Soap Bubble Machine

New PCB arrived and tested. The fan speed can now be controlled by turning the potentiometer. For the battery I used a JST plug to get reverse polarity protection.

I've added a potentiometer to the PCB to control the fan speed. The V1.0 board used a PWM pin, that does not support PWM. It is still possible to use one of the ISP pins (D11) which is directly beside the motor conector to use PWM control.