Hey there! I'm trying to do a very simple project where I have a DC motor run for roughly 10-12 hours a day continuously but I'm finding that after a week or two the motor will be noticeably weaker and eventually stall and then just not work anymore. I've changed out the motor twice already and they've all done the same thing.
The motor I'm using is a 6V 20RPM 7.5Kg.cm: Metal DC Geared Motor - 6V 20RPM 7.5Kg.cm -DFRobot
I have the logic on my Arduino Nano and to have a button to start/stop power to it, and then the motor is connected directly to a power source. It's connected to a chain and sprocket and it runs very smoothly the first few days of operation. Is it the load that's causing it to wear out over time? Would a different motor like a stepper be better for this application?