Getting Started
This guide offers comprehensive material testing instructions, detailing the impact of surface characteristics on echo values and emphasizing the importance of sensor voltage and robot coordination for reliable results.
Material testing instructions
1、 Material description, common hard materials include: wooden floor, ceramic tiles, marble; common soft materials include: carpet (long-haired carpet,medium-haired carpet, short-haired carpet), sponge, etc..
2、 The unevenness and the excessively large floor gap of the hard material ground may cause the echo value of the hard material to be significantly weakened and be misjudged as a soft material. Therefore, it is not recommended to be used in complex scenes with the flatness of the ground. In order to enhance reliability, it is recommended to coordinate the detection with the movement of the sweeping robot, and use multiple detection results within a certain range to assist in the determination, which can prevent other conditions from affecting the detection..
Assembly diagram

Supply voltage
Please note when using that the sensor only supports 3.3V power supply voltage. 5V power supply may damage the sensor. Especially when using UNO R3, make sure the voltage jumper cap is connected to 3.3V.
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