Hi everyone.
I am currently in project where I am using these materials:
Servo Motor (MG90S)
Servo Motor (SG90)
Ultrasonic Sensor (HC-SR04)
Arduino UNO R3
Moisture Sensor x2 (using LM393)
Inductive Sensor (NPN 6-36 DC)
Capacitive Sensor (PNP 6-36 DC)
But, I am wondering that 12 DC Bare leads is enough for power supply.
If i am using the bare leads supply, what other materials i need.
Please clear my doubts.
in general:
an Arduino is NO power-supply.
Your arduino has the generouse grace to give a tiny small bit of power to 1 or 2 LEDs or some low-power sensors. but anything else needs an external powersupply in this way
The same thing applies to DC-motors, stepper-motors, LED-strips, even if you want to connect more than 5 LEDs just anything else except lowpower-sensors
What is really important is that the ground of the external power-supply is connected to ground of the arduino.
Powering the arduino with 12V is counter-productive.
The higher the input-voltage the more heat must be generated in regulating down the voltage to 5V.
And the more current you are drawing from the 5V pin the more heat is generated which will make the voltage-regulator shut-down for thermal protection.
best regards Stefan
Can I use this one???
Or could you suggest which battery is suitalbe for me??
Or can i use voltage regulator IC 7805, Electrolytic Capacitor - 1uF/50V, Capacitor Ceramic 100nF
does this material helps this
6V is too less for the jack-conector.
At the jack-connector you need a minimum voltage of 7.5V.
Again the Arduino Unos 5V is NO power-supply.
An IC 7805 is a so called linear regulator that has to dissipate the too much voltage as heat
You would need this big version of an L7805
for not overheating the voltage-regulator
But there is a much better choice a DC-DC-step-down voltage regulator
Something like this
The shop says 5A in the smaller text you can read 4A
.
.
This shop is cheeky exaggerating with advertising 5A
I use these DC-DC-step-down voltage-regulators. The 5A is the very short time peak-current (less than a second) the permanent current that will not overheat it is only 2A
If you want to know how much current you really need you should read all the datasheets.
From each component and then sum up the numbers
best regards Stefan
Can you read these numbers?
I can't. I'm not gonna speculate on what pins or components this are
I will only answer if I can clearly read it
You have to provide a picture with easy to read numbers / letters
Saying if your powersupply is sufficient depends on the current each components draws
I will not gonna take the work of searching the datasheets for you.
either you can provide the datasheets or I will not answer your question
Please If I say anything wrong
Can you view this link???
I am new to electronics. i have'nt heard anyhting about DC Step Down Bulk Module or Voltage Regulator.
All I know is this website : circuito.io
I made the circuit wiht the help of this website.
I want to demonstrate the circuit from external supply.
The batteries are too expensive that why i need dc bare leads charger to arduino.
Please suggest me the external supply needed and the materials to handle this voltage thing for me.
Thank You
No I would have to register. I will not register.
Before suggesting a power-supply the following questions must be answered:
what is the required supply-voltage needed for this component
what is the required current for your
say about the stall-current?
what does the datasheet of the
say about the stall-current?
If you want to learn the basics about electronics I recommend watching this youtue-channel
you get a profound knowledge and understanding if you watch them all.
best regards Stefan
Don't mark the questoon as solved and post PM. Continue posting here.
Try and find a 7V power supply that can handle the lot. 3A or more will be fine. A pair of Li-ion batteries (2s configuration, nominal 7.4V) will do fine as well. Allows you to work your servos a bit harder but beware, if you overload them they are likely to burn as it's a bit of an overvoltage for them.
Power the two prox sensors and your servos at 7 V.
Bring 7V to the Arduino's Vin (that's Arduino's recommendation for an Uno).
Power the other small sensors from the Arduino's 5V pin.
The voltage to the servos could be reduced with a series diode or two. With servos, the max current is only if the servo stalls, so the diode will in most cases be relatively cool. Also, with a normal silicon diode, the voltage drops as the current through it rises, so the servo sees less voltage when it's in stall, which is a good thing in this instance.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.
