Difference between revisions of "CJMCU-811"

From RevSpace
Jump to navigation Jump to search
Line 8: Line 8:
  
 
== Introduction ==
 
== Introduction ==
I bought this breakout board from Aliexpress.
+
I bought this board from Aliexpress, it's a breakout board for [https://ams.com/ccs811 the AMS CCS-811].
 +
The CCS-811 is an ultra-low power digital gas sensor for monitoring indoor air quality.
  
The CCS-811 is an air quality sensor chip by AMS.
+
The datasheet can be found [https://ams.com/ccs811#tab/documents here].
  
Pins:
+
== Hardware ==
* VCC connect this to 3.3V (!)
+
Pins on the breakout board:
 +
* VCC this is directly connected to the IC (there is no voltage regulator on board), connect this to 3.3V  
 
* GND to ground obviously
 
* GND to ground obviously
* SCL to ESP
+
* SCL signal from I2C
* SDA
+
* SDA signal from I2C
 
* WAK this needs to be low (!) in order for the chip to be active
 
* WAK this needs to be low (!) in order for the chip to be active
 
* INT can be left unconnected
 
* INT can be left unconnected
 
* RST can be left unconnected
 
* RST can be left unconnected
* ADD can be left unconnected
+
* ADD can be left unconnected (?)
  
 
My board was apparently configured at I2C address 0x5A.
 
My board was apparently configured at I2C address 0x5A.
 +
I'm wiring it up to a Wemos D1 mini board with an ESP8266.
 +
 +
== Software ==
 +
I found two libraries:
 +
* [https://github.com/adafruit/Adafruit_CCS811 Adafruit CCS811 Library]
 +
* [https://github.com/sparkfun/SparkFun_CCS811_Arduino_Library SparkFun CCS811 Arduino Library]

Revision as of 10:37, 30 December 2018

Project CJMCU-811
Cjmcu811.jpg
Playing around with a breakout board for the CSS-811 IC
Status Initializing
Contact bertrik
Last Update 2018-12-30

Introduction

I bought this board from Aliexpress, it's a breakout board for the AMS CCS-811. The CCS-811 is an ultra-low power digital gas sensor for monitoring indoor air quality.

The datasheet can be found here.

Hardware

Pins on the breakout board:

  • 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 (?)

My board was apparently configured at I2C address 0x5A. I'm wiring it up to a Wemos D1 mini board with an ESP8266.

Software

I found two libraries: