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Dobrica Pavlinušić's random unstructured stuff
CJMCU-811: Revision 6
CJMCU-811 CCS811 Carbon Monoxide CO VOCs Air Quality Digital Gas Sensor
https://revspace.nl/CJMCU-811 ^ pins VCC this is directly connected to the IC (there is no voltage regulator on board), connect this to 3.3V GND to ground obviously SCL signal from I2C SDA signal from I2C WAK this needs to be low (!) in order for the chip to be active INT can be left unconnected RST can be left unconnected ADD can be left unconnected. It has a 10k pull-down to GND, setting the I2C address to 0x5A. ^ firmware upgrade https://github.com/maarten-pennings/CCS811/tree/master/examples/ccs811flash .pre dpavlin@nuc:~/Arduino/libraries$ git clone https://github.com/maarten-pennings/CCS811 .pre Wiring for ESP8266 NodeMCU boards: VDD to 3V3, GND to GND, SDA to D2, SCL to D1, nWAKE to D3 (or GND) Serial output with sensor out of (china) bag: .pre setup: Starting CCS811 basic demo setup: ccs811 lib version: 12 setup: hardware version: 12 setup: bootloader version: 1000 setup: application version: 1100 CCS811: waiting for (new) data CCS811: waiting for (new) data CCS811: eco2=0 ppm etvoc=0 ppb CCS811: eco2=0 ppm etvoc=0 ppb CCS811: eco2=0 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb .pre ^^ upgrade serial output .pre setup: Starting CCS811 basic demo setup: ccs811 lib version: 12 setup: hardware version: 12 setup: bootloader version: 1000 setup: application version: 1100 CCS811: waiting for (new) data CCS811: waiting for (new) data CCS811: eco2=0 ppm etvoc=0 ppb CCS811: eco2=0 ppm etvoc=0 ppb CCS811: eco2=0 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb CCS811: eco2=400 ppm etvoc=0 ppb .pre |