Let’s build a connected scale, which alarms us when the food bin is empty. Of course, we will be able to use the same principle to measure the weight of any other good like the honey in remote beehives, or even your own weight to visualize it somewhere in the cloud…
So, today we will:
- Measure quite small weights with an Arduino like Microcontroller
- We will need some tricks to do that
- Then, we will build a bowl for our cat which is capable to detect if no food is available anymore
- And we will send a Twitter alarm to our Smartphone
We will also slow down the clock rate of the ESP32 to fit the timing of the HX711chip, and will use an OLED display and an MQTT library.
Links:
Sketch: github.com/SensorsIot/Weight-...
HX711 library: Based on github.com/bogde/HX711. Please use the one in my Github. Otherwise, you will get a compilation error
HX711 module: bit.ly/2fBZ82W
Strain Gauges: s.click.aliexpress.com/e/Jqb2biU
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com/sensorsiot
If you want to support the channel and buy from Banggood use this link to start your shopping: bit.ly/2jAQEf4 (no additional charges for you)
Official Wemos Store: s.click.aliexpress.com/e/jUzBiIq
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