I couldn't resist ordering one of these boards:
http://www.ebay.co.uk/itm/151278...
for £9.30 including postage.
I'll let you know what I think of it when it arrives.
It seems to be based on this PCB from ITEAD:
for £9.30 including postage.
I see some discrepancy about this board.
For a complete noob m128 is an overkill.
Most noobs won't be even able to RTFM of m128, not mentioning respective ANs. It is just too big.
M32 or M162 in PDIP + breadboard are IMHO better noob propositions (JTAGICEMk1) as one can buy 5 of them for £10 locally and it is very easy to wire that. Of course if someone owns Mk2 and up then m1284-PU is always a noob winner.
And for someone who wants something serious - wouldn't it be grand if it had at least 32kB of external SRAM?
It says it is an ATmega128A.
It isn't claimed to be intended for beginners.
It says it is an ATmega128A.
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"Experience is what enables you to recognise a mistake the second time you make it." "Good judgement comes from experience. Experience comes from bad judgement." "Wisdom is always wont to arrive late, and to be a little approximate on first possession." "When you hear hoofbeats, think horses, not unicorns." "Fast. Cheap. Good. Pick two." "We see a lot of arses on handlebars around here." - [J Ekdahl] |
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It says it is an ATmega128A.
Anyway, it is definitely usable.
They have also routed PEN to pin header!
rqyem
For a complete noob m128 is an overkill.
The photo shows a chip manufactured in 2006.
I would guess that current deliveries will use recent chips. e.g. mega128A
I am sure that Leon will get on fine with the bare dev board.
However, for a similar amount of money, you could buy an Arduino MEGA clone e.g. [url]http://www.ebay.co.uk/itm/Mega-2560-R3-ATmega2560-16AU-Board-Arduino-com... for £10.95 from UK
or [url]http://www.ebay.co.uk/itm/Microcontroller-Board-ATmega2560-16AU-USB-Cabl... for £8.55 from China.
Ok. You need an ATMEL-ICE, JTAGICE-3, DRAGON, ... to run the JTAG.
But personally, I find that the built-in UART comms + bootloader make any regular Arduino ideal for prototyping. And of course, all the shields are interchangeable.
And actually, I prefer the UNO as a general purpose platform.
David.
Nothing says you HAVE to use every last resource in it
So if I were to chose some stuff for playing with avr8s then it is either a bucket of m16/m32 or one m128+SRAM. But it is mood dependent.
It isn't claimed to be intended for beginners.
Just look at their description:
2. The AD transform reference voltage added filter inductance and capacitance;
3. Through the jump line can choose different frequency external crystals;
4. All are drawn and mark IO mouth;
5. ISP and JTAG interface are drawn and mark;
6. Reliable reset circuit;
7. PA1, PA0 out two LED for simple test
If there is any documentation, it's likely to be to a similar standard - again, not helpful for a beginner.
And support? Forget it!
This is why they're so cheap :!:
#NoSuchThingAsAFreeLunch
The board has just been delivered. It has got a Mega 128A.
I make that 9 days delivery. Pretty good service from China Post!
And I bet the date code on the 128A is 2014.
David.
The only marking that looks like a date code is AU 1333. Does that make any sense?
Week 33, Year 2013.
So I do NOT win a coconut!
David.
That's good to know. The earlier chips seem to have had several errata.
