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[SOLVED] Programmable digital timer switch using a PIC Microcontroller

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sribangaram

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Dear please any body help I have to make Programmable digital timer switch using a PIC Microcontroller in this web site
https://embedded-lab.com/blog/wp-content/uploads/2011/01/DigitalTimer.png
It's working perfectly but this disadvantage is setting the time every time
actually I need when I have to set the time its fix permanently so how to to convert this circuit Please tell me
 

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  • DigitalTimer.png
    DigitalTimer.png
    121.5 KB · Views: 245

You whant switching time to be preprogrammed ?

---------- Post added at 00:30 ---------- Previous post was at 00:25 ----------

Project location address :

https://embedded-lab.com/blog/?p=1378

---------- Post added at 00:31 ---------- Previous post was at 00:30 ----------

This is counter not realtime clock timer.

---------- Post added at 00:33 ---------- Previous post was at 00:31 ----------

If you need realtime clock timer see this project :

Clock Controller Ver 1.1 & 2.0 (You can find my single sided PCB on that page)
**broken link removed**
 
Dear tepater if any possibly to change the circuit like that?

---------- Post added at 04:13 ---------- Previous post was at 04:11 ----------

ok how to get this
 
Dear tepater if any possibly to change the circuit like that?

---------- Post added at 04:13 ---------- Previous post was at 04:11 ----------

ok how to get this


You didnt link properly.
 
how to get counter or real time clock switch ?

---------- Post added at 04:20 ---------- Previous post was at 04:17 ----------

how much cost of this ic (AT89C2051)?
 
How do you mean how to get ?

Counter counts, and realtime clock is based on 00-24h time from real life of humans on this planet maybe somewhere else time dont exist. :cool:

---------- Post added at 00:53 ---------- Previous post was at 00:51 ----------

89C2051 is very cheap it cost about 1eur, I use DIP earlier now use only 89C2051 SMD.
 
Ok please tell me the cost of this circuit for making
**broken link removed**

---------- Post added at 04:26 ---------- Previous post was at 04:25 ----------

Ok please tell me the cost of this circuit for making
**broken link removed**
 
Cost depends from many things.

Depends from :

Price of buying parts over Internet or in localy shops.
Making PCB alone in home lab or order PCB from some PCB manufacturer.
.
.
.
 
You can make parts list and go to shop and see prices, its easiest way or just look prices over Internet.
 

I extract small good trafo from cheap chinese power supply with multiple voltage ranges.

This is first first variant, I make now in SMD this, and this is very small and compact (I didn make picture).

Batteries just keep real time clock in life, in outage of main power, led display and other parts turned off, when power is back leds turn on with correct time, and with correct state of timer switch.

I make this to one of my friend to switch thermoaccumulation oven in predetermined time range when is price of electricity much lower, usually between 23.00 and 07.00h each day.


DSCF0116.JPGDSCF0117.JPGDSCF0119.JPGPCB Display Components.jpgPCB Main Top Side.jpg
 

Dear tpetar very thanks to you for send the link I have to started this project but I am little bit confuse "7 Segment display" connection :-|
Actually I am getting the "7 segment display" common anode 10pins only but showing the diagram in like this PCB Display Components.jpg

So please tell me how to connect my "7 segment display"
 

Connect it with flat cable, you can use pc PATA cable.


Also you can try and thise fine projects :
 

Attachments

  • ! ! ! LCD ATMega8 1-channel Timer.rar
    1.9 MB · Views: 177
  • ! ! ! LCD ATMega8 5-channel Timer.rar
    1.8 MB · Views: 273
  • ! ! ! Time operated electrical appliance controlling system AT89S52.rar
    145.3 KB · Views: 123
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