Maxbotix XL-MaxSonar-WRMA1 Weather-Resistant Ultrasonic Rangefinder

Maxbotix XL-MaxSonar-WRMA1 Weather-Resistant Ultrasonic Rangefinder — MaxBotix — 1137

Weatherproof ultrasonic rangefinder that reports distance to the largest acoustic return, ignoring smaller targets. Suited for outdoor target detection, bin or tank level sensing.

Pinout

Logical pinout · physical placement not verified
MAXBOTIX XL-MAXSONAR-WPin 1TXPin 2V+ANGNDRX
  • Pin 11

    Mode select. Leave open/high for asynchronous serial output on TX; hold low for pulse output on TX suitable for low-noise chaining.

    Type · Control
  • Pin 22

    For MB7092 this pin outputs the real-time always-active analog voltage envelope of the acoustic waveform.

    Type · Signal
  • AN3

    Analog range-voltage output, scaling factor (Vcc/1024) per cm; output corresponds to the most recent range data.

    Type · AnalogVoltage · Output scale depends on supply: about 4.9 mV/cm at 5 V, about 3.2 mV/cm at 3.3 V; hardware-limited range about 700 cm at 5 V or 600 cm at 3.3 V.
  • RX4

    Ranging control input. Internally pulled high; left unconnected or high makes the sensor continually measure, held low stops ranging, high for 20 us or more commands a range reading.

    Type · UARTVoltage · 0-Vcc logic per MaxBotix datasheet context.
  • TX5

    When Pin 1 is open/high, outputs ASCII serial range data at 9600 baud, 8N1, as R plus centimetre digits and carriage return; when Pin 1 is low, outputs a single pulse.

    Type · UARTVoltage · 0-Vcc serial levels, described by MaxBotix as RS232-format data but not RS232 voltage levels.
  • V+

    Positive DC supply input for the ultrasonic sensor.

    Type · PowerVoltage · Operates on 3 V to 5.5 V; datasheet gives typical average current 2.1 mA at 3.3 V and 3.4 mA at 5 V, with higher peak transmit current.
  • GND

    Return for the DC power supply; MaxBotix notes GND and V+ should be ripple and noise free for best operation.

    Type · Ground

Start wiring

I2C · SPI · Single data line · 3.3 – 5 V · Breakout

Pimoroni describes its VL53L1X breakout as a compact time-of-flight distance sensor with I²C address 0x29, 4–400 cm range, 27° field of v…

Module pins: V+, GND, Pin 2, RX, TX. Schematik maps them to your board in the app.

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