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 - **M2Ext**: second controller that send request to M1 for data (```0-4```) and output them on the screen and MQTT broker
     - ```/M2Ext/M2Ext.ino``` - main, actual version
     - ```/M2Ext/icons.cpp``` - icons in bitmap for GUI
-
+    - ```/M2Ext/flows.json``` - Node-red flow exported via json. Uses Node-red Dashboard extension
 ## DEVICES
 - 2x M5Stack Core2 (https://shop.m5stack.com/products/m5stack-core2-esp32-iot-development-kit)
 - NeuroSky MindWave Mobile 2 (https://store.neurosky.com/pages/mindwave)