<p>➀ Arduino launches Nano R4, a Renesas RA4M1-based microcontroller board in Nano form-factor, following the Uno R4 release;</p><p>➁ Designed for compact applications, it features 3.3V/5V I2C interfaces (Qwiic/Stemma QT), battery-backed RTC, and an RGB LED, with options for castellated pins for custom boards;</p><p>➂ Includes a Connector Carrier add-on for expanded sensor interfaces (I2C, UART, analog/digital I/O) and a Micro SD slot with voltage-switching capability.</p>