Issue #515: Add EDATEC CM4 Nano.

Author: geerlingguy

_boards_cm/edatec-cm4-nano-computer.md

@@ -0,0 +1,11 @@
+---
+layout: board
+title: "EDATEC CM4 Nano Computer"
+short_description: A tiny metal CM4 computer designed for industrial applications.
+status: production
+picture: "/images/board-edatec-cm4-nano-computer.jpg"
+github_issue: "https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/515"
+link: https://edatec.cn/en/elpc/cm4-nano.html
+videos: []
+---
+The [EDATEC CM4 Nano](https://edatec.cn/en/elpc/cm4-nano.html) is an embedded computer designed for industrial applications based on Raspberry Pi Compute Module 4. It's metal enclosure helps with heat dissipation for the CPU, wireless module and PMU. The external WiFi and Bluetooth antenna improves the reliability of wireless communication.