The TCA9548A I2C Multiplexer Module is to enable to connect devices with the same I2C address (up to 8 same address I2C) hooked up to one microcontroller. The multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pin with your command. The multiplexer itself i...
In this tutorial we will learn how the I2C communication protocol works, as well as, make a practical example of Arduino I2C communication with...
Well you generally don’t but since we can connect up to 128 devices (7 bit Address system) on the same I2C line and let’s say we want to connect two different LCDs on the same I2C line, than we can’t use two PCF8574 with same addresses and we need to modify one of them. So...
Connect I2C sensor/device to Arduino (SCL, SDA,VCC, GND pins) Connect Arduino to PC via USB cable Open Arduino IDE, select the right board and port Copy the below I2C Scanner code and open with Arduino IDE // I2C address scanner program#include<Wire.h>voidsetup(){Wire.begin();Se...
I notice that the configBlock gets written to the chip every time you want to take a measurement (in the function startMeasurement). The configBlock's first byte is the device address. Is there a nice way to change the device's address t...
Once we connect the module we need to program the Arduino Board to work with the Real Time Clock. However, when it comes to programing a communication between Arduino and an I2C module the code isn’t that small and easy. Luckily, there are already several libraries for the DS3231 RTC wh...
The physical hardware of Arduino is the board itself. However, when it comes to Arduino boards, there are multiple varieties with different functionalities. Today we will be looking at ourSeeeduino V4.2, which has the same functions as one of the most popular Arduino boards – the Arduino UNO...
Connecting or daisy chaining two or more I2C devices. Multiple branch cables can be used to extend I2C busses. Connecting two devices that need to work at the same time. For example, a LED and a Relay could be connected to a Grove Shield using a single Grove Branch Cable. It would the...
Now we will go to Void Setup loop to Begin the display using display.begin in bracket SSD under scroll switch cap vcc comma 0x3c. display.begin(SSD1306_SWITCHCAPVCC, 0x3c); this 0x3c is the i2c address for your OLED display. Now if you use multiple i2c devices your i2c address would...
Posted byDP July 19, 2018 Leave a comment on How to use I2C LCD with ESP32 on Arduino IDE A how-to on using an I2C LCD display with the ESP32 using Arduino IDE from Random Nerd Tutorials: This tutorial shows how to use the I2C LCD (Liquid Crystal Display) with the ESP32 using ...