Good day! is it possible to do it?
The arduino's are connected to 3 serial of Mega, while the NMCU is connected to Mega also.
Possible to do WHAT ?
You’ve already got everything connected, what’s next ?
I mean the title.
I think its very possible, but i posted to double check.
ok, let’s start again…
You have a MEGA, and three UNOs and some other device.
They’re all connected together.
What’s your question ?
Why three UNOs ?
Maybe you should explain what you’re trying to achieve… maybe post your current code (in code tags)
Sorry, I havent been clear, what i mean is yes I have three uno's, mega and esp8266. I'd like to receive data from esp to mega and then send that data uno's in serial, now my question is, is that possible?
Follow what Galileo Galilei says, "I never guess, I do the measurements and then make the prediction."
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In a nutshell, in 95% of roles that will work - with the hardware UARTS of the MEGA. Remember to use level converters where needed.
Not that it matters, but.now there’s an ESP in the mix.
What are you trying to build ?, why do you need so many processors….
There are valid reasons, but probably not necessary.
Each of those boards can execute more than a million instructions per second….
Probably faster than all the serial messages flying around.
Show us your test code.
Is it --
UART Port Baser Serial or
SPI Port Based Serial or
I2C Bus Based Serial?
its uart.
if you wish multiple devices to communicate over serial consider using a RS485 bus
Create test sketch for the following setup to send 0x23 from ESP8266 to MEGA and then MEGA to UNOs using UART/SUART Ports.
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