# How to track status of global variables (and some nodes)?

**URL:** <https://discourse.nodered.org/t/how-to-track-status-of-global-variables-and-some-nodes/20338>\
**Category:** General\
**Created:** [14 January 2020 21:03 UTC](https://discourse.nodered.org/t/how-to-track-status-of-global-variables-and-some-nodes/20338 "2020-01-14T21:03:07Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![dynamicdave](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dynamicdave/32/96_2.png) [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Post date:** [15 January 2020 17:59 UTC](https://discourse.nodered.org/t/how-to-track-status-of-global-variables-and-some-nodes/20338/15 "2020-01-15T17:59:53Z")

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If it helps - here's a link to my tutorial on controlling a NeoPixel strip from Node-RED via a Wemos D1 mini (ESP8266 flashed with ESP Easy).

> [@Controlling NeoPixels](https://discourse.nodered.org/t/controlling-neopixels/4560):
>
> [Controlling NeoPixels](http://resources-area.co.uk/node-red-flows/controlling_neopixels.pdf) I've just finished writing an instruction sheet, for my IoT students, on how to control NeoPixel strips. Note: This exercise uses a WeMos D1 Mini, Node-RED and MQTT (mosquitto) and of course a NeoPixel strip. I hope you enjoy reading this as much as I enjoyed writing it. Regards from David. PS: The document, in the above link, has been updated to implement the comments from various people.

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