Pay in 4 interest-free payments of $3.18 Learn more
Ships within 48 hours · Estimated delivery Oct 23 - Oct 28
Designed for continuous operation
The board also includes interfaces such as RS232 serial
Based on the popular NFC controller PN532 with multi interface options
supports only Raspberry Pi Zero V1
Support for battery-powered RTC
Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, Analog) Dynamic Range Designed for continuous operationWhat is an Ultrasonic Sensor? An Ultrasonicsensoris a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. Since it is known that sound travels through air at about 344 m s (1129 ft s), you can take the time for the sound wave to return and multiply it by 344 meters (or 1129 feet) to find the total round trip
US$ 10.00
US$ 1247.50
US$ 175.00
US$ 15.00
US$ 70.00
US$ 140.00
US$ 28.00
US$ 14.00
US$ 15.00