Hey Guys,
I am making a small Arduino based project from my final year in college. I was thinking of making a coin counter. I have seen some tutorials online and it seems pretty straightforward the only issue is knowing what exact parts would be suitable for my project
I have been looking online at different tutorials but none show what exact parts are being used. This is the closest I have come to know what parts might be needed.
Would you agree these are the best way or would there be a better way around it?
12 x IR sensor fc-51;
1 x 7-segments display SMA42056;
8 x R = 220Ω.
Arduino UNO board
my final year in college
What subject are you majoring in?
What do you plan to do with twelve IR sensors?
Why only 8 resistors? what are they going to be connected to?
Pete
If you need 12 IR sensors where is the IR that they are sensing going to come from?
How about a circuit diagram showing how those components are connected together?
Steve
What do you know of electronics and circuits? I ask because you refer to tutorials as if you can't figure out what's needed.
Have you been to the Arduino Fundamentals Page with the links to knowledge about the chips/pins?
What's your major?
Thanks for the messages guys,
Here is youtube link to something similar that I would like to create:
link
To answer your questions.
What subject are you majoring in? : Software Development
What do you plan to do with twelve IR sensors? : So basically I was going to use these as a tracking mechanism for when I coin passed them? For example,
I have 5 different types of coins.
In my head, it would be something like this.
[IR SENSOR]coin1[IR SENSOR] -- the youtube video will give a better understanding
[IR SENSOR]coin2[IR SENSOR]
[IR SENSOR]coin3[IR SENSOR]
[IR SENSOR]coin4[IR SENSOR]
[IR SENSOR]coin5[IR SENSOR]
Why only 8 resistors?what are they going to be connected to?
I am not actually sure, to be honest, I am just following what was used in the different example I have seen sorry.
Thanks Pete
Hi Steve,
Good idea with the circuit diagram it might give a better understanding of what I am trying to accomplish. I will try my best to come up with something. The link in the above comment might give you an idea of what I am trying to do.
Thanks for your help
So the coin falls through the slot wide enough for it to tip into and then how do you detect that?
You might need some leds. Did you know that red leds put out a lot of near-IR? Look at one with a phone camera, white not red? With cheap CCD camera, red led looks white from all the IR. It is easier to tell if a red led is on than an IR led too. Add to that, red light leaking from the box just adds to the mystery.
So the coin falls through the slot. Will it always pass some point to set detection for? Will you reflect the light from the coin or have the coin break the light path to the sensor? And for sure you will paint the inside of the detection part flat black?
This project is well within Arduino. You might look into using a Nano if you haven't gotten an Uno. The Nano is cheaper and much smaller, it has pins that set in breadboards very well.
When I was a programmer in the 80's my EE friends would say:
How many real programmers does it take to change a lightbulb?
Can't be done! It's a hardware problem!
Since I did some tech work, I was therefore not a real programmer to them. Until they needed real code of course! Then I was.
So where do you stand on the real world parts of automation? Have you ever done tasking without an OS? Yes, you can.
Before it happens...
The denizens of the forum don’t regard Fritzing diagrams well.
Better to use a pen & paper (or spend a little time with some other tool).
Pretty colours are not part of a schematic - information is!
And to end my rant, please use tags when you come to posting snippets of softwarevfor discussion!
Cheers & good luck with the project.
DannArduino:
Why only 8 resistors?what are they going to be connected to?
I am not actually sure, to be honest, I am just following what was used in the different example I have seen sorry.
My guess is that it is one for each of the segments plus the decimal point of the 7 segment LED display.
JohnLincoln:
My guess is that it is one for each of the segments plus the decimal point of the 7 segment LED display.
Then there are all the LEDs used in the photogates. Each one of those will need a resistor as well.