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by ianajo
Thu Jan 31, 2013 3:48 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

ianajo said: "...the assembled board can also plug straight onto the Pi." I know - that's the way I've been working since mine arrived a few days ago. However, I'd like to separate them and wanted to make sure I got the right cable. And one supplier (who currently offers only f-to-f cables) is adve...
by ianajo
Thu Jan 31, 2013 2:11 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

Why do you need that if you have the schematic?[/quote]

We need to forget this one now

Although I am sure such layout drawing will exist

As I said earlier "so not available"
by ianajo
Thu Jan 31, 2013 12:42 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

Difference between kit and assembled board? As far as I can tell from photographs, the kit's GPIO header (J1) extends through to the top of the board with pins - meaning that a female-to-female cable can be used to connect the board to the RPi. Yet my assembled board has only the socket on the bott...
by ianajo
Mon Jan 28, 2013 11:06 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

example.jpg Apart from, you know, it being right in front of you, on the PCB. Do you perhaps mean schematic? I have the wiring schematics. I mean a picture/pattern/map (simple example above) call it what you like, of the board copper track layout. And perhaps my eyes are not as young and working as...
by ianajo
Mon Jan 28, 2013 9:57 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

Gert van Loo wrote:
...I was unable too find a drawing/diagram of the pcb track layout. I wonder is there such a thing available anywhere.
Uhhh.......
It is a two layer board. You don't need a track layout as you have it in front of you when you look at the PCB.
OK Thanks, so, not available.
by ianajo
Mon Jan 28, 2013 8:42 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

No, you can't cut the track. The 5V is connected to a plane going everywhere. The 5V jumper is in also used in case you mount the switch-mode-supply parts and then you can place one or two jumpers connecting the SMPS output to the board. OK thanks for that info. I was unable too find a drawing/diag...
by ianajo
Mon Jan 28, 2013 6:20 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

No, the text is wrong. Originally there was a GND and a 5V pin. But I did not liked putting 1-2A through only one pin. So I doubled them up but did not correct the text. Sorry. OK. but does the 5v feed track run thro both J24 pins (bottom to top direction) to the regulator, so if the track was cut ...
by ianajo
Mon Jan 28, 2013 1:40 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

I expect it's "the case of the missing s". Bet it was meant to say pins, not pin.
[/quote]

There's only 1 lower PIN on a 2 PIN header

Maybe a bit of track that should "missing" ?????
by ianajo
Mon Jan 28, 2013 12:59 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 27
Views: 5936

Re: Farnell assembled Gertboard

RE J24 2pin HEADER ON ASSEMBLED GERTBOARD The rev2 user manual for the assembled board says "A 5V power supply comes onto the board from the Raspberry Pi, and if you need this voltage it can be accessed from the lower pin (marked 5V)". The 5v is also present on the other pin (higher) of J24 the pins...
by ianajo
Thu Jan 24, 2013 7:21 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 47
Views: 9051

Re: Farnell assembled Gertboard

Rev 2 latest board has unpopulated 2pin header (reset) points on board near to power components. I soldered a 2pin female header to them and stuck a 2wire tactile button into the header. The button you see on the case is a corkboard (noticeboard) pin plastic head is cut down and the steel pin also s...
by ianajo
Thu Jan 24, 2013 6:48 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 47
Views: 9051

Re: Farnell assembled Gertboard

Boxed male headers from http://www.ebay.co.uk/sch/i.html?_trksid=p3984.m570.l1313&_nkw=%09+5+Pcs+2.54mm+Pitch+2x13+Pin+26+Pin+Male+Straight+IDC+Box+...&_sacat=0&_from=R40 Case from http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313&_nkw=BerryBlack+Case+by+CYNTECH+&_sacat=0&_from=R40 Modified ...
by ianajo
Thu Jan 24, 2013 4:10 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 47
Views: 9051

Re: Farnell assembled board

Pictures of boxed male header ribbon
Zoom in to see DNC pins are removed
IMAG0039.jpg
IMAG0039.jpg (50.08 KiB) Viewed 4301 times
IMAG0029.jpg
IMAG0029.jpg (63.21 KiB) Viewed 4301 times
by ianajo
Wed Jan 23, 2013 9:31 pm
Forum: HATs and other add-ons
Topic: Farnell assembled Gertboard
Replies: 47
Views: 9051

Re: Farnell assembled board

Arrived this morning 23/1/2013
24hrs after I ordered.
I've made a female to male(boxed) ribbon.
So I can use it with the Pi still in its case.
Great.
by ianajo
Wed Jan 16, 2013 11:18 pm
Forum: Beginners
Topic: Reclaim SD Card
Replies: 5
Views: 1618

Re: Reclaim SD Card

Download "SDFormatter" on to your PC a simple and free program
by ianajo
Sat Dec 15, 2012 12:57 pm
Forum: Python
Topic: Grumpy Mike's instructions for PCF8591
Replies: 50
Views: 27096

Re: Grumpy Mike's instructions for PCF8591

Managed to get A to D potread going.
Read something somewhere on net about copy and paste not always working in certain situations.
So typed up progamand all OK.

Thanks for help
by ianajo
Wed Dec 12, 2012 7:31 pm
Forum: Python
Topic: Grumpy Mike's instructions for PCF8591
Replies: 50
Views: 27096

Re: Grumpy Mike's instructions for PCF8591

Checked all connections. Re copied your python program bus = SMBus(1) for REV2 board (already sussed this) Now reports File "potread.py", line 13 SyntaxError: Non-ASCII character '\xc2' in file potread.py on line 13, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details ...
by ianajo
Tue Dec 11, 2012 10:07 pm
Forum: Python
Topic: Grumpy Mike's instructions for PCF8591
Replies: 50
Views: 27096

Re: Grumpy Mike's instructions for PCF8591

sudo python potread.py
File "potread.py", line 14
reading = bus.read_byte(0x48) # read A/D
^
SyntaxError: invalid syntax

Total Novice
Above is result when I run ADC POTREAD program
Can you help please

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