, a 10K pull-up for the phototransistor, and the output feeding directly into an Arduino digital input, I got consistent black white detection. My test piece is laser-pr...
by exartemarte
Wed Feb 26, 2014 10:14 pm
Forum: General discussion
Topic: Replacement SD Card Reader?
Replies: 31
Views: 17982

Re: Replacement SD Card Reader?

You're welcome - I'm glad it worked for you. Those thin plastic card readers really are quite fragile.

For others who might find this thread there is a bit more detail, including how I removed the broken card reader, here: http://exartemarte.me.uk/wp/?p=3.
by exartemarte
Fri Jan 17, 2014 7:48 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: pi send scale values to arduino realtime i2c
Replies: 6
Views: 1658

Re: pi send scale values to arduino realtime i2c

Forgot to add - to do this in real time you will simply have a continuous loop in your Python code which gathers the slider values, sends them to the Arduino, and carries on doing that indefinitely.
by exartemarte
Fri Jan 17, 2014 7:40 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: pi send scale values to arduino realtime i2c
Replies: 6
Views: 1658

Re: pi send scale values to arduino realtime i2c

Let's simplify: what you are trying to do is to send two values from a program running on a Pi to an Arduino, using i2c. I can't tell you how to do that because I haven't used i2c, but there are plenty of people here who have and will probably help once the issue is made clear. I'm sure it can't be ...
by exartemarte
Wed Jan 15, 2014 4:52 pm
Forum: Python
Topic: Learning Python with Nim
Replies: 3
Views: 2474

Re: Learning Python with Nim

The blog link appears to be broken. Can you post your Python Nim code, please? I'm trying to create a similar game! :) Sorry about that - I had to move to a different host and forgot to update this link. I've fixed it now and it should work: let me know if there are any more problems, and good luck...
by exartemarte
Thu Jan 09, 2014 1:31 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Amplify IR signal
Replies: 11
Views: 2998

Re: Amplify IR signal

For LEDs requiring more current than is available from a controller port, I generally use the ULN2003 (7 channel) or ULN2803 (8 channel) open-collector darlington drivers. They are cheap, widely available, and there are plenty of examples of how to used them on the web. If you have a problem then no...
by exartemarte
Sun Jan 05, 2014 12:49 pm
Forum: General discussion
Topic: Number of Rev1 boards in the wild
Replies: 23
Views: 8443

Re: Number of Rev1 boards in the wild

Burngate wrote:Quote from Eben, Front page 5th September 2012:
Two 2.5mm (drilled 2.9mm for M2.5 screw) non plated mounting holes have been provided to assist with ATE test mounting.
Either that, or they're spares in case your polos lose their holes
Won't work - polos are designed for bigger screws.
by exartemarte
Sat Jan 04, 2014 5:45 pm
Forum: Camera board
Topic: Raspberry Pi Camera Board with CS mount Lens
Replies: 61
Views: 33489

Re: Raspberry Pi Camera Board with CS mount Lens

DougieLawson wrote:What happens when the folks you write to reply with a reference to the reply from Pressdram in the case of Arkell vs Pressdram, 1971?

I'll let you look it up.
Thanks for that - I needed a chuckle!
by exartemarte
Tue Dec 31, 2013 12:40 am
Forum: Beginners
Topic: ir gpio need help
Replies: 6
Views: 822

Re: ir gpio need help

If it was used with a PC serial port you could try a USB/serial converter like this. They are very cheap on eBay. I have a couple of them, and although I haven't tried them on a Pi I have used them successfully with Debian Linux on PC and laptops - didn't even have to install a driver.
by exartemarte
Mon Dec 30, 2013 1:47 pm
Forum: General discussion
Topic: Cheap base for RaspberryPi
Replies: 25
Views: 3568

Re: Cheap base for RaspberryPi

I have used several of the bottom-half-of-a-case solutions. My preference is the SB Components case - it's small and neat, the walls are quite low and the Pi clips securely into the base. And if you do use the top half, it's got apertures for just about everything including a nice wide one for the G...

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