To make things easy for the common user, he wrote a library called EasyTransfer which abstracts packetized serial communications between two Arduino boards.

The Arduino GIGA R1 WiFi, priced at $72.50, combines a powerful multi-core processor with built-in Wi-Fi connectivity, making it suitable for IoT applications and wireless communication projects.

The official Arduino Blog has this week featured a new project which demonstrates ultrasonic Arduino to Arduino communication by Brazilian maker Eduardo Zola. Showing that you can communicate ...

See Efficient communication between Arduino* and Linux native processes. However, it's not easy to use the in-memory shared lock between python process and Arduino process.