CJMCU-8128 CCS811+HDC1080(SI7021)+BMP280
Carbon monoxide CO VOCs temperature and humidity gas pressure altitude pressure sensor
Three-in-one sensor
Module size: 18mm*21mm
Power supply: 3.3V
CJMCU-8128 is a gas sensor system-on-chip (SSoC) + temperature and humidity sensor that uses low-power sensing technology to detect indoor volatile organic compounds (VOCs).
In the schematic diagram of the CCS811 onboard CJMCU8118, we can see that this is not a simple sensor. It also integrates an MCU inside, which makes this sensor have on-board processing capabilities. It can be provided without host intervention. Effective carbon dioxide level or total volatile organic compound (TVOC) index. At the same time, with the use of separate gas sensors and MCU solutions, CCS811 can save equipment bill of materials costs and up to 60% of the board area.
HDC1080 Low-power, high-precision digital humidity sensor with temperature sensor
DC1080 is a digital humidity sensor with integrated temperature sensor, which can provide excellent measurement accuracy with ultra-low power consumption. HDC1080 supports a wider operating power supply voltage range, and compared to competing solutions, the device can provide low cost and low power consumption advantages for various common applications. The humidity and temperature sensors are factory calibrated.
Relative humidity accuracy is ±2% (typical value)
Temperature accuracy is ±0.2°C (typical value)
Excellent stability under high humidity
14-bit measurement resolution
Sleep mode current is 100nA
BMP280 is an absolute barometric pressure sensor designed for mobile applications. The sensor module is housed in a very compact package. Its small size and low power consumption allow the realization of devices such as battery-powered mobile phones, GPS modules or watches.
BMP280 is based on 's proven piezoresistive pressure sensor technology with high accuracy, linearity, long-term stability and high robustness electromagnetic compatibility. Many equipment operation options provide the highest flexibility, optimized power consumption of the device, resolution and filter performance. In the case of a test example used, the default settings are for developers to make the design as simple as possible.
application
GPS navigation enhancements (e.g. time advance improvement, dead reckoning, slope detection)
Indoor navigation (ground detection, elevator detection)
Outdoor navigation, leisure and sports applications
Weather forecast
Applications in health care (eg spirometry)
Vertical speed indication (such as rising or sinking speed)
