Hello Guys !
So Ive been planning on building a fancy clock with a load of LEDs and a load of shift registers.
Before you instantly reply with something like ~Just use an adruino or raspberry pi~ ...
I want to build it this way because I enjoy building things that came from my own mind and well , I just had the idea to build a clock that way so thats how Ill go .
Basic Plan:
So for the time Ill be using this neat little thing right here :
-
http://www.hackersbench.com/Projects/1Hz/ -
Since this all is a "prototype" I will use multiple breadboards for mounting.
Now I am looking for the right IC shift register to use.
I want to pack some shift Registers together so one row adds up to about 60 Bits - ill place a flip flop at the begining that will turn on when the 60th' bit is high and turn off when the first bit is high.
That way I should be getting a High that moves from the first bit to the 60'th -thus visualising the seconds.
Then Ill place the "clock" input of another shift register row ( also 60 bit , yes for the mins) on the 60th bit of the "seconds shift register row".
So if my thoughts are right I should now have a clock that is capable of working with seconds and mins - if I do the same fun but with only 24 bits I should also be able to work with hours .
Please tell me if I have some Kind of flaw in my logic there.
After this is set up I want to display the time with LEDs in a circle formation - which is why I didnt use a Binary to 7 seg coder.
To drive the LEDs I am planning on using a darlington transistor IC . Any reccomendations which one might fit? LEDs should be visible in Daylight
So if everything you read so far seems fine to you - thats great - but you might ask yourself " how do I set the clock , do I have to plug it in at midnight if i want to use it?"
Well for that i thought of a Little Switch that cuts off the Timing circruit from the shift Registers , and adding 3 Buttons - one for seconds one for mins and one for hours.
those Switches will send a high to the clock input of the Chosen shift register row resulting in adding one up.
Thanks for reading and for your help !
Here are the main questions if you have forgotten them :
x: which shift Arrays for breadboard
x: what darlington Array for blue LEDs at daytime ( THEY WILL BE HIDDEN BEHIND SCRATCHED UP PLEXY GLASS!)
x: will it work ?