Trying to design a compact down-counter for a toy airsoft bb gun. Think of the movie "Aliens". A small, battery-powered, LED or illuminated LCD screen that shows how much "ammo" is left in magazine. Display/counter will count down from 2 or 3 digits down to zero.
Idea A:
Scaled-down IR "people-counter." 6mm plastic bbs whizz past a sensor located at end of barrel at aprox 10/second. Sensor sends signal to down-count display.
Idea B:
Magazine "X" holds 90 bbs. Sensor in magazine "senses" location of the internal spring-loaded push-plate that pushes bbs from bottom of magazine. Fully loaded magazine reads "90" on display. As bbs are used up, display reads accordingly. External contacts on magazine mate with internal contacts in gun. Data sent to micro processor & display screen.
ANY input will be greatly appreciated!
Thanks, Vader
Idea A:
Scaled-down IR "people-counter." 6mm plastic bbs whizz past a sensor located at end of barrel at aprox 10/second. Sensor sends signal to down-count display.
Idea B:
Magazine "X" holds 90 bbs. Sensor in magazine "senses" location of the internal spring-loaded push-plate that pushes bbs from bottom of magazine. Fully loaded magazine reads "90" on display. As bbs are used up, display reads accordingly. External contacts on magazine mate with internal contacts in gun. Data sent to micro processor & display screen.
ANY input will be greatly appreciated!
Thanks, Vader