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cjmcu-8118_influxdb's Introduction

CJMCU-8118 InfluxDB

Sending measurement data(eCO2, TVOC, temperature and humidity) from CJMCU-8118(cheap chinese board with CCS811 and HDC1080) connected to ESP8266(Wemos D1, NodeMCU etc.) or ESP32 to your InfluxDB(<1.7.9) database.

Based on CCS811 library, ClosedCube_HDC1080 library and ESP8266Influxdb.

Wiring

Wemos D1 or NodeMCU 1.0:

  • VCC - 3.3V
  • GND - G
  • SCL - D1
  • SDA - D2
  • WAK - D3

ESP32:

  • VCC - 3.3V
  • GND - G
  • SCL - 19
  • SDA - 18
  • WAK - 23

CJMCU-8118 CCS811 HDC1080

cjmcu-8118_influxdb's People

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cjmcu-8118_influxdb's Issues

Library Dependencies?

I'm attempting to install this library as a ZIP file, but the Arduino 2.0.3 IDE throws:
Error: 13 INTERNAL: Library install failed: library not valid
This library's description notes that it was based on three other libraries; I've installed each of them. Are there any other dependencies I might have failed to install that would cause this error to pop up?

Recommendations to be able to get correct sensor values

Hi bfaliszek

First of all thank you very much for sharing such a valuable project with community.
I have fully reproduced your project with the same hardware set and also InfluxDB and Grafana and I have found some bugs because I was not able to get the correct sensor values using the code. Let me share how I tuned the Arduino code.

In ClosedCube_HDC1080.cpp::begin function Wire.begin(); line needs to be enabled. Otherwise none of the below code gives the correct data

  Serial.print("Manufacturer ID=0x");
  Serial.println(hdc1080.readManufacturerId(), HEX); // 0x5449 ID of Texas Instruments
  Serial.print("Device ID=0x");
  Serial.println(hdc1080.readDeviceId(), HEX); // 0x1050 ID of the device

  printSerialNumber();

I have restored the function Wire.begin(); line again and disabled SoftwareReset option,

void ClosedCube_HDC1080::begin(uint8_t address) {
	_address = address;
	Wire.begin();
	
	// https://github.com/closedcube/ClosedCube_HDC1080_Arduino/pull/8/commits/724a233c76da13d4e559262eb6eeaa5037d33f09
	// HDC1080_Registers reg;
	// reg.SoftwareReset = 1;
	// writeRegister(reg);
	// delay(100);

	setResolution(HDC1080_RESOLUTION_14BIT, HDC1080_RESOLUTION_14BIT);
}
  1. Based on TI HDC1080 reference code HDC1080 Arduino Example Code v1.0 in page http://www.ti.com/product/HDC1080
    I added some typecasts and the most important diff I have seen regarding to receive the wrong temperature value 125.0 is that what was fixing this value is to change the delay(9) to delay(20) as written in sample TI code. I am sharing the final ClosedCube_HDC1080.cpp code I have used.

ClosedCube_HDC1080.zip

Here is the the wiring
20190802_185708

Kind Regards
Arda

set_envdata210 from HDC1080 data format wrong

// Pass environmental data from ENS210 to CCS811
ccs811.set_envdata210(float(hdc1080.readTemperature()), float(hdc1080.readHumidity()));

Need to refer CCS811 env data datasheet U16 format.

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