Help me breadboard my circuit

[bremenfallturm]

TL;DR Summary

I have a question if the schematic-to-stripboard translation of a circuit that I am working on is correct. See below.

Hi.

I am building a project where I have a microcontroller (Attiny44A) connected to some buttons. All the buttons are connected via one ADC pin, and pressing different buttons give different voltages. I have posted topics about this circuit before. I have also successfully breadboarded it, but I now want to transfer it to a piece of stripboard.

This is the basic idea of the circuit - and I have asked a few other questions about this circuit before:

Instead of switches I am using pushbuttons.

Since I am using the Attiny84A Microcontroller, I will connect "ADC" to the ADC1 input pin. Here is my attempt at stripboarding the whole thing:

where the purple wire indicates the ADC1 input pin. Black and red are of course GND and VCC respectively (note that I abstracted away the input power source in the stripboard design - rest assured I'll connect it)
My basic question is if this is a correct stripboard translation of the schematics?
I guess I also have a bonus question question about the 100nF capacitor. I've never ever used a capacitor in a circuit and my question is if I got it right or not?

Sorry about having very little electronics experience - but thanks for your help!

 

[Averagesupernova]

TL;DR Summary: I have a question if the schematic-to-stripboard translation of a circuit that I am working on is correct. See below.

My basic question is if this is a correct stripboard translation of the schematics?

It's pointless to ask since the schematic is wrong. How do you expect the ADC pin to have anything except 0 volts on it no matter which pushbutton/switch is pressed?

 

[berkeman]

Agreed. Where did you get this schematic from? Can you upload an image of that original circuit and say what you need to do to fix your schematic? Thanks.

 

[Borek]

Apart from things already mentioned: unless you had cut the strips μC legs are connected in pairs.

 

[sophiecentaur]

How do you expect the ADC pin to have anything except 0 volts on it no matter which pushbutton/switch is pressed?

You might investigate how some diodes might solve your problem instead of connect all the outputs to ground.
You've actually got yourself a crude DAC here (once it's working).

 

[Averagesupernova]

You might investigate how some diodes might solve your problem instead of connect all the outputs to ground.
You've actually got yourself a crude DAC here (once it's working).

It's not my problem. I simply pointed out to the OP that the ADC pin will always be at zero volts. It is tied to ground. I'm pretty sure the OP knows he has a crude A/D converter, or that is the goal at least. We haven't gotten a reply from the OP so I'm not losing any sleep over it.

 

[bremenfallturm]

It's pointless to ask since the schematic is wrong. How do you expect the ADC pin to have anything except 0 volts on it no matter which pushbutton/switch is pressed?

Agreed. Where did you get this schematic from? Can you upload an image of that original circuit and say what you need to do to fix your schematic? Thanks.

the ADC pin will always be at zero volts. It is tied to ground.

Mhrm, oops. Sorry... I drew the schematics wrong - this is what I intended to show you

Where the circuit comes from:
I was inspired by the circuit below, which is presented in the book Practical Electronics For Inventors, p. 875.
The book says that the circuit diagram is from Freetronic's Arduino LCD Shield, and indeed it is, I found the circuit image here https://www.freetronics.com.au/pages/16x2-lcd-shield-quickstart-guide.

Now I was simply trying to add a small capacitor at the ADC pin to make the detection more stable. I am not using an Arduino, rather an Attiny84A.
So basically, without the capacitor, this is the circuit

I breadboarded the circuit (the title was supposed to say "Help me stripboard my circuit", not "Help me breadboard my circuit", sorry!). When I did this, I connected the capacitor as follows, if this makes any sense at all:

And this seems to work, I get different voltage level readings off that ADC pin.

 

[berkeman]

I breadboarded the circuit (the title was supposed to say "Help me stripboard my circuit", not "Help me breadboard my circuit", sorry!)

I changed your title to use the more standard term "breadboard". I've never heard the term "stripboard" before.

 

[Baluncore]

I've never heard the term "stripboard" before.

Stripboard = Veroboard
https://en.wikipedia.org/wiki/Stripboard

 

[berkeman]

Stripboard = Veroboard
https://en.wikipedia.org/wiki/Stripboard

Ah, that may be why I've never heard of it...

It is commonly also known by the name of the original product Veroboard, which is a trademark, in the UK, of British company Vero Technologies Ltd and Canadian company Pixel Print Ltd.

 

[sophiecentaur]

It's not my problem.

Sorry. I meant "to whom it may concern."