Bluetooth curtain system
how do i reduce the current from 1.2A to 0.6A without reducing the voltage which is 12V from the Ac power adapter?nagufever
Why do you want to do this ?
I think you have mixed up the operation of the LDR circuits you have been given,
and come up with a circuit that will not do what you want.
Can you explain what your LDR circuit is for?
If i add a 10k resistor to the switch does this configuration will result an active-low input. When the button is being pressed, reading of I/O pin will be in logic 0, while when the button is not pressed, reading of that I/O pin will be logic 1?iit means it will work the opposite way am i right? why u say it will damage the component if the Vcc is 5volt?
ExperimenterUK:Pin 9 of ULN2803 is connected to ground and 10 to power of relay.When controller pin at high logic transistor inside the uln turn on the relay. When controller pin at low logic, logic transistor inside the uln turn off the relay
ExperimenterUK:Pin 9 of ULN2803 is connected to ground and 10 to power of relay.When controller pin at high logic transistor inside the uln turn on the relay. When controller pin at low logic, logic transistor inside the uln turn off the relaynagufever
Why do you need a relay ?
If i add a 10k resistor to the switch does this configuration will result an active-low input. When the button is being pressed, reading of I/O pin will be in logic 0, while when the button is not pressed, reading of that I/O pin will be logic 1?iit means it will work the opposite way am i right? why u say it will damage the component if the Vcc is 5volt?
yes ur right and i say for damaging because in ur jpg file resistor was not there so i mention this
Why do you need a relay ?ExperimenterUK
becuase it is light activated circuit.when it enabled, the it will turn the dc motor forward and vice versa.nagufever
As you have an ADC converter in your PIC, the proper way is to read the LDR as an
analogue value, then use the program to control the motor.
What has a light got to do with opening or closing a curtain ?
Majoka:If i modify ur L298HN circuit like the attached file is it ok?
there seems no current/voltage in Vcc and ground.
Can u check my circuit if there is any mistake?nagufever
Just to the right of R1, Vcc is connected to ground.
That can often cause problems.
