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Helo guys, I need urgent help in this issue, i am trying to use controller's usb port to communicate with computer but usbb stops communicating after sending one byte. I am attaching a code in this thread, please help me. it is an examples project supposed to loop back but it is not doing it...
I need two sources one is 5v for microcontroller and other is 6v for relays, I am using using battery of 12v. I have to two ic's 7805 and 7806 to regulate voltage.
My question is can i use them in parallel?
I am using this circuit theoretically it should work but on proteus its giving some issue. even if i dont give anything on gate of mosfet still current flows through it.
Please check if there is any mistake in it. I have used two batteries to check result.
i used the resistor of 470 ohms as suggested by you but relay was changing contacts slowly. i mean slow sound was coming then i changed it to 330 and it was working like a proper switch.
PIC output current cant exceed 20mA right?
I have not used resistor in pic but practically i was using 10k resistor and relay was not working. Datasheet i dont understand it properly thats y i have asked.
yes you aare right and its works but with 350 ohm resistor like a proper switch. I am worried that 350ohms resistor means 12mA current to transistors base. Dont you think it will destroy transistor?
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I will check this out. Thanks
I am not using led as a load. I am using fan inplace of led and yes you are right its sensor not 17 volts, can u tell me the value of resistor meant for bjt
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17 volts in Temperature sensor.
What should be the value of resistor used with BJT?
load i am gonna drive is dc fan.
No its is not 17 volts. i am giving five volts this 17 is temperature sensor's value. Yeah i know for bjt we need resistor. but what should be the value of that resistor for bc547?
I Dont have pcb
hello guys!!
I urgently need your help. I am working on relay interfacing with PIC microcontroller. I am attaching a pic of the circuit i am using. CHECK my circuit and help me. My circuit worked properly one and now its not working. i think transistor is not switching. I am using BC547 AND...
I am using relay with flyback diode across the coil to control spikes when relay turns off, relay is controlled by microcontroller depending upon the temperature limit i set and i am using bjt for switching.
Lets come to the problem I am using DC battery to power microcontroller too by...
i am keeping voltage below 13.6 using charge controller. i hope 13.6 will be fine with 12 load bcoz fully charged battery has around 14v and 12 v loads work fine with it.
I am confused how to charge battery from solar panel and supply load at the same time. let me tell you my problem. I am using using 80w solar panel with the maximum current 5A approximately. I have charge controller which is supplying 12 volts to battery and load of 1A is connected across...
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