diff --git a/Supported-Sensor-Variants.md b/Supported-Sensor-Variants.md new file mode 100644 index 0000000..3e07141 --- /dev/null +++ b/Supported-Sensor-Variants.md @@ -0,0 +1,166 @@ +## Supported Sensor Variants +### GP2Y1010AU0F Dust Sensor (analog / ADC) +Sharp's GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared +emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the +reflected light of dust in air. It is especially effective in detecting very fine particles like cigarette smoke, +and is commonly used in air purifier systems. +

+
+ Figure 10. GP2Y1010AU0F Dust Sensor +

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
PinComments
V-LEDLED Power Supply
LED-GNDLED Ground. Connect to the main circuit ground
LEDLED Control Pin. Connect to a digital output pin to toggle the IR LED
S-GNDSensor Ground. Connect to the main circuit ground
VoSensor Analog Output. Connect to an analog input (ADC) to read dust levels
VCCSupply Voltage
+ +Table 7. GP2Y1010AU0F dust sensor pin description. + +
+ +### LMV324-Based Sound Detector (analog / ADC) +The SparkFun Sound Detector is an analog sound sensing module based on an electret microphone and an +LMV324 quad operational amplifier. The module detects variations in sound pressure and provides three +independent outputs: Audio, Envelope, and Gate. For the PCB prototype, the Envelope output is used +because it provides an analog voltage proportional to the detected sound amplitude. +

+
+ Figure 11. LMV324-Based Sound Detector +

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
PinComments
AUDIORaw analog output
ENVELOPEAnalog output
GATEDigital output
VCCSupply Voltage
GNDGround
+ +Table 8. LMV324-based Sound Detector pin description. + +
+ + +### Sensirion SCD30 Sensor (I²C) +The Sensirion SCD30 is a digital environmental sensor that measures carbon dioxide (CO₂) concentration, +temperature, and relative humidity. The sensor is based on NDIR (Non-Dispersive Infrared) technology for +CO₂ measurement and includes integrated temperature and humidity sensors for environmental +compensation. It provides factory-calibrated digital measurements over an I²C interface. +

+
+ Figure 12.Sensirion SCD30 Sensor +

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
PinComments
VINSupply Voltage
GNDGround
TX/SCLModbus: Transmission line (Push/Pull with 3V level)
+I²C: Serial clock (internal 45 kΩ pull-up resistor, pulled to 3V; for higher voltages a level shifter is needed)
RX/SDAModbus: Receive line (Input must not exceed 5.5V)
+I²C: Serial data (internal 45 kΩ pull-up resistor, pulled to 3V; for higher voltages a level shifter is needed)
RDYData ready pin. High when data is ready for read-out
PWMPWM output of CO₂ concentration measurement
SELInterface select pin. Pull to VDD (do not exceed 4V; use voltage divider if VDD > 4V) for selecting Modbus. Leave floating or connect to GND for selecting I²C.
+ +Table 9. Sensirion SCD30 sensor pin description. + +
+