5 x 555 Timers

[abuhafss]

Hi

I am working on a project which needs 5 timers.
First, please see the flow chart.
Next, the time graph for better understanding my requirement.
Finally, the proposed schematic.

I shall appreciate, valued suggestions to finalize my project.

By the way, being a hobbyist, I have limited knowledge of electronics.

Thanks.

[Simon (Webmaster)]

You might want to use the dual version of the 555, the 556. This contains 2 timers in the same IC. Might save you some space on a circuit board, just depends what fits best. No difference in the actual operation of the circuit.

You need to check the current current requirements of the relay coils are within the capabilities of the 555 / 556 outputs - you might need a transistor to drive each relay. Otherwise I can't spot any obvious problems (assuming the component value calculations are correct).

[abuhafss]

Thanks for your response.

Yes, I had that point in mind. That can be tested practically.

[Weazel]

id look at jk fip flop chips and shift regester is mi idea mite be lest chips and other simular logic cct