Nothing can be as much as a burden, as finding yourself without toilet paper. With the power of ESP and Home Assistant, I was able to create a “smart toiletroll holder”.
The video above shows the outcome. It basically consists of a typical toiletroll holder, with some slight adjustments to the base. With the help of a ESP32, an HX711 module and a loadcell, we put together the hardware.
Through Home Assistant, we uploade the following code:
esphome: name: loadcell platform: ESP8266 board: nodemcuv2 wifi: ssid: yourssid password: yourpasswd manual_ip: static_ip: 192.168.3.21 gateway: 192.168.3.254 subnet: 255.255.255.0 # Enable logging logger: # Enable Home Assistant API api: ota: sensor: - platform: hx711 name: HX711 Value dout_pin: D0 clk_pin: D1 gain: 128 update_interval: 3s filters: - calibrate_linear: - 72750 - > 0 - 120750 - > 1 - 170750 - > 2 - 220750 - > 3 - 270750 - > 4 - 320750 - > 5 unit_of_measurement: rolls icon: mdi:paper-roll
