Hi there,
couple days ago I got a project idea that I need to build a low frequency pulse counter for. The counter will only count to 9, and I want to make it very simple with just a 7 segment LED display, 4026 and possibly an LED driver circuit. My problem is however, that I want the counter to always start counting from 1 and not from zero (I want the zero to be completely ignored). Does any of you, probably more experienced electronics enthusiasts, have an idea how to make the 4026 ic count from 1 upwards, reset at 9 and ignore the zero digit?
Thank you all in advance and have a nice day.
I’m no expert in Logic ICs but, it looks like you’ll need other things than a simple 4026 to achieve that. But hopefully this video might clear some fog:
https://www.youtube.com/watch?v=dXECRzDUYgE
@ovi4 Well, you are kind of right. I did not want to bother everybody here with bigger details about my brain-foggy idea for that project. But well – I guess I should:
So the idea is to build an electronic thread dial indicator for my new metalworking lathe. The usual thread dial construcion is very handy for imperial lathes and threads, but when it comes to turning metric threads on a metric lathe (which is my case, since I live in Europe in Czech republic) it is much less elegant. That is why I want to make my TDI electronic with a nice 7 segment LED display (I have a lot of nice old HP branded displays). For counting and displaying the numbers I want to use a 4026 IC and simultaniously (and this is the part I neglected to mention) I want to use a 4017 IC to count the pulses electrically, so that I can choose at what number I want the counter to reset. The pulses will be coming once every revolution of the drive screw (I will use an IR gate sensor) and I might polish them with a 555 in monostable configuration.
My idea was to connect the output of the “0” pin from the 4017 back to the clock input of both ICs and thus make them skip the zero, but I am not sure whether or not this would work.
I am sorry for giving partial information. Now the story is complete, yet the question stays the same.
As a “proof of concept” , it is always an option to try your desired setup and perhaps experiment with it in a software simulated environment IE: “Multisim” software (as mentioned in the video). This way you’ll know well beforehand if is even worth trying. It is far easier and quicker than bread-boarding it and… “hope for the best”. A software simulation “usually” works well when it comes to logic IC circuits.
Hi there,
couple days ago I got a project idea that I need to build a low frequency pulse counter for. The counter will only count to 9, and I want to make it very simple with just a 7 segment LED display, 4026 and possibly an LED driver circuit. My problem is however, that I want the counter to always start counting from 1 and not from zero (I want the zero to be completely ignored). Does any of you, probably more experienced electronics enthusiasts, have an idea how to make the 4026 ic count from 1 upwards, reset at 9 and ignore the zero digit?Thank you all in advance and have a nice day.
I’m late in the game here – but you could have the 0 output trigger a one-shot. Use the one-shot output to bump the count up 1. Ed