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by domesday
Thu Jan 24, 2013 8:58 pm
Forum: HATs and other add-ons
Topic: Reset pin on ATMega328
Replies: 3
Views: 1158

Re: Reset pin on ATMega328

You will find reset on the ICSP header.
by domesday
Tue Jan 08, 2013 11:27 am
Forum: Other projects
Topic: MagPi January 2013
Replies: 4
Views: 2799

Re: MagPi January 2013

There isn't one because of Christmas and New year holidays the next Edition will be Feb.
by domesday
Sat Dec 29, 2012 9:43 am
Forum: HATs and other add-ons
Topic: "Clear" a sketch from the "Arduino"
Replies: 7
Views: 4876

Re: "Clear" a sketch from the "Arduino"

The sketch is loaded into the flash memory, so think of it just like flashing an OS image on your Raspberry Pi SD card. Each time you plug the power in it will load this image, only with a microcontroller it loads virtually instantly.
by domesday
Fri Dec 28, 2012 12:43 pm
Forum: HATs and other add-ons
Topic: Has anyone used the motor driver with a 6v motor / PSU?
Replies: 4
Views: 1336

Re: Has anyone used the motor driver with a 6v motor / PSU?

You will get a voltage drop of about 1.5V across the controller anyway so you would be giving the motor about 7.5V at full power so you could probably get away with it if you are not running it for long periods.
by domesday
Fri Dec 28, 2012 12:41 am
Forum: HATs and other add-ons
Topic: Has anyone used the motor driver with a 6v motor / PSU?
Replies: 4
Views: 1336

Re: Has anyone used the motor driver with a 6v motor / PSU?

The L6203 H-Bridge driver used on the Gertboard kit is a heavy duty DMOS motor driver that has a minimum input voltage rating of 12V it works at 9V for many people but due to manufacturing tolerances may not work for all. You will need a more powerful motor or an external motor controller board that...
by domesday
Sun Dec 09, 2012 3:03 pm
Forum: HATs and other add-ons
Topic: Gertboard kit
Replies: 11
Views: 3979

Re: Gertboard kit

Yes, the Gertboard is tied to Farnell as Gert has an exclusive arrangement with them. Anyone can make a clone of the Gertboard or something very similar but the name Gertboard is trademarked so it would not be able to use the name 'Gertboard'. Because Gert is part of the Raspberry Pi team the Gertbo...
by domesday
Tue Dec 04, 2012 10:03 pm
Forum: HATs and other add-ons
Topic: Gertboard availablilty
Replies: 9
Views: 2067

Re: Gertboard availablilty

It strikes me that product launch hiccups in technology are far from unusual. True but as they say you measure someone by how they deal with things when problems arise. Seemingly Farnells way of dealing with problems is to stick their their head in the sand and hope it goes away rather than communi...
by domesday
Tue Dec 04, 2012 9:32 pm
Forum: HATs and other add-ons
Topic: Gertboard availablilty
Replies: 9
Views: 2067

Re: Gertboard availablilty

I'm not sure why anyone would be surprised looking at Farnells track record so far, and after all this debacle the PiFace designers chose to go with Farnell as well, you would have thought they would have been frightened off by all the problems with the Gertboard but apparently not. http://www.youtu...
by domesday
Mon Dec 03, 2012 10:56 am
Forum: HATs and other add-ons
Topic: Knock off board
Replies: 15
Views: 4398

Re: Knock off board

As they are clearly describing as an alternative to a Gertboard and not using the trademark getboard then it is quite legal. It is clearly very different from the Gertboard as well so nobody can accuse them of making a direct copy, not that there is any law that would prevent that.
by domesday
Tue Nov 27, 2012 11:47 am
Forum: HATs and other add-ons
Topic: Gertboard compared to Arduino
Replies: 3
Views: 1564

Re: Gertboard compared to Arduino

In some respects the Gertboard is an Arduino add-on for the reaspberry Pi as it has an ATMega microcontroller on it.
by domesday
Mon Nov 19, 2012 3:06 pm
Forum: HATs and other add-ons
Topic: No more Gert... kits
Replies: 98
Views: 15652

Re: No more Gert... kits

Gert has confirmed http://www.raspberrypi.org/phpBB3/viewtopic.php?f=42&t=20981&p=209517#p209517 that as far as Farnell is concerned the kit version of the Gertboard is no more, so the only option will be to buy a ready assembled version. Tandy may continue to do a kit but as the boards have to come...
by domesday
Tue Nov 13, 2012 12:15 am
Forum: HATs and other add-ons
Topic: Gert Board Discontinued?
Replies: 73
Views: 15200

Re: Gert Board Discontinued?

So... In ten years or so, somebody will think "We're not getting enough electronics students into universities" and decide that what the world needs is a cheap, barebones component set that can be used by kids at home and encourage them to take up electronics.... This is the problem with any techno...
by domesday
Thu Nov 01, 2012 9:54 am
Forum: HATs and other add-ons
Topic: Where can I get replacement 5 pin resistor array?
Replies: 9
Views: 2143

Re: Where can I get replacement 5 pin resistor array?

