3D ROBOT ARM WITH ARDUINO

@Robin2 if would nicer if you said "I have no idea how to help, maybe you should wait if another humble person can help you". Instead of saying "you lost your time coming here making this question, go f*** yourself and try to get the answer by yourself cause nobody here knows how to help you".

If I go to a forum make a question I hope I can have some help instead of stupid person coming here saying "check your own pictures and find yourself the answer you are looking for". If you had spent a few minutes trying to understand what I said you will see that even a difference of few millimeters in bars sizes will not work so trial and error is a stupid approach.