DFRobot_PH Library

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This is the sample code for Gravity: Analog pH Sensor / Meter Kit V2, SKU:SEN0161-V2

WARNING: There is no temperature compensation implemented in this library. Although you can provide the temperature it is not used.

Table of Contents

• Methods
• Compatibility
• History
• Credits

Methods

/*
 * @brief The new optional constructor to allow multiple pH sensors
 *
 * @param phPin: The pin of the pH sensor i.e. A0
 */
DFRobot_PH(int phPin);

/*
 * @brief Init The Analog pH Sensor
 */
void begin();

/*
 * @brief Convert voltage to PH
 *
 * @param voltage     : Voltage value
 *        temperature : Ambient temperature
 *
 * @return The PH value
 */
float readPH(float voltage, float temperature);

/*
 * @brief Calibrate the calibration data
 *
 * @param voltage     : Voltage value
 *        temperature : Ambient temperature
 *        cmd         : enterph -> enter the PH calibration mode
 *                      calph   -> calibrate with the standard buffer solution, two buffer solutions(4.0 and 7.0) will be automaticlly recognized
 *                      exitph  -> save the calibrated parameters and exit from PH calibration mode
 */
void calibration(float voltage, float temperature, char* cmd);

Compatibility

MCU	Work Well	Work Wrong	Untested	Remarks
Arduino Uno	√
Leonardo	√
Meag2560	√

History

• date 2018-11-6
• version V1.0
  • Inital version
• date 2020-04-18
• version V1.1
  • Update to allow multiple pH sensors each with their own calibration

Credits

Written by Jiawei Zhang(Welcome to our website)