Maxbotix XL-MaxSonar-WRMA1 Weather-Resistant Ultrasonic Rangefinder
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
- 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
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| Pin 1 | 1 | Control | Mode select. Leave open/high for asynchronous serial output on TX; hold low for pulse output on TX suitable for low-noise chaining. | |
| Pin 2 | 2 | Signal | For MB7092 this pin outputs the real-time always-active analog voltage envelope of the acoustic waveform. | |
| AN | 3 | Analog | Analog range-voltage output, scaling factor (Vcc/1024) per cm; output corresponds to the most recent range data. | 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. |
| RX | 4 | UART | 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. | 0-Vcc logic per MaxBotix datasheet context. |
| TX | 5 | UART | 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. | 0-Vcc serial levels, described by MaxBotix as RS232-format data but not RS232 voltage levels. |
| V+ | Power | Positive DC supply input for the ultrasonic sensor. | 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 | Ground | Return for the DC power supply; MaxBotix notes GND and V+ should be ripple and noise free for best operation. |
Pin details
7 connections- 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.
Control - Pin 22
For MB7092 this pin outputs the real-time always-active analog voltage envelope of the acoustic waveform.
Signal - AN3
Analog range-voltage output, scaling factor (Vcc/1024) per cm; output corresponds to the most recent range data.
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.
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.
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.
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.
Ground
Start wiring
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