The video below shows how to connect another Arduino to do the programming. You could also use any dedicated AVR programmer you happen to have.

The Arduino Nano RP2040 Connect board is fully compatible with the Arduino Cloud and because the Nano RP2040 Connect is a connected device, this opens up all kinds of possibilities.

Using simple components and coding, this circuit provides accurate readings, making it a useful tool for electronics enthusiasts. Discover how Arduino can be used for real-time electrical ...