How do determine power requirements of salvaged motors?
August 15, 2011
Hello LMR, this is my first post so I will start with an introduction. My name is Sion and i'm from South Wales, UK. I follow the youTube posts and thats what lead me here.
I recently purchased a Sir Killalot RC toy from a local charity shop for £2. I managed to salvage a great base for my robot, 2 motors and gears, but it didn't have the remote control or battery pack.
My circuit is a simple 2 motor setup using the L293D and an Arduino. I have the Arduino powered by 9v and I have also connected the L293D to 9v. The whole circuit is ground looped. I'm confident the wiring is correct as my sketch is running as expected, but with each iteration of the sketch the motors get slower and slower as if the batteries are dying(despite being new).
How can I determine the power consumption of the motors I have salvaged? There was no battery to give me any indication(however the compartment was quite large) and I dont see any markings on the motors.
Any help greatly appreciated.