I'm working on a timer to interface with a clock and music box movement.
It will be used to sense the clock (electronic in this case) chime, then pulse a timer to control a relay (1 sec) . The relay will turn on the music box movement, play one chorus of song and mechanically turn off . I'm sensing the clock chime an opto sensor connected through a mosfet. The mosfet will turn on the 555 timer. I have breadborded the attached circuit (with a led in place of the relay and a switch to represent the opto switch). It works, but I'm getting on 1.5 volts between led and ground.
can anyone help?
It will be used to sense the clock (electronic in this case) chime, then pulse a timer to control a relay (1 sec) . The relay will turn on the music box movement, play one chorus of song and mechanically turn off . I'm sensing the clock chime an opto sensor connected through a mosfet. The mosfet will turn on the 555 timer. I have breadborded the attached circuit (with a led in place of the relay and a switch to represent the opto switch). It works, but I'm getting on 1.5 volts between led and ground.
can anyone help?