MaxBotix MB1260 XL-MaxSonar-EZL0 Ultrasonic Sensor Module

The MB1260 provides Analog Voltage, RS232 Serial (TTL), and Pulse Width outputs simultaneously. The analog pin outputs a voltage scaled from Vcc/512 per cm. The serial TX pin outputs an ASCII 'R' followed by a four-digit range in millimeters with a carriage return. The pulse width pin outputs a pulse whose width scales with distance (147 µs per inch). You can use any one output that best suits your microcontroller (e.g., ADC for Arduino analogRead, UART for serial communication, or digital input for pulseIn).

No, the MB1260 is specifically designed for indoor use only. Its performance can be adversely affected by environmental factors like wind, rain, extreme temperatures, and direct sunlight, which cause acoustic noise and temperature-related measurement errors. For outdoor applications, consider MaxBotix's weather-resistant or IP-rated sensor models.

Connect the sensor's V+ pin to a stable 3.3V or 5V DC supply (within 3.3-5.5V range) and GND to ground. For Arduino, you can read the analog pin (0-5V) using analogRead(), or measure the pulse width on a digital pin using pulseIn(). For Raspberry Pi (3.3V logic), use the serial output via a UART GPIO pin (ensure level matching) or an external ADC for the analog output. Always ensure your power source can provide the ~3.4 mA average current draw.

The sensor's specified minimum range is 25 cm. However, it features a 'no dead zone' design where any object detected closer than 25 cm will be reported as exactly 25 cm. This prevents the sensor from returning erratic or zero readings for very close objects, making it more reliable for applications where targets may occasionally approach the transducer face.

The MB1260 performs real-time automatic calibration in the background, requiring no user intervention. It continuously monitors and adjusts for changes in supply voltage, ambient acoustic noise, and environmental humidity. This built-in firmware feature ensures stable and accurate readings over time without the need for manual recalibration, simplifying integration and long-term maintenance.