Seeing as how you could be anywhere in the world it is not easy for people to suggest where to order components from. Perhaps update your profile with your location then you might get some suggestions.
by domesday
Mon Oct 29, 2012 3:20 pm
Forum: HATs and other add-ons
Topic: keyboard problem
Replies: 3
Views: 1023

Re: keyboard problem

Probably drawing to much power from your Raspberry Pi for your PSU to handle.
by domesday
Sun Oct 28, 2012 2:58 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Problem with GPIO (beginner)
Replies: 8
Views: 1689

Re: Problem with GPIO (beginner)

The GPIO on the Pi is very confusing not least because the numbering scheme has changed so some older tutorials use the old numbers. Perhaps also for a beginner the fact that the GPIO pins can be assigned as either a simple IO or a special purpose such as SPI/I2C can be confusing.
by domesday
Sat Oct 27, 2012 6:29 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Problem with GPIO (beginner)
Replies: 8
Views: 1689

Re: Problem with GPIO (beginner)

I'm not convinced that the ribbon cable is the best way to go but when you say it doesn't work what exactly do you mean, do you get any errors reported when you try to run the program ? Are you certain you are using the correct numbers on the GPIO with your ribbon cable ? The circuit doesn't look ri...
by domesday
Thu Oct 25, 2012 10:30 pm
Forum: HATs and other add-ons
Topic: Gert Board Discontinued?
Replies: 73
Views: 15200

Re: Gert Board Discontinued?

While 'Gert' is a name 'Gertboard' is a made up word by combining two words and therefore qualifies as unique for the purpose of trademarks.
by domesday
Thu Oct 25, 2012 5:12 pm
Forum: HATs and other add-ons
Topic: Gert Board Discontinued?
Replies: 73
Views: 15200

Re: Gert Board Discontinued?

Mike I think that is unlikely, It is more than likely that Gert has updated the board design in such a way that it is easier to be made by machine and is being payed a royalty for each one produced for using the design and Gertboard name. I know Farnell have seemingly made life hell for Gert due to ...
by domesday
Wed Oct 24, 2012 6:59 pm
Forum: HATs and other add-ons
Topic: Silly question
Replies: 8
Views: 1789

Re: Silly question

All that seems to be is an extender to plugs into the SD card slot so you could hide your device away somewhere but still get the the SD card. It won't connect to a gertboard as the gertboard has no SD card slot.
by domesday
Wed Oct 24, 2012 3:48 pm
Forum: HATs and other add-ons
Topic: No more Gert... kits
Replies: 98
Views: 15652

Re: No more Gert... kits

I spent a lot of time on the phone today trying to get to the bottom of this and here is what I found. 1. Farnell have some Gertboards in (UK) stock that are being used to fill backorders, my guess is that the selection of parts for kits are being put together in the UK and sent in batches to variou...
by domesday
Mon Oct 22, 2012 6:29 pm
Forum: HATs and other add-ons
Topic: Gertboard vs. Arduino 32-bit Due
Replies: 27
Views: 15956

Re: Gertboard vs. Arduino 32-bit Due

What is the point in comparing the two ??

Does the Arduino Due have on-board ethernet? errm no!, does it run Linux ?

Does the Raspberry Pi handle real-time applications? have lots of IO ? Errm, no!

You are comparing apples with grapes.
by domesday
Sun Oct 21, 2012 11:04 am
Forum: HATs and other add-ons
Topic: Missing parts in gertbord kit
Replies: 4
Views: 1253

Re: Missing parts in gertbord kit

You can use 74HC244 or 74AC244, however you should contact farnell and ask them to send the missing part.
by domesday
Thu Oct 18, 2012 5:01 pm
Forum: HATs and other add-ons
Topic: Gertboard Assembly Thread
Replies: 162
Views: 21349

Re: Gertboard Assembly Thread

You are not the only one to damage the pad for C17 see this thread http://www.raspberrypi.org/phpBB3/viewt ... 42&t=19128
by domesday
Wed Oct 17, 2012 9:55 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: What kind of LED's?
Replies: 5
Views: 867

Re: What kind of LED's?

Normal LEDs have a voltage of between 2 and 4V depending on the colour. Typically they will be... Red/Orange 2V Yellow 2.1V Green/Blue/White 3.3V (Some Blue 4V) These are the native forward voltages, but there are LEDs that are made specially to run on a particular voltage such as 12V car battery an...
by domesday
Wed Oct 17, 2012 9:47 am
Forum: HATs and other add-ons
Topic: Gertboard Assembly Thread
Replies: 162
Views: 21349

Re: Gertboard Assembly Thread

I made the mistake of putting the LEDs the wrong way round because I was in a bit of rush and didn't follow the instructions. I assumed the white line on the PCB was the cathode (flat edge) but it isn't. I'm not sure what that line is supposed to mean.

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