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Where to buy an Arduino (Ireland)

Abid Ramay
Ranch Hand

Joined: Apr 06, 2013
Posts: 43
hi all

can someone recommend a good source to purchase arduino uno R3 ? (ireland)

thanks
Jan Cumps
Bartender

Joined: Dec 20, 2006
Posts: 2510
    
  10

Abid Ramay wrote:hi all

can someone recommend a good source to purchase arduino uno R3 ? (ireland)

thanks

Are you looking for a brick and mortar shop, or an online source?

I bought mine second hand from a local barter website.

There is also this daring kickstarter project:
The 9$ arduino if you can wait a bit.


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Abid Ramay
Ranch Hand

Joined: Apr 06, 2013
Posts: 43
Are you looking for a brick and mortar shop, or an online source?

I bought mine second hand from a local barter website.

There is also this daring kickstarter project:
The 9$ arduino if you can wait a bit.


9$ arduino project looks great .. can i please ask for some on-line sources as well .. thanks
Jan Cumps
Bartender

Joined: Dec 20, 2006
Posts: 2510
    
  10

http://www.conrad.com/ce/en/search/?search=Arduino
http://www.amazon.co.uk/s?ie=UTF8&field-keywords=Arduino%2FMain%20Boards&index=computers&search-type=ss
http://ie.mouser.com/ProductDetail/Arduino/A000066/?qs=sGAEpiMZZMtE4ePzUE8d2JuFIVM5Ac0l
http://www.adafruit.com/products/50
https://www.sparkfun.com/products/11021
Richard Tookey
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Joined: Aug 27, 2012
Posts: 1084
    
  10

Abid Ramay wrote:can i please ask for some on-line sources as well


I buy pretty much everything through eBay.
Abid Ramay
Ranch Hand

Joined: Apr 06, 2013
Posts: 43
thanks all .. i just wanted to cross reference my sources .. as you know online fraud pretty much prevails .. thanks again
Abid Ramay
Ranch Hand

Joined: Apr 06, 2013
Posts: 43
one more things .. my interest in arduino is because i want to gain a better understanding of computer architecture . e.g. RISC architecture etc

my thoery is, learning on this platform will eliminate the complexities of PC e.g. no operating system . No HDD . No RAM .. ok there is RAM in arduino, given its small scale - it is not complex at all ..

please correct if i am wrong .. !!

thanks
Jan Cumps
Bartender

Joined: Dec 20, 2006
Posts: 2510
    
  10

There is RAM on the Arduino. Check the specs to see how much.

To learn RISK, you'll have to use AVR assembler language.
The canonical way to use an Arduino is in C. That language hides the machine language (RISK) instructions.
Abid Ramay
Ranch Hand

Joined: Apr 06, 2013
Posts: 43
yes agreed .. but my theory makes sense .. in terms of complexity compared to PC
Richard Tookey
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Joined: Aug 27, 2012
Posts: 1084
    
  10

Abid Ramay wrote:yes agreed .. but my theory makes sense .. in terms of complexity compared to PC


I can't 100% agree . Currently I'm primarily using PIC16F628A chips which have a RISC instruction set but just because it is RISC does not make it better than say a 68000 instruction set. All opp codes on the PIC operate on bytes and the RAM (also ROM on the bigger 16F PIC chips) is paged. One has to go though all sort of very frustrating contortions to perform even some very simple stuff like 16 bit addition. I have programmed a fair number of different microprocessors using assembler and RISC chips are definitely more challenging than non-RISC .

I have also done significant programming on the Arduino Mega 2560 but mainly in C and C++ and the use of the higher level language makes one much more productive than writing assembler. The boot loader that is installed by default in the Mega make it very very easy to do in circuit programming. My advice would be to start using your Arduino writing in C or C++ and then when you are happy and feeling adventurous you can think about using assembler. I do think that just jumping in with the assembler will be a BIG mistake.

Abid Ramay
Ranch Hand

Joined: Apr 06, 2013
Posts: 43
ok thank you guyz. you all have been very helpfull.
 
 
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