This optical dust sensor can measure the air quality very accurately by measuring air particles or dust based on laser detection.
This sensor is supplied with the accompanying cable and USB to serial converter to connect the sensor to a computer if needed.
Product contents: Nova SDS011 sensor module, USB-UART adapter (CH340), interface cable
Nova SDS011 Characteristics:
- Accurate and Reliable: laser detection, stable, good consistency;
- Quick response: response time is less than 10 seconds when the scene changes;
- Easy integration: UART output (or IO output can be customized), fan built-in;
- High resolution: resolution of 0.3ug/m3.
Working Principle:
Using laser scattering principle:
Light scattering can be induced when particles go through the detecting area.
The scattered light is transformed into electrical signals and these signals will be amplified and processed.
The number and diameter of particles can be obtained by analysis because the signal waveform has certain relations with the particles diameter.
Nova SDS011 Technical Specs:
- Measuring output PM2.5,PM10
- Range 0.0-999.9 ug/m3
- Power supply voltage 5V
- Maximum working current 100mA
- Sleep current 2 mA
- Operating temperature range -20-50℃
- Response time 1s
- Serial data output frequency 1 time/s
- Particle diameter resolution Less than 0.3um
- Relative error 10%
- Product size 71x70x23mm
Comminucation Protocol:
Serial baud rate: 9600 8N1
Message header: AA
Order: C0
Data 1: PM2.5 low byte
Data 2: PM2.5 high byte
Data 3: PM10 low byte
Data 4: PM10 high byte
Data 5: 0(reserved)
Data 6: 0(reserved)
Checksum: checksum
Message trailer: AB
Checksum: data 1 + data 2 + ...+ data 6
PM2.5 data content: PM2.5 (ug/m3) = ((PM2.5 high byte*256 ) + PM2.5 low byte)/10
PM10 data content: PM10 (ug/m3) = ((PM10 high byte*256 ) + PM10 low byte)/10
Pin Connections:
- NC Not connected
- 1μm PM2.5: 0-999μg/m3, PWM Output
- 5V 5V DC Input
- 2.5μm PM10: 0-999 μg/m3, PWM Output
- GND Ground/min
- RXD RX UART data (3.3V)
- TXD TX UART data (3.3V)
Documents and Useful Links:
EN
