00:00Need cheap distance sensors for robotics or Arduino projects?
00:04Tested 5 top-rated ultrasonic modules, all under $10.
00:08Best budget pick save cash, work great.
00:12First is classic HCSR04 at $3.21.
00:17Industry standard for bench tests, smart cars, beginner builds.
00:222cm to 400cm range.
00:254.9-star rating with over 4,000 sold proves reliability.
00:30Best cheap starting point.
00:33Second, waterproof JSN-SR04-TA-JSR04-M combo for $387.
00:39Sealed transducer handles rain, outdoor weather, water tank level sensing.
00:44Same HCSR04 trigger eco-logic, tough shell.
00:48Solid upgrade if moisture kills standard boards.
00:52Third, wide-voltage HCSR04 variant at $385.
00:56Takes 3 to 5.5 volts directly.
01:00Perfect for 3.3-volt ESP32 or standard 5-volt Arduino without logic-level shifters.
01:065-star rating.
01:08Clean integration, zero extra parts needed.
01:12Fourth, AJSR04-M unit with long 2.5-meter probe cable for $338.
01:18Cable allows mounting probe inside tank or bumper while main board stays dry inside enclosure.
01:23Reads 20 to 450 cm accurately.
01:27Great reach for cheap.
01:30Fifth, Bear JSN-SR04-T variant at $217.
01:34Cheapest waterproof option tested.
01:37Full 5-star rating.
01:39Perfect budget sensor for outdoor automations where cost matters most.
01:43Works identical to pricier waterproof modules.
01:48Links for all sensors in description below.
01:51Like video, subscribe to channel for more hardware tests.
01:56Drops questions in comments.
01:57And if you need to let the robots be wise.
01:58Thanks for watching.
01:58Keep in mind.
01:58Keep working with Barsht3.
01:58Youforte 9.5-meter deck.
01:58The house is living gutter.
01:58Have aΠ½Π΅Ρ?
01:58Youγγ¦ μΉ΄λ.
