The ESP Easy firmware supports a very large number of sensors, actuators. If you are limited by the unique analog input and the number of inputs / outputs offered by ESP8266 WiFi modules, you can add analog or digital input boards.

• Atmospheric pressure :
  • Digital Barometer BMP085 / BMP180 (atmospheric pressure)
  • BMP280 digital barometer (temperature + atmospheric pressure)
  • BME280 digital barometer (temperature + humidity + atmospheric pressure)
  • MS5611 digital barometer (atmospheric pressure from 10 to 1200mbar)
• Light Intensity
  • Light intensity measurement BH1750 (GY-302)
  • Light intensity measurement TSL2561 (GY-2561)
• Temperature and humidity measurements
  • DHT11: temperature from 0 to + 50 ° C (+/- 2°C), humidity from 20 to 95% (+/- 5%)
  • DHT22: temperature from -40 to + 80 ° C (+/- 0.5°C), humidity from 0 to 100% (+/- 2%)
  • Dallas waterproof temperature sensor DS18B20. Unsealed or waterproof sensor
  • I2C Si7021 digital probe for temperature measurement -10°C to + 85°C (+/- 4°C) and humidity 0 to 80% RH (+/- 3%)
  • Non-contact temperature sensor MLX90614 from -70°C to +380°C
• Ultrasonic proximity measurement or proximity HC-SR04
• Micro-switch (push button): DIP P4, 12x12x7.3mm with colored button
• Analog / digital converter on I2C bus. Adds additional analog inputs to the ESP8266
  • The PCF8591 adds 4 8-bit analog inputs. Available in PCB form or DIP16 case.
  • An expansion card for the Raspberry Pi is also available
• Additional digital inputs / outputs
  • The MCP23017 adds 16 I / O. Available in DIP28 case
  • The PCF8574 adds 8 I / O via the I2C bus
  • The PCA9685 adds 16 12-bit PWM channels
• Infrared receiver
• Sharp GP2Y10 dust detector
• Current measurement INA219 on I2C busdeal, 0 to 26V, 3.2A max.
• Screens
  • LCD2004 on I2C bus. 4 lines of 20 characters
  • SSD1306 OLED display on I2C bus. Several versions
    • 0.96 inches to display 128×64 pixels

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