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mention that the wifi module is embedded in the ESP8266, to be clearer that user doesn't need to buy an extra module/accessory
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If you have not purchased the Arduinos yet, you could consider using the ESP8266 ("Arduino""Arduino-likelike" with embedded wifi module, and not much more expensive, depending on the project size). Then you use your laptop as a server, and each ESP8266 sends the data via wifi to the laptop.

Arduino as a client (via wifi): https://www.arduino.cc/en/Reference/WiFiClient

If you have not purchased the Arduinos yet, you could consider using the ESP8266 ("Arduino"-like with wifi module, and not much more expensive, depending on the project size). Then you use your laptop as a server, and each ESP8266 sends the data via wifi to the laptop.

Arduino as a client (via wifi): https://www.arduino.cc/en/Reference/WiFiClient

If you have not purchased the Arduinos yet, you could consider using the ESP8266 ("Arduino-like" with embedded wifi module, and not much more expensive, depending on the project size). Then you use your laptop as a server, and each ESP8266 sends the data via wifi to the laptop.

Arduino as a client (via wifi): https://www.arduino.cc/en/Reference/WiFiClient

Source Link

If you have not purchased the Arduinos yet, you could consider using the ESP8266 ("Arduino"-like with wifi module, and not much more expensive, depending on the project size). Then you use your laptop as a server, and each ESP8266 sends the data via wifi to the laptop.

Arduino as a client (via wifi): https://www.arduino.cc/en/Reference/WiFiClient