Quality is top notch. However I have received a malfunctioning board. The blue led (pin 9) is dead.
I'm currently improving the code so it can achieve some greater sound effects.
Please, adeept, can you put the buzzer on pin 9 or 10 so we can use PWM ? You put it in pin 8 so we have to use a pin bridge and thus having the blue pin always on to use PWM with the buzzer.
Find my code here: github.com/malouf/Laser-Harp.

This kit took about an hour to build. It is fun to build, but I haven't found it particularly easy to play.

I have the hobby of electronics, and together with my son we have built different adeept kits, which are fantastic both for the original ideas and for the indications provided, which allow you to follow step by step in the construction. This particular project is very interesting as it teaches to use laser modules. It's very funny at the end, to be able to play simply inserting the fingers between the laser beams! The product arrived in Italy after just 4/5 days via DHL, fantastic!