Hi this is my first post ! I have had an idea in my head for a while but not really sure how to create it . I am an electrician and do have some experience with electronics but not with designing circuits. What I need is some help to create a circuit that users can input a desired weight (in grams) . when the the set weight is reached an output is switched . I'm sure this is very simple but I don't know where to begin . Any help would be much appreciated . Thanks .