XL-MaxSonar-EZ0 MB1200 Ultrasonic Distance Sensor SF_Arduino Shields line up the four pieces

line up the four pieces and connect all the GND and 5V pins together as shown above

and D for DRL

the bandwidth on the ACS723 Sensor Breakout width filter has been set to 20kHz to reduce noise when using at high gains

Switching adapter: yes

XL-MaxSonar-EZ0 MB1200 Ultrasonic Distance Sensor SF_Arduino Shields line up the four piecesThe XL MaxSonar EZ0 offers a wide and sensitive beam pattern for indoor use. This makes the XL MaxSonar EZ0 an excellent choice wherever wide beam detection, reliable people detection, or reliable small obstacle detection are required. The sensor is small in size, yet the high output acoustic power combined with continuously variable gain, real time background automatic calibration, real time waveform signature analysis, and real time noise rejection