A wireless robotic locomotive doorbell surveillance camera
Perhaps the phone no longer requires 20 Hz at 48 to 90 volts AC because it doesn’t have those vintage brass bells but rather a buzzer with a piezo, but I couldn’t figure out how to get the right waveform – then the phone went missing. so… my doorbell is a number of layered moving servos activated by a joystick. There is a wireless camera attached to the top which plays back on a screen (or a computer if I go through a little unit (from GrassValley I have).
Jerky camera robot arm prototype:
Testing the servos:
Wirelessly controlling three servos with my joystick:
Here are some photos from the process: