And here's the scope trace on my simulator.

If you change the scope input settings to DC, you will eliminate the droop in the signal waveforms.

 

I only have five 555 timers.

That does complicate the design.
Not sure how you would do what you need with only five 555's and transistors, unless you use the transistors to generate some additional delays..

 

May be it can be done this way using just 4 timer chips.



[edit] The block diagram is not complete. I just discovered some problems in it.

Allen

 

That does complicate the design.
Not sure how you would do what you need with only five 555's and transistors, unless you use the transistors to generate some additional delays..

Yeah it really does that's why I didn't really put much attention to your post on #9 and that was my bad because I didn't list the parts I have but here are the potential parts that might be needed for this circuit:

-555 timers(5)
-2N3904NPN (5)
-2N3906 PNP (5)
-2N7000 N-MOSFET(5)
-TP0606 P-MOSFET(5)
-1N4001 Diode(5)
For my capacitors I have the following (5 of each): 100pF, 0.1uF, 0.001uF, 0.0022uF, 0.0047uF, 0.01uF, 0.022uF, 0.047uF, 0.1uF, 0.22uF, 0.47uF, 1.0uF, 2.2uF, 4.7uF, 10uF, 47uF, 100uF, 220uF.

 

Which resistors do you have available?

 

Which resistors do you have available?

I have 5 of each

 

Unless I'm missing something, it seems to be a rather difficult thing to do with such a limited supply of parts.

 

Unless I'm missing something, it seems to be a rather difficult thing to do with such a limited supply of parts.

I also have LF356 and LM311 opamps, I was also thinking about doing a relaxation oscillator with the lf356 but it looks complicated looking at the specifications.

 

No other logic chips? If there was a parts list for the labs, in pdf format, I would recommend you posting it.

 

Yeah it really does that's why I didn't really put much attention to your post on #9 and that was my bad because I didn't list the parts I have but here are the potential parts that might be needed for this circuit:

-555 timers(5)
-2N3904NPN (5)
-2N3906 PNP (5)
-2N7000 N-MOSFET(5)
-TP0606 P-MOSFET(5)
-1N4001 Diode(5)
For my capacitors I have the following (5 of each): 100pF, 0.1uF, 0.001uF, 0.0022uF, 0.0047uF, 0.01uF, 0.022uF, 0.047uF, 0.1uF, 0.22uF, 0.47uF, 1.0uF, 2.2uF, 4.7uF, 10uF, 47uF, 100uF, 220uF.

Why not buy an extra 555 out of your own pocket and solve the problem quick. I have about 50 pc of 555 leftover from my last project. (Yes, I use 555 too ). Crutschow's circuit only needs 6 not 10 pieces.

Allen

 

Guys thank you so much for all your help! I figured it out! I only needed to use three 555 timers.

 

Guys thank you so much for all your help! I figured it out! I only needed to use three 555 timers.

So, you're not going to tell us how you did it?

 

So, you're not going to tell us how you did it?

So for the first 555 timer I set in Astable mode to be 1.5s on and 0.5s off for the LED#1, on the output I connected LED#1 to ground with a resistor to control current and I also connected another 555 timer to the output of the first 555 timer. The second 555 timer was used to control LED#3,4,5, so I set it in Astable mode to be 0.5s on and 1.5 seconds off, following having LED#3,4,5 connected to ground, but this time I didn't connect the third 555 timer to the output of the second 555 timer. Instead I grabbed the 9V connected to the first 555 timer and connected to the third 555 timer and I set the third 555 timer in astable mode once again to be 1.0s off and 1.0s on for LED#2. Thank you crutschow! Some of your ideas inspired me to do it this way.