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Power saving using time operated electrical appliance controlling system

Discussion in 'Doubts in My Projects' started by Binu, Jun 2, 2007.

  1. Binu

    Binu Administrator

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    Power Saving Using Time Operated Electrical Appliance Controlling System is a reliable circuit that takes over the task of switch on/off the electrical devices with respect to time. This project replaces the Manual Switching.
    It has an Inbuilt Real Time Clock which tracks over the Real Time. When this time equals to the programmed time, then the corresponding Relay for the device is switched ON.
    The switching time can be edited at any Time using the keypad. The Real Time Clock is displayed on four 7-segment display.
    program: View attachment time.zip
  2. HiteshDR

    HiteshDR New Member

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    this is really very nice idea sir...

    i have heard about power saver circuit, which controls the used energy without disturbing the operation of any appliance...
    is this circuit operates on same function or it is different...???
    can i get any details regarding it from you sir,....????:)

    --------------------------​
    Hitesh D Raghvani
    (i m @:: hitesh12@gmail.com)
  3. Binu

    Binu Administrator

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    Each device will have a on-time and off-time. so the kit will daily switch on the device at the on-time and switch it 0ff when the real time is same to the off time of the device.
  4. vcvaishnavi

    vcvaishnavi New Member

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    hello sir...
    the appliance is switched on when the user time and real clock time is equal....
    i want to know when will the appliance switched off... will it be done automatically....
  5. Binu

    Binu Administrator

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    You have to enter 2 timings.
    one is "on time" and the other is "off time".
  6. vcvaishnavi

    vcvaishnavi New Member

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    hi sir...
    thanks for the reply.what is the 7 segment display's part name...it is not shown clearly in the diagram...
    also can we use LCD display instead of the 7 segment display...
  7. Binu

    Binu Administrator

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    LTS542 is the part number for the 7 segment display.
    You can use LCD display but you need a lot of changes in the program.:(
  8. vcvaishnavi

    vcvaishnavi New Member

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    Hello sir,
    In the program
    What does ACC.7 or ACC in SEND_BYTE and some subroutines mean?

    What is the significance of ALARM1-14 bits initialised at the start..
  9. Binu

    Binu Administrator

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    ACC is Accumulator otherwise called as A register, and ACC.7 is the 7th bit of the Accumulator.

    ALARM1 - 14 is the temperory flags to store the device status.
  10. vcvaishnavi

    vcvaishnavi New Member

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    hi sir,

    Thanks for your reply sir.
    what is the use of the inverter 74LS04 in the project ? cant we give the required data from port 1 directly to ULN2003...?

    And also i have doubt in pin assignment in the program... sda and scl pins are assigned to P1.1 P1.0 instead of P2.1 P2.0 and relay pins are equated to port 2 instead of port 1... and also there are 6 relay pins coming out in port 1 in the diagram whereas there are 7 pins in the program...
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