What Arduino Do I Need…

Projects Networking, Protocols, and Devices
1

So I’m thinking of buying a Arduino Ethernet Shield 2 from the shop. I’m curious if I will be able to view a web app I made in JavaScript using its web server capabilities, and to make a mastodon bot. I’ve read on the page it can connect to the internet but I was wondering if I need a different type of arduino as there could be others for different things.

Please let me know, thanks.

Just want to make sure that I’m getting the right thing and not something totally different.

2

You want to connect it with a cable?
Or would you like wireless better?

3

Preferably a cable.

4

Fine with me. I was unsure if you realized that ethernet is via a cable... (ethernet is not often used with arduino).

5

If you use a shield it is difficult to move to another type of board later on...
It is rather easy to run out of memory with uno, so you might want to take a more capable board. Boards with ten times more memory go for lower prices than uno...

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6

There is also an uno with built in ethernet...

7

Which one do you recommend for an always online bot that posts updates on platforms like mastodon. I’m not sure if it’s possible, I’d assume so.

8

Sorry, I have no experience with all that. Maybe someone else can do a recommendation.

9

I would suggest a cable.

10

Will the ethernet shield be the only thing connected to the Arduino?

11

The standard ethernet shield for Uno also fits on a Mega. If you have other stuff to go on the Arduino, you might be better off getting a Mega in the first place, as it has far more memory and the ethernet shield is a bit of a memory hog.

12

If you want a cheap, effective board that can connect to the internet, buy the Arduino Uno R4 Wifi. It has an internet connection and enough memory to bot post on platforms.

13

No built in ethernet.

for OP
Honestly, If you don't need ethernet and can just use WiFi, I would recommend a ESP32.

Note:
(I know you are asking about a Arduino, but maybe consider a Pi................. It might actually end up to be cheaper)

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14

perhaps tell us what the project is?
draw up a requirement specification?
once you have a requirement specification you have some idea of the hardware required to implement it

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15

I can't recommend the R4. If you look at this thread: Wifi stops connecting after a while - #5 by dccontrarian

there is a problem where it stops connecting after a while and the only solution is a hardware reset.

I haven't worked with it that much and have already discovered a couple of bugs in the libraries. It's not ready for prime time if you have an application where reliability is important.

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16

I agree with @anon92864395 the ESP32 is a good choice - it has onboard WiFi, Bluetooth Classic and BLE, plenty of flash, SRM and IO facilities - fairly low cost at about £7 in UK

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17

I may end up going with a PI, I only ask about an arduino because of my school project. I like how the arduino works and love the idea sort of speak. But I guess if the pi has less headaches I may end up going with that. The last time I checked tho lol, it was sort of expensive, but maybe… :thinking:.

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18

From my experience with both(not much), both have give headaches, but different types of problems.....

True, but only $15 USD for a Zero(or something)....

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