Chrisau
New Member
Hi,
I would like to recreate the circuitry of a standard digital watch. One which simply shows the time, and also allows the user to set an alarm (single-instance or repeating). The alarm output would energize a vibration motor to make the watch vibrate.
I am currently researching trying to learn what circuits are involved in such a device and so far I have pieced together information about;
Any input is much appreciated. Thanks in advance.
I would like to recreate the circuitry of a standard digital watch. One which simply shows the time, and also allows the user to set an alarm (single-instance or repeating). The alarm output would energize a vibration motor to make the watch vibrate.
I am currently researching trying to learn what circuits are involved in such a device and so far I have pieced together information about;
- Crystal oscillators to provide the pulse signal
- Truncated ripple counters to take the pulse signal and produce a binary output
- The binary output is used to feed the seven-segment displays
- A set-reset-latch circuit is required in connection with the ripple counters to achieve a programmable (timed) output to drive the vibration motor
Any input is much appreciated. Thanks in advance.