Hello,

There’s another different approach to this design that might be better but requires different chips.. just thinkin out loud..

Perhaps a CD4018 for input, driving a CD40192 U/D counter, that drives a CD4028?

eT

 

Not sure I understand.
The 8-input CD4078 would replace U6-2 and the diodes.
You still need the U7 AND gates.
Why do you need inverters?

You could could also replace the 2-input AND gates with 2-input NAND gates and feed there outputs into a CD4068 8-input NAND gate.
The input and output signal polarities would stay the same.

Sorry crutshow, I was referring to the same push button setup for U5 from post #55

 

Here is a partial solution using ArduBlock with Arduino. Used Arduino Nano board,
pretty cheap.

The right window you drag and drop programming visual blocks, to create functionality,
then hit upload and it generates the Arduino code in left hand window, and then programs
part on board.

Lots of fun. Now a way to see what C code looks like. The Arduino code is "mostly" C.
So you can program visually, and observing generated C in left hand window.



Note you would add to this code for an LCD and a couple of buttons so you can set time for each
battery. Or do a terminal session with a PC or UART to PC and some Python code
to yield a GUI for setting battery parameters. Or use an ESP8266 and do a HTML
net session with Arduino and PC.

Note Nano board operated by xtal, so timing very accurate, << 1%.


Regards, Dana.

 

New version nano board (not actual size) -

Regards, Dana.

 

Found error, and a bigger pic -



Regards, Dana.

 

Changed a couple of things , added comments -






Regards, Dana.

 

Changed a couple of things , added comments -

Regards, Dana.

You really are going to make me feel guilty if I don't go your route for this circuit!

 

No continue on your current path, just store in the back of your mind
the new tools now available for doing work.

I am doing this tool as its new to me and trying it out. It will not replace C and ASM,
but many tasks are simple enough to not need deep HW dive to get things done.

And PSOC still the most flexible of stuff I have posted. Ardublock is a good way
of visualizing while coding. And you can gen up simple stuff pretty fast.

Its all good.

Regards, Dana.

 

No continue on your current path, just store in the back of your mind
the new tools now available for doing work.

I am doing this tool as its new to me and trying it out. It will not replace C and ASM,
but many tasks are simple enough to not need deep HW dive to get things done.

And PSOC still the most flexible of stuff I have posted. Ardublock is a good way
of visualizing while coding. And you can gen up simple stuff pretty fast.

Its all good.


Regards, Dana.

C & PSOC it is then.

My current problem is that I know nothing about creating PCB layouts and this project really really would benefit from this. I know how lesdyxic I feel wiring even simple projects these days. Guess I am not as systematic with respect to wiring as I once thought! One section at a time, I guess, test it, then move on to the next.

 

iONic, take a look at the second post, another tool for Arduino with
some differences.

https://forum.allaboutcircuits.com/threads/flexible-pulse-sequence-generator.156863/#post-1356687


Regards, Dana.

 

iONic, take a look at the second post, another tool for Arduino with
some differences.

https://forum.allaboutcircuits.com/threads/flexible-pulse-sequence-generator.156863/#post-1356687


Regards, Dana.

Thanks for the heads-up