Reading about FTDI programming with a bootloader: RS-232 chips use the DTR pin to reset the chip and enter the bootloader's firmware-receptive window: The DTR signal is present on pin 20 of the 22- ...

This article is completely focused on Arduino UNO only, if you want to know about the other options you can check out our previous article on Different Types of Arduino Boards where we have compared ...

For instance, the Arduino Uno has a capacitor in between the RTS line and the reset pin. For testing with boards that do not have the integrated RTS reset circuitry, I would like to be able to simply ...

Arduino Uno R4 WiFi comes with built-in Wi-Fi and Bluetooth capabilities, along with additional pins and a new, faster processor.

The UNO R4 Minima board is of a similar design complexity as the Arduino UNO R3. To this, the UNO R4 WiFi adds an 8-by-12 LED matrix and an ESP32-S3-MINI-1 module. It also has a Qwiic-compatible I²C ...

The Arduino Nano and Uno are equipped with very similar processors (the chip that essentially serves as the brain of the board). The Nano features an ATmega328, while the Uno sports an ATmega328P.