about a sensor
helloI want to make a sensor beside the room door which can control any cell phone passes in front of it I just want that sensor can be able to change the mode of the ringer setting to put it in...
View ArticleRe: about a sensor
1. Put the mobile phone in a metal box. No signal = no ring.2. Put up a sign telling everyone to mute their phone when entering the room.
View Article
More Pages to Explore .....
