情境
A pressure-sensitive LED doormat activates individual LEDs when stepped on; each cell contains a normally-open pressure switch, series resistor, and LED.
這張圖裡有什麼
看懂背後的決策。
01
Use SPST pressure switches in parallel branches to isolate each sensor zone
02
Add 330Ω current-limiting resistors to protect LEDs
03
Power from a 9V battery with common ground return
Suitable for interactive floor mats, step counters, or pressure-activated signage needing simple discrete zone detection.