I have a Siemens Euroset 5005 phone at work. Unfortunatly the lowest setting for volume is still too high. So I was wondering, it would be a nice project to take it apart and add an LED that lights up / blinks when someone calls.
How was i thinking of doing this?
take hte phone apart, check where the speaker is. Solder a wire to the speaker (+) and send it to a transistor.
|----- 3v coin battery ----| | | speaker----- (Transistor) | | | |--------- LED ------------|
When the phone rings, sends a small pulse to the transistor, and the transistor connects the LED to the 3v battery.
Since I'm not a big expert with this, before drilling a hole in the phone i'd like to hear some opinions =)
I might need a tip on which transistor to choose. Maybe a 2n2222? Should be pretty standard.
If this works, maybe i'll add an LED and a small vibrating motor. Just in case i dont see the light, ill feel the phone vibrating. ;)