HC-SR04 Ultrasonic Distance Measuring Sensor
HC-SR04 Ultrasonic Distance Measuring Sensor is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Delivery Options
We offer several delivery choices to fit your needs:
- AusPost Untracked Letter: $3. Delivery in 3-8 business days (untracked). No refunds or replacements without proof of receiving the order.
- Free Delivery: Orders over $50 qualify for free tracked delivery via AusPost Parcel Standard (3-6 business days). Note: Raspberry Pi Model B boards are not eligible for free delivery.
- AusPost Parcel Standard: $8. Tracked delivery in 3-6 business days.
- AusPost Parcel Express: $13. Express tracked delivery in 1-3 business days.
Additional Information
- Non-metro addresses in WA, NT, SA & TAS may require extra time.
- Certain batteries (like LiPo) cannot be shipped by air, affecting Express Post availability.
- We recommend selecting tracked options for valuable items. Untracked orders will not receive tracking numbers or refunds without proof of delivery.
Warranty & Refund Policy
Warranty & Refund Policy
Warranty & Refund Policy
- Standard Warranty: 12 months for all products. Low-cost hobby parts have a 90-day warranty unless safe handling is shown.
- Exceptions: Kits and interfaceable electronics may not be covered if damaged due to misuse.
- Returns: Contact support via your order confirmation email within 30 days of purchase. Items must be unopened and in original packaging. Proof of purchase is required.
- Defective/Damaged Items: Notify us within 14 days for a free refund or replacement.
- Return Shipping Costs: Paid by the customer unless the item is defective. Shipping costs are non-refundable.
HC-SR04 Ultrasonic Distance Measuring Sensor
The HC-SR04 Ultrasonic Distance Measuring Sensor is a versatile component commonly used in Arduino and other microcontroller projects. It uses sonar to determine the distance to an object. It reads distances from 2cm to 400cm (approximately 0.8 inches to 157 inches) with an impressive accuracy of 0.3cm (0.1 inches). This level of precision makes it suitable for most hobbyist projects.
Key Features:
- Power Supply: +5V DC
- Quiescent Current: <2mA
- Working Current: 15mA
- Effectual Angle: <15°
- Ranging Distance: 2cm – 400cm (1" – 13ft)
- Resolution: 0.3 cm
- Measuring Angle: 30 degrees
- Trigger Input Pulse Width: 10μs TTL pulse
- Echo Output Signal: TTL pulse proportional to the distance range
- Dimensions: 45mm x 20mm x 15mm
How It Works:
- The ultrasound transmitter (trigger pin) emits a high-frequency sound (40 kHz).
- The sound travels through the air.
- If it encounters an object, it bounces back to the module.
- The ultrasound receiver (echo pin) detects the reflected sound.
- The time between transmission and reception allows us to calculate the distance using the formula:
- Distance to an object = ((speed of sound in the air) * time) / 2
- Speed of sound in the air at 20°C (68°F) ≈ 343 m/s
Pinout:
- VCC: Powers the sensor (5V)
- Trig: Trigger input pin
- Echo: Echo output pin
- GND: Common ground
The HC-SR04 is widely used by Arduino enthusiasts for various applications. If you’re working on a project, consider integrating this reliable sensor!