HC-SR04 Ultrasonic Distance Module
—The HC-SR04 is an ultrasonic distance sensor that measures range from 2cm to 400cm by timing an echo, the standard distance sensor in hobby robotics.
Specifications
- Range 2cm to 400cm, resolution about 3mm
- Measurement angle roughly 15°
- 5V supply, trigger and echo pins
- Non-contact measurement — no wear
- Update rate up to about 20 readings per second
What you can build with the HC-SR04 Ultrasonic Distance Module
- Obstacle avoidance on robot cars
- Parking and reversing sensors
- Water tank level indication (indoor)
- Automatic bins and doors
- Presence detection for interactive displays
Compatibility
Works with Arduino, ESP32 and Raspberry Pi. The echo pin outputs 5V, so it needs a voltage divider before a 3.3V board such as an ESP32 or Pi. For outdoor or wet use, choose the JSN-SR04T waterproof version instead.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.
Availability: Sold out
The HC-SR04 is an ultrasonic distance sensor that measures range from 2cm to 400cm by timing an echo, the standard distance sensor in hobby robotics.
Specifications
- Range 2cm to 400cm, resolution about 3mm
- Measurement angle roughly 15°
- 5V supply, trigger and echo pins
- Non-contact measurement — no wear
- Update rate up to about 20 readings per second
What you can build with the HC-SR04 Ultrasonic Distance Module
- Obstacle avoidance on robot cars
- Parking and reversing sensors
- Water tank level indication (indoor)
- Automatic bins and doors
- Presence detection for interactive displays
Compatibility
Works with Arduino, ESP32 and Raspberry Pi. The echo pin outputs 5V, so it needs a voltage divider before a 3.3V board such as an ESP32 or Pi. For outdoor or wet use, choose the JSN-SR04T waterproof version instead.
Shipping
Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.