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Recent content by niranjan23

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    Speed control of DC motor using Keypad and PWM

    Yes I am using microcontroller that dont have PWM and im generating PWM using Timers...my problem is when I choose duty cycle % using keypad it doesnt stay in concditonal loop!!! Its my programming problem ...tell me if it is or not!! Thanks!!
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    Speed control of DC motor using Keypad and PWM

    Hello!! I have problem with my project Speed control of DC motor using KEYPAD and pwm. I have interfaced 4x3 Keypad and 16x2 LCD, I want to control speed of DC motor using keypad input like 25% Duty cycle 50% duty cycle etc.!!! My problem is in program ..that is I cannot stay in conditional...
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    ULN2803 Stepper motor

    Thanks to All for helping me!!! I tried bipolar motor using L293D and works!!!! Thanks again!!!1:lol::lol::grin::grin::grin::smile::smile::smile:
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    ULN2803 Stepper motor

    Is it good way to use L293D for bipolar stepper motor?? Will it work??
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    ULN2803 Stepper motor

    I did what you said ..but still not working....just tell me how to find right winding sequence of bipolar stepper motor....cause my code is working on simulation!! but not on hardware,,,,Thanks!!
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    ULN2803 Stepper motor

    Thanks for your reply... I tried unipolar motor also but didnt work....your saying unipolar motor works well!! \but its not !!!! with uln2803
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    ULN2803 Stepper motor

    Hello! I have problem with my stepper motor and ULN2803. I interfaced Bipolar stepper motor through ULN2803 to PIC18F4550, I made code to run motor Clock wise It works on Simulation but not on Hardware! Im using 12V 4 wire bipolar motor . Im using this circuit . Also I tested Unipolar motor on...
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    Cellphone wireless charging

    @FvM Thankx for reply!!! Ohk As I said Im not good in analog circuits. I did measure DC voltage using DMM Im getting 30-39V at receiver side! And about current I didnt see! So what should I do what are your suggestions on it ?? How can I increase current!!
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    Cellphone wireless charging

    Hello!! Experts I am designing a wireless charging circuit for cellphones. I designed Transmitter circuit attached below using simple BC547 and IRF540 nMOSFET using Arduino to generate square wave of 32KHz for resonance of coil. And at receiver side I used simple 7805 regulator circuit for...
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    AC current measurement using ACS712 current module and PIC16F877A

    Okay.Got it!
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    Relay stabilizer problem!!

    How good is your knowledge in electronic component?? Can You take picture of circuit board of your stabilizer(Top view) and post it here!!
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    AC current measurement using ACS712 current module and PIC16F877A

    The problem is same as previous.again different values coming!!! This is what I got from your code ACS712 AC Current Measurement Timer Method Rev1.rar. I told you before that problem is not in coding whatever you programmed...Its in Circuit designing....I need To implement Opamp Circuit for...
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    AC current measurement using ACS712 current module and PIC16F877A

    @pic.programmer..my hardware is simple as I showed in first post where I asked question about it. I think there is no problem in your coding and my coding everything is ok.....problem is in Hardware/circuit designing....you must see this. this is arduino based project take look on ACS712...
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    AC current measurement using ACS712 current module and PIC16F877A

    I getting 13.27 A constantly with and without Load.
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    AC current measurement using ACS712 current module and PIC16F877A

    Its 7507942453
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