Thought i'd share a little project i've been working on. As many may know there is a method for using a single analog pin to control multiple buttons. There is even a library for it. Problem is the way they connect the circuit doesn't allow for the use of button combinations. [image] So you couldn…

Easy as a falling apple! When somebody tells me how something works or can be done, I try to remember how big the universum is compared to me... Good work. I will use your idea in a later project.

I had such a setup as well. Some of the LCD shields do this. The issue is: it is not really 100%, especially if your voltage varies or your resistors vary (e.g. due to temperature changes). Last summer it started to fail during some very hot days. --> I would stick to read the pins digitally. If ne…

Thanks for this :). I'll be using buttons on my rgb lamp whenever all parts come in.

Very true. Power supply instability and temperature changes can effect the readings. This is why i tried to get resistor values so that the received value on the analog pins had a good separation to them. Then you won't get any button overlaps do to the possible instability. So i suggest when using …

Made some changes to the code and incorporated an LCD. Basically the code now moves the cursor around the LCD screen. Now with the LCD connected the code worked fine. Then when i turned on the back light it became such a drain on the power that the buttons didn't work. So i went and changed the valu…

thank you so much for the diagram, I saw another wiring diagram to accomplish something similar but it was much more difficult to read, this was perfect and got multiple buttons on one analog pin going for me in minutes, thank you!

To unambiguously decode multiple, simultaneous buttons, binary weighting for the button values seems like the way to go. This can be done by connecting the buttons to an R-2R ladder network. There is a good article on this at Resistor ladder - Wikipedia . If all resistors and the reference were perf…

Hi all You may be interested in the following pages: multiple buttons in an analog input [image] PaperTecladoAnalógico. Varios pulsadores con una sola entrada analógica Descripción Al realizar proyectos con microcontroladores, tarde o temprano nos encontraremos que nos faltan entrada…

Great tutorial! Thanks for share it with us. I would like to apply this idea but only for 4 buttons. I suppose that you made multiple experiments, so may be you could propose to me what resistances to use. Any idea or proposal? Thanks!

Multiple Buttons on 1 analog pin

Forum 2005-2010 (read only) General Exhibition

system August 31, 2010, 9:09pm 9

Don't mind the nominal precision. Just buy a charge of any equal resistors.... They will be equal...

(I think this concept has been discussed three times during the last month )

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Multiple Buttons on 1 analog pin

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