• Raindrops Detection Sensor Module for Arduino with connection wires and sensitivity adjustment features
  • Raindrops detection sensor module for Arduino, features potentiometer, digital output, and compact design, dimensions 14.2mm x 31mm.
  • Raindrops detection sensor module with a 54x40mm sensor area for Arduino, featuring nickel plating and sensitivity adjustment.
  • Raindrops detection sensor module for Arduino with blue PCB, featuring VCC and GND pins for easy connectivity.
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Raindrop Detection Sensor Module MH‑RD 3.3–5V for Arduino

Raindrop Detection Sensor Module MH‑RD 3.3–5V for Arduino

🔥 8 sold•✓ In stock
HK$15.00
HK$15.00
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Delivery Options

  • Local delivery within Hong Kong and in-store pickup.​
  • Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.​
  • Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).​
  • Estimated delivery time: 1–3 business days after dispatch (Hong Kong).​
  • In-store pickup details (location and time) will be confirmed by email or phone message.​
  • Delivery times are estimates and may be affected by weather or unforeseen circumstances.​

The MH‑RD Raindrop Detection Sensor Module is a simple rain and water‑drop detector consisting of a nickel‑plated FR‑04 rain board and an LM393 comparator control board. It provides both digital (DO) and analog (AO) outputs, making it ideal for weather monitoring, smart irrigation, and DIY Arduino or Raspberry Pi projects.

Key features

  • Large 54 × 40 mm rain board made from double‑sided FR‑04 with nickel‑plated surface for excellent conductivity, oxidation resistance, and long service life.
  • Separate 31 × 14.2 mm control PCB with LM393 wide‑voltage comparator, power/output LEDs, and sensitivity adjustment potentiometer.
  • Operating voltage 3.3–5 V DC with strong output drive capability over 15 mA, compatible with most 3.3 V and 5 V microcontrollers.
  • Dual outputs: digital DO for simple rain/no‑rain detection and analog AO voltage proportional to the amount of water on the sensor surface.
  • Mounting holes on the rain board and control board for easy installation in weatherproof enclosures or project boxes.

Specifications

  • Rain board size: approx. 54 mm (L) × 40 mm (W).
  • Control board size: approx. 31 mm (L) × 14.2 mm (W).
  • Working voltage: DC 3.3–5 V.
  • Outputs: DO (TTL digital switch output), AO (analog voltage output).
  • Comparator IC: LM393 wide‑voltage comparator.
  • Output current: > 15 mA.

Pinout and wiring

  • VCC: Connect to 3.3–5 V power supply.
  • GND: Connect to power ground.
  • DO: TTL digital output, HIGH when dry and LOW when rain is detected (threshold set via potentiometer).
  • AO: Analog output, connect to MCU ADC pin to measure rainfall intensity.

Package includes

  • 1 × Raindrop sensor board (54 × 40 mm).
  • 1 × MH‑RD control module PCB (31 × 14.2 mm).
  • 1 × 2‑pin Dupont cable set for connection.
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