would a non-light working motion sensor be worth making? Answered
for my year nine project ( i am currently Year Eight (yes i am english, years rather than grades) ) in DT we will be making ping pong ball launchers. my idea to add a bit of uniqueness to it was to make an automated turret. i did think of making a normal light detecting one but wanted to investigate this instead. my idea is to use a 555 timer chip to create an ossilating signal braodcatsing a few metres then a sensor tuned to the same frequency. then if a body was to enter within the signal range the signal would change and the sensor could detect this change and through an arduino could fire the turret. i just wanted your opinions on weather or not it would work.