Pololu Simple High-Power Motor Controller 24v12 Category_Sensors/Temperature With the addition of a

With the addition of a heat sink

It uses a capacitive humidity sensor and a thermistor to measure the surrounding air

If you want the external source to be the primary source instead of USB

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It supports wide range input voltage: 3

Pololu Simple High-Power Motor Controller 24v12 Category_Sensors/Temperature With the addition of aThe Pololu Simple High Power Motor Controller makes basic control of brushed DC motors easy, with our free Simple Motor Control Center software enabling quick configuration over USB. The controller supports four interface modes: USB, TTL serial, analog voltage, and hobby radio control (RC). This version operates from 5. 5 to 40 V and is efficient enough to deliver a continuous 12 A without a heat sink. It ships with the power capacitor and connectors