Pellet Level Monitor with HC-SR04 and ESP8266

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Making a Pellet Level Monitor with HC-SR04 and ESP8266-

So, with this in mind, my idea is to create a device to monitor pellet levels and integrate it with Home Assistant for notifications.

 

You need:

4 pcs 6x2 magnets

1 pcs D1 mini

1 pcs HC-SR04 sensor

 

More info.  https://www.tastethecode.com/making-a-pellet-level-monitor-with-hc-sr04-and-esp8266