Review on ๐ Enhance Distance Sensing with Excelity 3pcs Ultrasonic Module HC-SR04 and Mounting Bracket by Robert Berio
Inexpensive, accurate and so far so good.
I think I bought them at a bargain price. Make sure you connect them to 5v and use 330 ohm resistors for the echo, although most manuals claim they run on 3.3v. They work perfectly and are very accurate on the automatic door sliders for my house and show tight bodies on both sides of the door. It's funny how educational modules and sensors can do so much for so long.
- Expensive
New products
Comments (0)
Top products in ๐น Motion Detectors
Driveway Alarm Wireless Motion Detector Alarm 600 Feet Long Range Outdoor Weather Resistant Motion Sensor & Detector Security Alert System Monitor Protect Outside/Inside Property
36 Review
๐ Htzsafe Solar Driveway Alarm System: 1/4 Mile Long Transmission Range - Solar Powered, Weatherproof Motion Sensor & Detector DIY Security Alert System
10 Review
Optimized 433MHz Home Wireless PIR Infrared Motion Detector Sensor for Alarm System by KERUI
12 Review
YoLink Smart Outdoor Motion Detector: 1/4 Mile Range LoRa-Powered Wireless Sensor for Driveway Alert, Trespassing Alarm, Remote Monitoring & Alerts - Alexa, IFTTT Compatible. Hub Required!
11 Review
Another interesting products
Fitbit Versa 3 Smartwatch Replacement Band: TOYOUTHS Elastic Nylon Fabric Strap For Women & Men
50 Review
Effortlessly Navigate Your Laptop Or Desktop With The Perixx PERIPAD-501 Wired USB Touchpad
27 Review
๐ TalentCell PB240A1 | 24V Lithium Ion Battery with 22400mAh Capacity | Rechargeable Power Pack for LED Light Strip, CCTV Camera, Smartphone & More
26 Review
12 Months Warranty HP ProBook 440 G2 450 G2 TPN Q139-Q143 Battery Replacement - VI04 756743-001, 756745-001, 756479-421 HSTNN-DB6K HSTNN-LB6K
38 Review