I purchased an “ultimate robot kit” and have been experimenting with different projects. I noticed that my 25mm and 37mm motors won’t operate at anything under the value “100” (on the 0-255 scale). If I try to rotate them slowly at value “50” they just whine. This is while using the provided 6 AA battery holder and a fresh set of Duracells.
Are my motors faulty? Or is it a known limitation of the DC motors? I’m considering upgrading the motors but I’d like to find some that I don’t have to solder connectors to.