mod-NTC

#include <Microfire_Mod-NTC.h>
Microfire::Mod_NTC::i2c ntc;
void setup() {
  Serial.begin(9600);
  Wire.begin();
  ntc.begin();
}

void loop() {
  ntc.measureTemp();

  Serial.println((String)ntc.tempC + " °C");
  delay(1000);
}

esphome:
  name: microfire-mod-ntc
esp32:
  board: esp32dev
  framework:
    type: arduino
logger:
api:
ota:
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:
    ssid: microfire-mod-ntc
    password: !secret wifi_failover
captive_portal:

# import the mod-ntc component
external_components:
  - source:
      type: git
      url: https://github.com/u-fire/ESPHomeComponents/

# https://esphome.io/components/i2c.html
i2c:
  sda: 21
  scl: 22

sensor:
  - platform: mod_ntc
    id: ntc
    name: Temperature
    beta: 3950

button:
  - platform: factory_reset
    name: Restart with Factory Default Settings

This example uses the esp32dev board, make sure to change it as needed. Change the wifi section to your network and password. Check that the i2c section is using the correct pins.

4.

➡️ Upload

Type esphome run mod-ntc.yaml. It will compile the project and ask you which serial device to upload the code to. After that, you’ll see the ESP debug output. If everything goes to plan, you should see a device has been discovered in Home Assistant.

5.

🏠 Home Assistant

From within Home Assistant, press Settings > Devices & Services and find the device in the ESPHome integration box. Click it and then click where it says 1 Device. You should see a screen with all the information, conductivity measurement, and some buttons to calibrate and reset the device. You can create dashboards, scripts, and anything else Home Assistant can do from here.

There are more examples for various combinations of sensors/modules on our ESPHomeComponents GitHub repo.

import Microfire_Mod_NTC
ntc = Microfire_Mod_NTC.i2c()
ntc.begin()
ntc.measureTemp()
if ntc.status:
  print("Error: " + ntc.status_string[ntc.status])
else:
  print(str("{:.3f}".format(ntc.tempC)) + "°C")
  print(str("{:.3f}".format(ntc.tempF)) + "°F")
  print(str("{:.3f}".format(ntc.tempK)) + "K")