The Arduino Uno R4 WIFI provides one I2C bus on the pin header, which has no pull-ups on the board. Thus, we need to connect a pull up resistor between SDA and VDD and SCL and VDD.

[Johngineer] found himself in need of an I2C sniffer, but didn’t have one available. Necessity is the mother of invention, so he put together this I2C sniffer sketch for Arduino. The arduino … ...

Arduino Uno (x1): Microcontroller board with ATmega328P, operates at 5V. Perfect for RFID-based projects and Arduino attendance tracking systems. RFID Reader MFRC522 Module (x1): 13.56MHz RFID reader ...

I will add example code for python/micropython later that shows how to control the I2C bus and the outputs. -- Nederlandse tekst -- Schakel signalen, DC of AC met een I2C bus, optisch geïsoleerd met ...

The powerful Arduino UNO R4 is the newest member of the iconic Arduino UNO family. It even comes in two versions. Let's take a look at the Minima and WiFi.

Both versions of the Uno R4 offer 32 kbytes of SRAM and 256 kbytes of flash memory. They also furnish a USB-C port, along with CAN bus, SPI, and I2C communication capabilities. In addition, each Uno ...

The Uno Rev3, is a great beginner board as it's included in many starter kits. It's also complemented with a host of online resources that even without the official Projects Book from Arduino, you ...