Component: Water Sensor (Grove 101020018) (101020018) (Environmental)
| Author | Matrix Ltd |
| Version | 1.0 |
| Category | Environmental |
Water Sensor (Grove 101020018) component
The water sensor uses a 1M ohm pull-up resistor. The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the ground trace. You can use it with an analog input pin to detect the amount of water in contact between the grounded and sensor traces.
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Downloadable macro reference
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GetIntValue |
| Returns the analog reading as an integer value. | |
| [[File:]] - | Return |
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GetFloatValue |
| Reads the analog value as a floating point value between 0 and 100 | |
| [[File:]] - | Return |
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I2C_Read_Register |
| Reads a byte value from a register on the device | |
 - BYTE
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Address |
| - BYTE
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Return |
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ReadTemperatureFloat |
| Reads the temperature as a floating point value in °C. Resultion sets the return bit value and conversion time. Calls the ReadTemperatureRaw function and then converts to a meaningful value. | |
| [[File:]] - | Return |
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Altitude |
| Calculates the altitude based on difference between actual pressure and the pressure at the sea level P0=1013.25 hPa. | |
| [[File:]] - | Return |
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Forced_Read |
 - VOID
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Return |
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I2C_Write_Register |
| Writes a byte value to a register on the device | |
| - BYTE
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Address |
| - BYTE
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Value |
| - VOID
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Return |
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Initialise |
| Starts up the I2C bus and initialises the pressure sensor ready for use. Returns 1 for a sucessful startup. Returns 0 for a failed startup or no device detected. | |
| - BYTE
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Return |
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Initialise |
| Sets up the GSM module. Returns 0 for OK, 255 for no reply and 254 for command fail. | |
| - BYTE
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Return |
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SampleAccel |
| Samples the accelerometer 0 = no new data, 1 = new data available | |
| - BYTE
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Return |
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Left |
| Rotates the robot left - waits for the angle to be traversed before returning | |
 - UINT
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Angle |
| Angle to turn in degrees | |
| - VOID
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Return |
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ReadIR |
| Reads an IR sensor 0=Left, 1=FrontLeft, 2=Front, 3=FrontRight, 4=Right, 5=RearRight, 6=Rear, 7=RearLeft | |
| - BYTE
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index |
| 0=Left, 1=FrontLeft, 2=Front, 3=FrontRight, 4=Right, 5=RearRight, 6=Rear, 7=RearLeft | |
| - UINT
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Return |
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LCDDrawPixel |
| Allows a single pixel on the LCD to be set or cleared | |
| - BYTE
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X |
| X Pixel 0-127 | |
| - BYTE
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Y |
| Y Pixel 0-31 | |
| - BYTE
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State |
| 0=White (Off), 1=Black (On) | |
| - VOID
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Return |
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ServoSetPosition |
| Allows one of the servo positions to be assigned | |
| - BYTE
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Channel |
| Range 0-3 | |
| - BYTE
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Position |
| Range 0-255 | |
| - VOID
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Return |
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CardBitmap |
| Displays a monochrome bitmap read from the card on the LCD | |
| - BYTE
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X |
| Range 0-127 | |
| - BYTE
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Y |
| Range 0-31 | |
 - STRING
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Filename |
| - BYTE
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Return |
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CardRecordMic |
| Records an audio stream on the card from the microphone | |
| - BYTE
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BitDepth |
| 0=8-bit, 1=16-bit | |
| - BYTE
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SampleRate |
| Sample Rate 0=8KHz, 1=16KHz | |
| - UINT
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RecordTime |
| Time to record for in seconds, Range 0-65535 | |
| - STRING
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Filename |
| - BYTE
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Return |
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CardOpen |
| Attempts to open an existing file on the SD card 255=Error, 1=File not found, 0=Open OK | |
| - STRING
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Filename |
| - BYTE
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Return |
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Forwards |
| Drives the robot forwards - waits for the distance to be traversed before returning | |
| - UINT
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Distance |
| Distance in mm | |
| - VOID
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Return |
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ReadBearing |
| Reads the compass bearing based on the degrees clockwise from magnetic north. | |
| [[File:]] - | Return |
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GetConsoleHandle |
| Gets the handle to the console allowing data displaying on the panel etc. | |
| [[File:]] - | Return |
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LCDDrawLine |
| Allows a single pixel width line to be drawn on the LCD | |
| - BYTE
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X1 |
| X Pixel 0-127 | |
| - BYTE
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Y1 |
| Y Pixel 0-31 | |
| - BYTE
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X2 |
| X Pixel 0-127 | |
| - BYTE
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Y2 |
| Y Pixel 0-31 | |
| - VOID
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Return |
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ServoAutoMoveToPosition |
| Allows one of the servo positions to move gradually to a new position | |
| - BYTE
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Channel |
| Range 0-3 | |
| - BYTE
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Position |
| Range 0-255 | |
| - VOID
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Return |
