RFlink case with Antennas and NodeMCU support

[Edit 17/11/17]
Added a new top version, where the NodeMCU is positionned on the center, so that the pin of the NodeMCU and the pin of the Mega2560 are out of line, making usage of dupont plugs more easy to position.
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RFlink is an awesome tool to make home automation.
In addition to a NodeMCU, the device can be anywhere in the house where the RF signal can be optimum. The NodeMCU can be used in two ways to make it network-enabled:
- Use ESP Esay to implement a ser2net solution. Th