So i just made a voltage divider circuit converting 9v battery supply to 5v and connected it to a usb port to supply 5v to my arduino uno via usb... Is it safe for my arduino to work with it?
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Im using a adafruit motor shield v1 so all my pins are being used... Do you have a work around to that?... Since i currently dont have an adapter for dc jack.. Can i just bend the pin that is in vin and gnd?...
Sorry.. Didnt see you there... Hi!
Use a 5volt cellphone charger on the USB socket to power your Arduino.
Leo..
Actually i wanted to make it portable.. So wanted to opt for something that is rechargeable or better yet battery powered. Since i making a car.
That Adafruit motor shield v1 has a jumper, to connect motor power to V-in, to power the Arduino.
If you use 7-12volt on the screw terminal, and the jumper is on, then you don't need to power the Arduino.
Leo..
9 V block batteries are for smoke detectors, not Arduinos or motorized toys.
Don't even try.
Wawa:
That Adafruit motor shield v1 has a jumper, to connect motor power to V-in, to power the Arduino.
If you use 7-12volt on the screw terminal, and the jumper is on, then you don't need to power the Arduino.
Leo..
Thats the problem... I want to power both seperately as a single power supply is causing problem to both arduino and motors.
Using a voltage divider to get to 5V is dangerous. As the current draw changes your supply voltage may sag and that won't be good. Use a regulator.
And don't use a square 9V. They can't supply enough current. Use a handful of AA or AAA.
+1
Use a 'better' 9volt battery (made with AA cells), and you won't have that problem.
Leo..