Maxbotix Ultrasonic Rangefinder - HRLV-EZ4

The HRLV-MaxSonar-EZ sensor line is the most cost-effective solution for applications where precision range-finding, low-voltage operation, space-saving, and low cost are needed.The HRLV-MaxSonar-EZ sensor line provides high accuracy and high-resolution ultrasonic proximity…

Pin 1 BW1
Beam-width / calibration control pin from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Type · control
Pin 2 PW2
Pulse-width range output from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Type · signal
Pin 3 AN3
Analogue voltage range output from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Type · signal
Pin 4 RX4
Serial receive / control input from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Type · signalVoltage · Adafruit product page states default serial output is RS-232 logic level; TTL mode requires soldering the square jumper closed.
Pin 5 TX

Start wiring

UART · Adafruit product page states default serial output is RS-232 logic level; TTL mode requires soldering the square jumper closed. · 0V ground reference.

Verify supply voltage and logic levels before powering up.

Module pins: Pin 6 V+, Pin 7 GND, Pin 2 PW, Pin 3 AN, Pin 4 RX, Pin 5 TX. Schematik maps them to your board in the app.

Related groups

4 groups

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 35 parts

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 31 parts

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

Boards · Microcontroller boards · 24 parts

Pin	Position	Type	Function	Voltage
Pin 1 BW	1	control	Beam-width / calibration control pin from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Pin 2 PW	2	signal	Pulse-width range output from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Pin 3 AN	3	signal	Analogue voltage range output from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Pin 4 RX	4	signal	Serial receive / control input from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.	Adafruit product page states default serial output is RS-232 logic level; TTL mode requires soldering the square jumper closed.
Pin 5 TX	5	signal	Serial transmit output from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.	Adafruit product page states default serial output is RS-232 logic level; TTL mode requires soldering the square jumper closed.
Pin 6 V+	6	power	Positive supply pin from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.
Pin 7 GND	7	ground	Ground reference pin from the HRLV-MaxSonar-EZ datasheet linked by the Adafruit HRLV-EZ4 product page.	0V ground reference.

Pinout

Start wiring

Connectors

Displays

Air quality

MCUs and boards