Charger battery with pic12f675


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  1. #1

    Default Charger battery with pic12f675

    Hello friends,
    I want to make a 4 battery charger for NiMH 2700mA using a pic12f675, the idea is that the LED stays on when the batteries are loaded and off when they have reached their full charge, which is not how to manage the entry for input analog the load is stopped upon reaching eg 6 V.

    When you connect the battery starts charging, then pin 5 Mv monitors voltage divider, where the input analog detects that the load has reached 6 V pin 7 is at logic 0 and the load is short. I plan to put a temperature sensor (thermistor), so that if it reaches 32 ° C, the battery is charged to court.

    Can you give me some idea about how to make the project.

    Thanks
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    Last edited by Leonardo; - 23rd July 2009 at 19:08.

  2. #2
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    Sounds like you pretty much have the project mapped out.
    What exactly do you need help with ?
    Dave
    Always wear safety glasses while programming.

  3. #3


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    I need to know how can I implement the code of the forum and if someone can help me.


    Quote Originally Posted by mackrackit View Post
    Sounds like you pretty much have the project mapped out.
    What exactly do you need help with ?

  4. #4
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    Ploiesti, ROMANIA
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    Something like this ?
    Main :
    ......
    goto check
    ......
    goto main


    CHECK : ; verify for voltage
    ADCIN 2, ADVAL
    VT = ADVAL * 5000 ; 5V with 3 decimals
    VT = DIV32 1023 ; / maximum A/D reading

    IF VT > 6000 THEN
    GPIO.0 = 0
    ENDIF
    RETURN

  5. #5


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    Hello Fratello,

    Exactly what is needed for the battery charger when the voltage divider delivers eg 60mV to the GP2 pin 7 is low and cut the load to the battery.

    greetings


    Quote Originally Posted by fratello View Post
    Something like this ?
    Main :
    ......
    goto check
    ......
    goto main


    CHECK : ; verify for voltage
    ADCIN 2, ADVAL
    VT = ADVAL * 5000 ; 5V with 3 decimals
    VT = DIV32 1023 ; / maximum A/D reading

    IF VT > 6000 THEN
    GPIO.0 = 0
    ENDIF
    RETURN

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