Motion (PIR, ultrasonic)

SKU: AF-3942 | Brand: Adafruit

The HC-SR04 is an ultrasonic distance sensor that measures distances from approximately 2 cm to 400 cm (best results between 10–250 cm). Widely used in robotics, automation, interactive art, and motion sensing project...

SKU: LB-LS6569 | Brand: Little Bird

A DIY soldering kit that builds into a functional ultrasonic distance meter. Using an HC-SR04 ultrasonic sensor, STC89C52 microcontroller, and 3-digit 7-segment display, this kit measures distances from 5cm to 4m with...

SKU: EF-EF03085 | Brand: ElecFreaks

The HC-SR04 is a widely used ultrasonic distance sensor that provides non-contact measurement from 2 cm to 450 cm with up to 3 mm resolution. It uses a 40 kHz ultrasonic transducer pair — one transmitter and one recei...

SKU: DF-SEN0151 | Brand: DFRobot

Ultrasonic sensors emit ultrasonic pulses, and by measuring the time of ultrasonic pulse reaches the object and back to the transducer, the distance of sensor from the target object is calculated. They are widely used...

SKU: DF-SEN0152 | Brand: DFRobot

Ultrasonic sensors emit ultrasonic pulses, and by measuring the time of ultrasonic pulse reaches the object and back to the transducer, the distance of sensor from the target object is calculated. They are widely used...

SKU: DF-SEN0150 | Brand: DFRobot

Ultrasonic sensors emit ultrasonic pulses, and by measuring the time of ultrasonic pulse reaches the object and back to the transducer, the distance of sensor from the target object is calculated. They are widely used...

SKU: DF-SEN0352 | Brand: DFRobot

The DFRobot URM13 is a compact ultrasonic ranging sensor with an open single-probe design. It supports three communication methods — TRIG pulse (SR04-compatible), UART, and I2C — making it versatile for a wide range o...

SKU: AF-4019 | Brand: Adafruit

If you're like me, you've dreamed of being a dolphin - smoothly gliding through the water. Using your echo-location abilities to detect tasty fish treats. Until genetic modifications catches up with our desires,...

SKU: SS-101990004 | Brand: Seeed Studio

This  is a non-contact distance measurement module, which is also compatible with electronic brick. It’s designed for easy modular project usage with industrial performance. Features Detecting range: 3cm-4...

SKU: SF-SEN-10313 | Brand: SparkFun

The RPI-1031 is a 4-directional tilt sensor that detects orientation using internal infrared emitters and detectors. Unlike simple single-axis tilt switches, this sensor can distinguish between multiple orientations, ...

SKU: DF-SEN0164 | Brand: DFRobot

This adjustable infrared sensor features a high-sensitivity photoreflector to perform distance detection function,ranging from 3cm to 50cm. When the infrared light emitted by the emitter gets reflected on a surface...

SKU: DF-SEN0153 | Brand: DFRobot

The URM07 is an ultra-low-power UART ultrasonic distance sensor with an effective range of 20–750 cm. Operating on 3.0–5.5 V, it is directly compatible with 3.3 V and 5 V microcontrollers including Arduino and Raspber...