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maarten-pennings / CCS811

Arduino library for the CCS811 gas sensor for monitoring indoor air quality.
MIT License
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eco2=0 ppm, etvoc=0 ppb #4

Closed JohnnyPP closed 5 years ago

JohnnyPP commented 6 years ago

Hi,

on ESP8266 I get always the same results of eco2=0 ppm and etvoc=0 ppb. The output looks like this: CCS811: eco2=0 ppm, etvoc=0 ppb, errstat=90=--vhxmrwF--Ad-ie=ERROR|OLD, raw6=10 uA, raw10=407 ADC. The raw10 varies a little bit but stays in a range between 400 and 420. What could cause this behavior?

maarten-pennings commented 5 years ago

Sorry for the late reply? Is your sketch working now? If not, could you also show the prints from the beginning of the sketch? Since the D bit is never hi in STATUS, maybe the start command failed.

maarten-pennings commented 5 years ago

Shall I close the issue?

bfaliszek commented 5 years ago

I have a very similar problem. After uploading ccs811basic.ino I get CCS811: errstat = 10 = - vhxmrwf - Ad-ie or CCS811: I2C error. I am using ESP8266 (NodeMCU) and ccs811 on a purple PCB. Sometimes after several NodeMCU reboots, the code starts working and measurements appear.

maarten-pennings commented 5 years ago

Can you show the entire output (from the beginning of the program)?

bfaliszek commented 5 years ago

I changed the wires to other ones and now it works. I guess it was just a connection problem.

maarten-pennings commented 5 years ago

Good you solved it 👍