The NANOV4-3V-MC (compatible with Arduino Nano) is a versatile microcontroller board designed for projects that require precise timing and reliability. Unlike traditional Arduino boards, it can operate at either 3.3 or 5 V. Equipped with a high-precision 16 MHz oscillator, this board ensures an exceptionally accurate clock frequency, making it perfect for complex applications. Its compact design makes it ideal for breadboard setups, allowing for easy integration and experimentation in educational, professional, and hobby projects. The NANOV4-3V-MC is the top choice for developers looking to explore advanced electronics in a user-friendly and accessible way. Joy-iT's Precision series features a special quartz, which reduces the timing deviation present in all Arduino designs from 0.5% to 0.002% (calculated as a deviation of 18 seconds per hour down to 0.72 seconds). Otherwise, the controller's design and construction are identical to the original Nano V3. This "MC" variant includes: 2 additional IO pins, 1 extra I2C interface, and 1 additional SPI interface. Joy-iT exclusively uses original Atmel chips.