Description The M5Stack Laser RX is a compact laser receiver unit for building line-of-sight laser communication links with M5Stack controllers. Unit Laser RX receives a laser signal through its internal laser transistor and is designed to pair with the LASER.TX transmitter for short-range free-space optical communication experiments. Laser communication uses the atmosphere as the transmission medium, while the operating idea is similar to an optical fiber link. Because this receiver does not require radio broadcast rights or buried cable, it is useful for educational demonstrations, prototype communication links, and controlled projects where a visible line of sight can be maintained. With a 140KHz to 205KHz receive-frequency range, a Grove interface, LEGO-compatible mounting holes, and Arduino/UIFlow development support, the M5Stack Laser RX gives developers a small laser receiver unit for learning, testing, and building optical communication projects. Features Laser reception: receives laser signals for line-of-sight optical communication projects. Designed for LASER.TX: pairs with the M5Stack LASER.TX emitter unit to create a transmitter and receiver setup. Compact Unit form factor: the receiver is small and easy to mount in prototypes. Grove connection: uses the HY2.0-4P Grove interface for simple connection to compatible M5Stack controllers. Mounting support: includes 2 x LEGO-compatible holes for fixture and project installation. Development support: supports Arduino and UIFlow development workflows, including Blockly and Python. Specifications Receive Frequency 140KHz ~ 205KHz Product Size 32.0 x 24.0 x 8.0mm Product Weight 3.7g Package Size 138.0 x 93.0 x 9.0mm Gross Weight 9.3g Applications Space laser communication demonstrations Free-space optical communication experiments Education projects that explain transmitter and receiver principles Line-of-sight optical signal testing with M5Stack controllers Prototype links using the M5Stack Laser RX and LASER.TX pair Product List 1 Unit Laser RX 1 HY2.0-4P Grove cable (20cm) Other Content PinMap Interface HY2.0-4P, PORT.B Black GND Red 5V Yellow NC White DOUT The M5Stack Laser RX requires line-of-sight alignment with the laser transmitter. It is intended for controlled laser communication experiments and should be installed so the receiver can clearly face the beam path. Resources M5Stack Unit Laser RX documentation Unit Laser RX schematic PDF Unit Laser RX dimension diagram PDF Arduino example UIFlow1 docs UIFlow2 docs EasyLoader test example FAQ What does the M5Stack Laser RX do? It works as a laser receiver unit for line-of-sight optical communication projects. What transmitter should it be paired with? The official information lists it as pairing with the LASER.TX emitter unit. What receive-frequency range does Unit Laser RX support? The official specification lists a receive-frequency range of 140KHz to 205KHz. Which development platforms are supported? The M5Stack Laser RX supports Arduino and UIFlow development, including Blockly and Python workflows. What is included in the package? The package includes 1 x Unit Laser RX and 1 x HY2.0-4P Grove cable (20cm).
