Hello!
The timesharing display with software is done without using special parts in this timer.
The terminal D2-D9 is connected with each terminal of A-G and dp.
The terminal D10-D12 is connected with each 7SEG-LED.
The luminescence pattern of LED is output to D2-D9, and either of D10-D12 is specified sequentially.
If 3-8 decoders are added, eight 7SEG-LED or less can be connected.
-juncoffee-
juncoffee 1 year ago
any multiplexing involved? you used 12 pins, minus one for the buzzer. So 11 pins to control 21 pins. Any tips on multiplexing 7-segment displays? maybe I just counted wrong. Thanks for any help you can provide. -Joe
joebro391 1 year ago
Hello!
The timesharing display with software is done without using special parts in this timer.
The terminal D2-D9 is connected with each terminal of A-G and dp.
The terminal D10-D12 is connected with each 7SEG-LED.
The luminescence pattern of LED is output to D2-D9, and either of D10-D12 is specified sequentially.
If 3-8 decoders are added, eight 7SEG-LED or less can be connected.
-juncoffee-
juncoffee 1 year ago
any multiplexing involved? you used 12 pins, minus one for the buzzer. So 11 pins to control 21 pins. Any tips on multiplexing 7-segment displays? maybe I just counted wrong. Thanks for any help you can provide. -Joe
joebro391 1 year ago