The module detects DC voltage 2.5V to 30V. Without external power supply, it can work directly when connected to the measured power supply. It offers 300ms/once refresh rate and about 0.1V measure error. Apart from that, the voltage monitoring can also play a role in voltage analysis. By observing the real-time voltage, we can judge the relationship between the running state of a smart robot car and the voltage, and then to further understand the working state.
Note: the module itself will consume some power, so please turn off the power switch when stopping using your smart robot car.