Gravity: ADS1115 16-Bit ADC Module

SKU: DFR0553

The DFRobot I2C ADS1115 16-bit ADC module, which enhances analog signal collection for Raspberry Pi/Arduino by offering features like a 16-bit ADS1115 chip, 3.3-5V power, 4 analog channels (expandable to 8), plug-and-play capability, precision reference, and PGA for weak/variable signals, making it compatible with Gravity series sensors and easing analog sensing for main controllers.

Front of I2C ADS1115 ADC Module for Arduino & Raspberry Pi-DFRobot product sku:DFR0553 image.
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  • Specification

    Parameter Value
    Supply Voltage (VCC) 3.3~5.0V
    Analog Signal Detection Range 0~VCC
    Number of Analog Channels 4
    ADC Bits 16 Bit
    Operating Current 2~3mA (Not include sensor module)
    Interface Type Gravity I2C
    Interface Level High 3.3V, Low 0V
    Product Size 32mm * 32mm(1.26in * 1.26in)

    Pinout

    Num Label Description
    \ VCC Power VCC( 3.3~5.0V)
    - GND Power GND(0V)
    C SCL I2C Bus Clock Line
    D SDA I2C Bus Data Line
    A Analog In Analog Input Channels: A0, A1, A2, A3
    ADDR I2C Address I2C address selection switch,I2C address: 0x48, 0x49

    FAQ

    • The ALERT/RDY (2) pin was left disconnected on the board. This results in the requirement to poll the board. You cannot hook the ALERT/RDY pin to an GPIO and use it as a interrupt. The requirement to poll the ADC results in higher SOC resource consumption and lower SPS. Can you put the ALERT/RDY on a header so it can be connected?

      Bonjour,
      Votre module ads115 (dfr0553) fonctionne très bien, mais ne peut utiliser que 2 adresse i2c (48 et 49).
      Est-ce que vous envisagez de modifier votre produit pour pouvoir utiliser les 4 adresses possibles (48, 49, 4A et 4B), comme c'est possible sur votre module mcp23017 (dfr0626) ?
      D'avance merci pour votre réponse.
      Bruno Martineau.

    • How do these two ADC modules cascade? Any sample code?
      If cascade is needed, you need to set the I2C address of one ADC module to 0x48 and the I2C address of another ADC module to 0x49. Connect the two ADC modules to the I2C bus interface of the main control board.

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