POV Propeller clock code. Please help

Projects General Guidance
1

Hi, I'm trying to make a propeller clock, which looks something like this The Propeller Clock - YouTube or like this propeller clock - YouTube. I don't really care if it's analog or digital, by this point I just want to get this done. To do this project I've made a stand alone arduino and made a circuit with 2 shift registers and 16 leds just like this one: http://arduino.cc/en/uploads/Tutorial/ShftOutExmp2_3.gif.

I'm completely new to arduino and I'm having a really hard time finding a code that can do the propeller clock. I've found some display codes but the they don't use shift registers. Can someone please help me?

2

That is called a "persistence of vision" or POV display. I'm sure if you search for Arduino POV you will find examples that include code and circuit diagrams.

3

To do this project I've made a stand alone arduino and made a circuit with 2 shift registers and 16 leds just like this one:

Note there is a mistake in this diagram. The capacitor should be placed between ground and 5V on the chip and there should be a capacitor on each chip.

4

johnwasser:
That is called a "persistence of vision" or POV display. I'm sure if you search for Arduino POV you will find examples that include code and circuit diagrams.

I know what it's called and I have searched it and couldn't find it. That's why i'm asking for help

5

Grumpy_Mike:
Note there is a mistake in this diagram. The capacitor should be placed between ground and 5V on the chip and there should be a capacitor on each chip.

Are you sure? I tested it like this and it seemed to work out fine, but i don't know if i took a big risk or something

6

Are you sure?

Well I have only had 45 years in electronics so I am just a newcomer. ( do you do irony? )

Yes it appears to have an effect by passive decoupling through the anti-static protection diodes, but it is putting a higher than rated current load on the Arduino pin.

So unless you have a better theory than "it seemed to work out fine" then don't be silly.

7

Grumpy_Mike:
Well I have only had 45 years in electronics so I am just a newcomer. ( do you do irony? )

I didn't mean to doubt your knowledge of electronics, as I have said I'm completely new to arduino and also to electronics, I just asked because I reproduced the circuit and it did what it was supposed to do, hence the "it seemed to work out fine". But now I know, thank you, i will do just that.

8

calicias:
I don't really care if it's analog or digital, by this point I just want to get this done.

Hardly seems worth doing at that rate.

calicias:
I'm completely new to arduino and I'm having a really hard time finding a code that can do the propeller clock. I've found some display codes but the they don't use shift registers. Can someone please help me?

Why must shift registers be employed?
I "googled" Arduino POV clock
and found this --