Atomic structure Chart

18.5x24.5x4 inch. Model shown number of proton, neutron & electrons present in elements on lcd screen. Model also represents electron distribution in different shells with LED bulbs. Model will have 20 elements on borads with push to on button. Preprogrammed microcontroller, powersupply 5V 5Amp, pixel led, lcd screen, push
button, ;aser cut metal sheet 1mm with powder coating