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Connecteur

QWIIC

black for GND, red for 3.3V, blue for SDA, yellow for SCL.
style 4-pin Connecteur JST-SH avec un pas de 1 mm

Embases de circuit imprimé JST, SH, 4 pôles , 1.0mm 1 rangée, 1.0A

Code commande RS:
515-1513
Numéro d'article Distrelec:
304-01-006
Référence fabricant:
SM04B-SRSS-TB
Marque:
JST

https://www.sparkfun.com/qwiic

Wemos lolin

USB <-> I2C

SiLabs CP2112


Passerelle USB-I2C SiLabs CP2112

Arduino

#include <Arduino.h>
#include <Wire.h>

void setup(){
    Wire.begin();    
    Serial.begin(9600);
} 

void loop(){
    byte error, address;
    int nDevices;

    Serial.println("Scanning...");

    nDevices = 0;
    for(address = 8; address < 127; address++ ){
        Wire.beginTransmission(address);
        error = Wire.endTransmission();

        if (error == 0){
            Serial.print("I2C device found at address 0x");
            if (address < 16)
                Serial.print("0");
            Serial.print(address,HEX);
            Serial.println(" !");

            nDevices++;
        }
        else if (error == 4) {
            Serial.print("Unknow error at address 0x");
            if (address < 16)
                Serial.print("0");
            Serial.println(address,HEX);
        } 
    }
    if (nDevices == 0)
        Serial.println("No I2C devices found\n");
    else
        Serial.println("done\n");

    delay(5000);
}

Source Code

https://arduino-france.site/i2c-scanner/

Commande Linux

i2c-tools
sudo apt install i2c-tools

i2cdetect
i2cdetect -l


sudo i2cdetect -r -y N

N numero I2C ici 5

détection de puces I2C, TCA9535 0x20, ADS1115 0x48, PCF8563 0x51
i2cget
sudo i2cget 5 0x20 0x04


lecture dans le TCA9535 0x20, dans le registre 0x4
i2cset
sudo i2cset 5 0x20 0x02 0x01


écriture dans le TCA9535 0x20, dans le registre 0x2, les bits 0b00000001

https://www.acmesystems.it/i2c
https://www.youtube.com/watch?v=QwlqOTDAPfk

Composants

AGS10 TVOC (total volatile organic compounds)

Operating voltage 3.0±0.1 V DC

https://www.aosong.com/userfiles/files/Datasheet%20AGS10.pdf

https://github.com/gina-seth/AGS10_sensor

SHT45 Digital humidity and temperature sensor

Accuracies:
ΔRH = ±1.0 %RH
ΔT = ±0.1 °C

https://sensirion.com/media/documents/33FD6951/67EB9032/HT_DS_Datasheet_SHT4x_5.pdf

https://docs.arduino.cc/libraries/artronshop_sht45/

SGP41 Air Quality Sensor for VOC and NOx Measurements

https://sensirion.com/media/documents/5FE8673C/61E96F50/Sensirion_Gas_Sensors_Datasheet_SGP41.pdf

https://docs.arduino.cc/libraries/sensirion-i2c-sgp41/
https://github.com/Sensirion/arduino-core/

SCD4x Breaking the size barrier in optical CO2 sensing

▪ SCD40: Base accuracy, specified measurement range
400 – 2’000 ppm, compatible with WELL Building
Standard™ 1
▪ SCD41: Improved accuracy, specified measurement
range 400 – 5’000 ppm, additionally compatible with
California Title 24 2 and RESET® 3, features single-shot
operation mode
▪ SCD43: High accuracy, specified measurement range
400 – 5’000 ppm, additionally compatible with
ASHRAE Standard 62.1 4, features single-shot
operation mode

https://sensirion.com/media/documents/48C4B7FB/67FE0194/CD_DS_SCD4x_Datasheet_D1.pdf

Bosch BME680 sensor and get temperature, humidity, pressure and gas readings

Response time (𝜏0−63%) ~8 s
Accuracy tolerance ±3% r.H.

https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme680-ds001.pdf

https://docs.arduino.cc/libraries/bme680/

SPS30

Capteur de particules, 0 à 1000 µg/m3, Laser, I2C, UART, calibré, Alimentation 4,5 à 5,5 V

https://sensirion.com/products/catalog/SPS30

https://github.com/Sensirion/arduino-i2c-sps30

INA219

INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface
The INA219 senses across shunts on buses that can
vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply
Power Management current. The INA219 operates from –40°C to 125°C

https://www.ti.com/lit/ds/symlink/ina219.pdf

INA226

36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert
Operates from 2.7V to 5.5V power supply

https://www.ti.com/lit/ds/symlink/ina226.pdf

Arduino library for the INA226 power sensor.
https://github.com/RobTillaart/INA226

INA3221 High-Side Measurement

Triple-Channel, High-Side Measurement, Shunt and Bus Voltage Monitor

https://docs.arduino.cc/libraries/ina3221/
https://www.ti.com/lit/ds/symlink/ina3221.pdf

PCF8563 Real-time clock/calendar


VDD = 1.8 V to 5.5 V
400-kHz Fast I2C bus
@I2C 0x51

PCF8563

TCA9555 and TCA9535 I/O Expander 16-Bit

TCA9535 Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output and Configuration Registers,
TCA9555 is identical to the TCA9535, except for the inclusion of the internal I/O pull-up resistor


VDD 1.65 V to 5 V
400-kHz Fast I2C bus.
@I2C

TCA9535

ADS1115 Quad ADCs

16-bit, 860-SPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C


VDD 2.0 V to 5.5 V
@I2C

0x48 0b1001000 GND
0x49 0b1001001 VDD
0x48 0b1001010 SDA
0x49 0b1001011 SCL

ADS1115

LTC2635 Quad DACs

Quad 12-/10-/8-Bit I2C VOUT
DACs with 10ppm/°C Reference

VDD 2.7V to 5.5V
@I2C

0x10 0b0010000 GND
0x11 0b0010001 NC
0x12 0b0010010 VDD

LTC2635

IP5306 Battery Management System (FM5324GA)

Fully-Integrated Power Bank System-On-Chip with 2.1A charger, 2.4A discharger

@I2C 0x75
IP5306

https://done.land/components/power/powersupplies/battery/chargers/charge-discharge/ip5306/ip5306i2c/

24LC512 EEPROM 512Kbit


VDD 2.5-5.5V
400-kHz Fast I2C bus
@I2C

A2 A1 A0
0x50 0b1010000 GND GND GND
0x51 0b1010001 GND GND VCC
0x52 0b1010010 GND VCC GND
0x53 0b1010000 GND VCC VCC
0x54 0b1010100 VCC GND GND
0x55 0b1010101 VCC GND VCC
0x54 0b1010110 VCC VCC GND
0x55 0b1010111 VCC VCC VCC

24LC512

SC18IS606 I2C-bus to SPI bridge

https://github.com/maxgerhardt/SC18IS602B-arduino

https://www.nxp.com/docs/en/data-sheet/SC18IS606.pdf

PCA9515A

Dual Bidirectional I2C Bus and SMBus Repeater

https://www.ti.com/lit/ds/symlink/pca9515a.pdf

Updated by Frédéric Blanc about 17 hours ago · 68 revisions