It's not just a blob of solder.
It is connected to one of the pins of the microcontroller.
See 'the-way-how-to-use-arduino-uno-r4-minimas-love-pin' for details of how to use it.
It's not just a blob of solder.
It is connected to one of the pins of the microcontroller.
See 'the-way-how-to-use-arduino-uno-r4-minimas-love-pin' for details of how to use it.