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ReadAllValue |
| Reads a single value stored from the read all command Index dictates which sensor value to read | |
| - BYTE
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Index |
| 0=SW, 1-8=IR, 9-10=Line, 11=Light, 12=Mic, 13-15=Accel | |
| - UINT
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Return |
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LCDBacklight |
| Allows the LCD backlight brighntess to be adjusted | |
| - BYTE
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Intensity |
| Range 0-100, 0=Off, 1=Min Brightness, 100=Max Brightness | |
| - VOID
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Return |
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LCDDrawRect |
| Allows a rectangle to be drawn on the LCD | |
| - BYTE
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X1 |
| X Pixel 0-127 | |
| - BYTE
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Y1 |
| Y Pixel 0-31 | |
| - BYTE
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X2 |
| X Pixel 0-127 | |
| - BYTE
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Y2 |
| Y Pixel 0-31 | |
| - VOID
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Return |
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ReadLine |
| Reads one of the IR line sensors 0-1 0=Left, 1=Right | |
| - BYTE
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index |
| 0=Left, 1=Right | |
| - UINT
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Return |
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ServoDisable |
| Allows one of the servo outputs 0-3 to be disabled | |
| - BYTE
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Channel |
| Range 0-3 | |
| - VOID
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Return |
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ServoEnable |
| Allows one of the servo outputs 0-3 to be enabled | |
| - BYTE
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Channel |
| Range 0-3 | |
| - VOID
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Return |
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CardReadByte |
| Reads a byte from the currently open file. Starts at the beginning of the file and auto increments to the end | |
| - BYTE
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Return |
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CardErase |
| Attempts to delete an existing file on the SD card 255=Error, 1=File not found, 0=Delete OK | |
| - STRING
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Filename |
| - BYTE
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Return |
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CardWriteByte |
| Appends a byte to the end of the currently open file | |
| - BYTE
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Data |
| - VOID
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Return |
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EncoderRead |
| Reads one of the motor encoder counters. Approx 0.328296mm of travel per encoder unit. | |
| - BYTE
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index |
| 0=Left, 1=Right | |
| - UINT
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Return |
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SetMotors |
| Sets the motor speeds without feedback Range -100 to 100 | |
| [[File:]] - | Left |
| Range -100 to 100 | |
| [[File:]] - | Right |
| Range -100 to 100 | |
| - VOID
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Return |
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Backwards |
| Drives the robot backwards - waits for the distance to be traversed before returning | |
| - UINT
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Distance |
| Distance in mm | |
| - VOID
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Return |
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EncoderReset |
| Resets the motor encoder counters | |
| - VOID
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Return |
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LCDVerbose |
| Allows the LCD to automatically report the API commands as they get processed. Default - verbose on | |
| - BYTE
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State |
| 0=Off 1=On | |
| - VOID
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Return |
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SetProp |
| Allows the COM port property to be set from a parent component. | |
| - STRING
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PropName |
 - ULONG
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PropVal |
| - VOID
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Return |
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CardInit |
| Attempts to startup the SD card 255=No Card, 254=Init Fail, 0=Init OK | |
| - BYTE
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Return |
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GetProp |
| Allows the property filter for the COM port list to be copied to a parent component. | |
| - STRING
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PropName |
| - STRING
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Return |
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LCDClear |
| Clears the LCD | |
| - VOID
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Return |
Property reference
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Properties |
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VRef voltage |
| Used by the GetVoltage or GetString component macros to take an ADC reading and convert it into a Voltage. +VRef voltage x 10mV Default 500 = 5.0V | |
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VRef option |
| Defines what is used as the ADC maximum reference. ADC Range = GND to VRef Voltage. VDD - Defines the microcontrollers power supply pin as the max reference, VREF+ Pin - Dedicated pin on the microcontroller to allow for a variable reference voltage. | |
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Conversion speed |
| Clock setting to select how fast the ADC peripheral will perform an ADC conversion. The FRC setting is based on a RC time base and so will vary with temperature and pressure. Other settings are generally based on divisions of the master clock. | |
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Aquisition cycles |
| Number of micro seconds to wait for the ACD input to charge before starting the analogue sample. | |
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Bit Depth |
| Maximum number of digital bits the ADC can sample. 8 bit = ADC range 0 - 255 10 bit = ADC range 0 - 1023 12 bit = ADC range 0 - 4095 | |
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Connections |
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Channel |
| Analogue input channel - which pin is the analogue input conected to? | |
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Simulations |
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Tang Color |
| Colour of the moving part of the slider. | |
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Marker Color |
| Colour of the marker line across the slider tang. | |
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Scope Traces |
| Selects if the scope traces are automatically generated or not | |