ARDUINO AJ-SR04M Distance Measuring Transducer Sensor User Manual
- June 15, 2024
- ARDUINO
Table of Contents
ARDUINO AJ-SR04M Distance Measuring Transducer Sensor User Manual
Operating Mode:
After connecting the ultrasonic ranging module with 3-5.5V power supply, the
module has five working modes:
Mode 1: Common Pulse Width Square Wave (Minimum Power Consumption 2.5mA)
Mode 2: Low Power Pulse Width Square Wave (Minimum Power Consumption
40uA)
Mode 3: Automatic Serial Port (Minimum Power Consumption 2.5mA)
Mode 4: Serial Port Trigger (Minimum Power Consumption 20uA)
Mode 5: ASCII Code output (Minimum Power Consumption 20uA)
Module Output Format Description:
-
The method of switching mode. In case of power failure, the mode can be changed by changing the resistance value of R19 above the module.
-
Patterns Selection Method:
- Compatible market HR-04 trigger mode
- Low Power Mode
- Automatic Serial Port Mode
- Low Power Serial Port Mode
- Computer Printing Mode
Pattern| Mode Corresponds| Stand by Current| Low Power
Current| Blind Area| The Furthest Distance
---|---|---|---|---|---
Compatible market HR-04trigger mode| Open circuit| <2mA| | 20cm| 8m
Low Power mode| 3001C0| <2mA| <40pA| 20cm| 8m
Automatic Serial Port Mode| 120K12| <2mA| | 20cm| 8m
Low Power Serial Port Mode| 47K12| <2mA| <20pA| 20cm| 8m
Computer Printing Mode| oK| <2mA| <20pA| 20cm| 8m
Module Startup Flow Chart:
Mode 1: Standby current < 2.0mA, working current 30mA
Mode 2: Low power consumption<40uA,working current 30mA
Mode 3:Serial port automatic mode, average current 5mA
Mode 4: Serial low power mode, low power<20uA,standby 2mA
Mode 5: Serial low power mode, standby < 20uA, working 30mA
Size Chart:
Size of Strip Line
Ultrasound Transducer
Strip control
motherboard size
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