Miss_B_Haven
New Member
Hi,
I tried to revise Knight Rider circuit to have 32 LED's using 2 of 74HC193, NAND gate, 4-16 decoder, and Timer 555. However; I'm experiencing some unexpected results from my design. I need your opinion on how to fix my design to have correct sequence of lighting LED1 to LED32 and then LED31 to LED1 (back and forth forever).
Per attached schematic Senario_1, the outcome sequence as: LED1 lights up and increments “counter up” up to LED32. Then, LED16 lights up and “counter down” decrements down to LED1. After that, counter down loops around LED16 and LED1 forever.
In the Senario_2 schematic, the outcome sequence as: LED1 lights up and increments “counter up” up to LED32. Then, LED31 lights up and “counter down” decrements to LED17. After that, counter down loops around LED31 to LED17 forever.
Please advise. Thanks in advance.
I tried to revise Knight Rider circuit to have 32 LED's using 2 of 74HC193, NAND gate, 4-16 decoder, and Timer 555. However; I'm experiencing some unexpected results from my design. I need your opinion on how to fix my design to have correct sequence of lighting LED1 to LED32 and then LED31 to LED1 (back and forth forever).
Per attached schematic Senario_1, the outcome sequence as: LED1 lights up and increments “counter up” up to LED32. Then, LED16 lights up and “counter down” decrements down to LED1. After that, counter down loops around LED16 and LED1 forever.
In the Senario_2 schematic, the outcome sequence as: LED1 lights up and increments “counter up” up to LED32. Then, LED31 lights up and “counter down” decrements to LED17. After that, counter down loops around LED31 to LED17 forever.
Please advise. Thanks in advance.