I have used Pololu products many times and they are always of very high quality and incredibly easy to use. The range of simple motor controllers offers several options for good control of brushed DC motors, this is just one of them. All of them contain many security features and have multiple control options. They can be programmed to work conditionally and output some data points to a file, but this requires decent programming skills. Higher end models have feedback control options, which can be a great advantage when designing a system. I would recommend anyone who wants to use controllers to go to Google "Pololu Simple Motor Controller" and go to the Pololu manufacturer's official website. They have very detailed descriptions and multiple guides and manuals for each product.
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