Besides a microcontroller, what’s a single simple IC that could do this? There are many 555 variants out there (like the 556), would any of those achieve this effect?
Wow and Holy Cow!,
there is a ton of awesome advice here
in all of these posts and replies.
Thanks for sharing EEVBlog!
I'll bet once the OP achieves success with 555
type timers, you all have opened up an entire
universe of discovery should the OP decide to
further persue their interest in futzing around
with electronic circuitry.
Now getting back to trying to follow the OP's initial and insistent request:
Please redraw the circuit you originally shared with shared with us,
according to my prior suggestions and post the new circuit so we
are able to make sure we are on the same page.
( even better, if you do not already have it downloaded and install
. LT SPICE {or any other free SPICE version} and use that for
. schematic capture and you will be able to also simulate the
. circuit {and share those results} )
Next take a look at the 555's and 556's pin assignments
.. ( you already have a diagram for the 555 in the OP ).
.. ( hint go on your favorite search engine and search LM556 Pinout )
and construct a table as follows:
( actually, here, I'll help you out a little more by getting the table started
. just fill in the pin numbers from the 556 -- hint: since Vcc and Gnd are
. share between the 2 556 timers, just repeat the 556's Vcc and Gnd
assignments in the below table for each timer )
Function 555 556tmr1 556tmr2
------------------ ----- ---------- ----------
Ground 1
Trigger 2
Output 3
Reset 4
Control Voltage 5
Threshold 6
Discharge 7
Vcc 8
Then re-redraw the circuit using the 556 in place of the 555s
according to the above pin cross-reference map that you created.
&&& again,
share your results so we can help keep you on track,
(as well as gloat with you once you achieve success....)
. ( BTW the ultimate goal here is to help you to learn to answer your own questions
.... at which point you will start to be able to help noobier noobs on these forums
.... as well as share the clever things you come up with the rest of us )
Cheers to all!