arduino count down timer circuit

dosto yeh project mei dikhya gaya hei ki koi v device jeise rocket lounch hua yah led bulb hua aur bahut kuch electronic device ko ek time ke bad on kar sakte ho
aur yeh project bahut hi asan sa project hei
jiske liye ek seven segment display ko use kiya hei meine
jo ki vedio mei details diya hua hei
code link;-docs.google.co...
#arduinoproject
#sevensegmentdisplay
#electronicproject
#timercountdown