Any comments on this products, what's the different of them two?

Projects General Guidance
1

Hi,
I found a MEGA2560 new version, seems better than old one?
Thanks
Adam

NEW:

OLD:

2

If your project needs WiFi, I suppose that the top one is "better". If you don't use the Wifi, they are, functionally, the same.

1 Like
3

Thanks.
that have a big difference of price? why?

4

I don't know. The top one (Mega + WiFi) should be more expensive, but it is from China.

I see no price on the bottom one (Mega only), but the other Mega boards are petty expensive. Perhaps due to the chip shortage.

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5

Apart from the kudos(?) of owning one, why would you want a Mega 2560?

I mean I think I have one here somewhere for experimentation, but have no particular use for it. Do you have a use for one? :face_with_raised_eyebrow:

1 Like
6

Thanks.
for home automation system which need lot of inputs.

7

I mean I think I have one here somewhere for experimentation, but have no particular use for it. Do you have a use for one?

RAM, Digital IO pins, 3 hardware serial ports, analog input pins, hardware interrupt pins, Port F and Port K all lined up in nice orderly rows, PWM pins, other than that I can't think of a thing.

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for home automation system which need lot of inputs.

study Bit manipulation, Port F and Port K. short and simple: the 16 pins on the bottom left hand side in the image above are arranged just right, both physically and electrically, to control 2 8 digital SSR relays by changing one 8 bit byte per port. you can change the status of one relay, or all 8 simultaneously, with one command

8

NOT Arduino! Do you see the Arduino logo?

9

And don't claim to be either...

11

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