Hii! I came across your video randomly and ended up watching it all. Love the vibe of it. Keep up the work and hope you have a nice day! oh and I actually have a coffee shop in Vietnam too and we used the same scale that you bought at the beginning of the video, it really nice to be honest but be careful not to get water inside the timing part, that part could easily get waterlogged through time if you don't keep an eye on it when you use the scale. That's all, hope it will help you, GOOD LUCK!