Micropython, NodeMCU, Six breath per minute guiding device
This is Microphython code that is for making Node MCU 's onboard LED flash for 5 seconds than PULL_UP for 5 seconds. In the 15-minutes interval. Its use is meant to help and guide breathing to six breaths per second to help Neural Induction of Physiological Relaxation. After the initial 15-minutes exercise the LED blinks with 1HZ frequency to help estimate heartbeat.