Keyestudio ccs811

[davideonesti]

https://wiki.keyestudio.com/KS0457_keyestudio_CCS811_Carbon_Dioxide_Air_Quality_Sensor
Buongiorno a tutti;
Avrei bisogno di un aiuto, ho acquistato questo sensore per misurare la qualità dell’ aria.
Dato che nel progetto che sto facendo necessito di 2 sensori ho di conseguenza bisogno di cambiare L indirizzo di uno dei due; qualcuno sa dirmi se è possibile cambiarlo e come?
Grazie in anticipo
Goodmorning everyone; I need help, I purchased this sensor to measure air quality. Since in the project I'm doing I need 2 sensors, I therefore need to change the address of one of the two; can anyone tell me if it is possible to change it and how? Thanks in advance

[TomGeorge]

Hi, @davideonesti
Welcome to the forum.

Please read the post at the start of any forum , entitled "How to use this Forum".

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

From what I can see it doesn't seem you can change the address.
However there are other ways of using two I2C devices with the same address together.

Google

arduino 2 i2c devices with same address

Tom..

[TomGeorge]

Hi,
Here is a solution I found to work and the url for it is in the image.

Tom....

[davideonesti]

sorry but I can't find the page and I should see the associated program

[TomGeorge]

Hi,
That link is over tow years old so mat have expired.

Try this link to another forum thread, I have even supplied a sample of my code?

Multiple I2C devices at same address ....

Hi, I have had this problem and found this solution with works very well. It uses diode switching of the SCL (clock) line. [I2CDual.jpg] This is the code I was using on two VCNL4010 distance sensors. #include <Wire.h> #include "Adafruit_VCNL4010.h" Adafruit_VCNL4010 vcnl; int detectRightPin = 8; int detectLeftPin = 9; bool Select = true; void setup() {  Serial.begin(115200);  Serial.println("========================VCNL4010TEST_TGIMD_1=====================");  Serial.println("=======…

Tom...

[TomGeorge]

Hi,
This is the link cited in the circuit.

Multiple I2C devices with the same address

Tom...

[davideonesti]

can I read the values ​​of the 2 sensors at the same time in this way?Because my aim is to monitor two rooms and see both values ​​on the LCD display at the same time

[TomGeorge]

Hi,
Yes you can, you read them one after the other as if they had different addresses.

It just there is a couple of more lines of code involved but that won't change the appearance of simultaneous readings.

Tom...