Hi Mekila,

it's certainly possible. For illustration, you can have a lot of quite different devices sharing a (W)LAN (PCs, printers, cameras, etc.); the same is true for microcontrollers with a LAN / WLAN interface.

At a low level, you cannot have several transmissions at the same time; but with monitoring solar cells, I guess your sampling rate is so low that the delay by serialization does not matter at all.

Perhaps you don't even need the arduino but this depends on the details of your application.

Joerg

Do You want to connect RMS100 to WiFi with the help of ESP8266? I do not recomend to do this.

What RMS100-interface You will plane to use? This is not simple task because ESP8266 has UART-TTL-interface only (and WiFi, of course).

Yes if you want to design sharing processes among different controllers.

Why do you want to use two microcontrollers at the same time? is one microcontroller not sufficient to acquire and monitor the voltage and the current of your solar cell and then store them and display them. The scanning of one I-V curve may make to last few seconds say 10 seconds. With 100 points in the curve then you have a sampling rate of 100/10= 10 samples per second. So, this task is relatively low speed task and you may not need two microcontrllers. When using more componnets in your system you have to justify its use since using extra components costs more and also reduce the system reliability.

Best wishes

Why u want to use two micro controllers?? U can do it within a single micro controller.. and please check it s not esp8622.. it s esp8266.. wifi module

thanks to all, it's very helpful to me.