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Need vericifacation that this will work

ForceMaster

Jan 11, 2012
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Hi.

I need to know if this will work.
i know it's proberly difficult to do, but give it a try,.
Feel free to ask.

It's for keeping track of the Rain, from each day.
and seven days back.
 

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Raven Luni

Oct 15, 2011
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Wow thats a very complicated setup. For something as simple as keeping track of rain over 7 days, perhaps a more elegant solution like this would help:

rain.jpg
 

Raven Luni

Oct 15, 2011
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Sorry that wasnt too helpful and hopefully not offensive (I've been told my attempts at humour arent too welcome here)
 

BobK

Jan 5, 2010
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Does the word "microcontroller" have any meaning to you?

Bob
 

ForceMaster

Jan 11, 2012
19
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Jan 11, 2012
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Does the word "microcontroller" have any meaning to you?

Bob

Have heard abouth it, but do not know how,
what do i need ??

i have allready most of the components, so if it will work, it will be fine.


Rgds
ForceMaster
 
Last edited:

BobK

Jan 5, 2010
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All of your logic could be easily replaced by a single microcontroller chip, but if you are not familiar with them it is a steep learning curve, particularly if you have no programming experience.

Bob
 

ForceMaster

Jan 11, 2012
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All of your logic could be easily replaced by a single microcontroller chip, but if you are not familiar with them it is a steep learning curve, particularly if you have no programming experience.

Bob

I Know it can be done by a microcontroller, i could also connect a PC. but why should i ;)

That think that worries me is the part with 7475 latches will work, or perhaps the change is to fast , first doesent become "low" before the next is "high", so i will but in a 4017 more, and leth it skip every second count at midnigt, so it will get "low" before next get "high".
 

BobK

Jan 5, 2010
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I Know it can be done by a microcontroller, i could also connect a PC. but why should i ;)
Cost. Complexity. Flexibility. Time. Power. Size.

A microcontroller, in the hands of someone who knows what he is doing, would win on all of the above.

Bob
 
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ForceMaster

Jan 11, 2012
19
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Jan 11, 2012
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Cost. Complexity. Flexibility. Time. Power. Size.

A microcontroller, in the hands of someone who knows what he is doing, would win on all of the above.

Bob

That's not the issue,

Will my project work or will it not.

Rgds
 

BobK

Jan 5, 2010
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It would be quite a job to look at your very complex design and determine whether it will work or not. Why don't you describe in words what you are trying to do, then maybe someone can help.

Bob
 

ForceMaster

Jan 11, 2012
19
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Jan 11, 2012
Messages
19
Ok.

the hole process is for count the rain on days.
picture 1, it simpley the readouts, 4 digits display, cause i also need the time.
use of pull-down resistor, cause someone say i need them.

Picture 2
is the total counter since reset. could be a month.
output from 7490 i leading to 4081 gates, so that it can be selected.
use of pull-up resistor casue need to be sure that 7490 i really high,

Picture 3.
is on the left the daily counter, at midnight the "data" is shiftet 1 day to right.
until day -7 by 7475 latch.

Pictur 4
is contunie of latch and the control to move the "data" every day.
here i think i will need a 4017 more, cause i think 4017 will go high on next output before the output before will go low.

Picture 5
is the clock, so that the data can be moved at midnight,
and pull-up resistor and selectable by 4081 gates,

Picture 6
upper left, 1 hz generator, also with 128 hz output, to use for shifting data at midnight,
left low is a control, so if select button is pulled it starts a timer, so it will switch back after 9 seconds,
Right side is for start nd stop clock, and adjust it.

Picture 7 - 10
selecting from day -1 to day -7 and total rain, and clock.

Picture 11
just the switch. buttons.


Hope that will help you,

OR

Can someone explaine how and so, it can be in one microcontroller,
readout on 2*16 LCD display.
rain from 7 days, time and rain total.
Program code could be usefull.

RGDS
ForceMaster
 

ForceMaster

Jan 11, 2012
19
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Jan 11, 2012
Messages
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Lots of help to get in here. hu.

Just comment that it could be done another way, by no one can answer what was asking.
 
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