Shrouk Ehab Masters Student Hamburg University of ...
The marble track was microcontroller based, there was a selection phase that select which marble would enter the track according the needed size by using the shadow reflected on LDRs it will give the command to a servo motor to refuse or accept the marble. once the marble selected it will enter the track that will elevate the marble till 1m height using a V belt mounted on 2 pulleys then it ...