I bought the 75:1 Metal Gearmotor 25Dx54L mm MP 12V with 48 CPR Encoder Item # 3242 and I want to control using a raspberry pi. I need help on how to connect the motor to the raspberry pi. Thanks for the help!
The Raspberry Pi cannot directly drive that motor; you will likely need some kind of motor driver to pair with it. If you already have a motor driver for your Raspberry Pi, can you post a link to its product page or specifications? If you do not, you might consider our Dual MC33926 Motor Driver for Raspberry Pi. The “Using the motor driver board” section of the product page details how to connect the driver and motor to the Raspberry Pi. You can find a Python library for controlling the driver from the Raspberry Pi under the “Resources” tab of the same product page.