Based on technical specifications, the **2UDS-10-R/C** (often associated with the **2UDS series**) is a high-performance **Ultrasonic Sensor Module** typically used for distance measurement and object detection in industrial or DIY electronics. Below is a detailed breakdown of its electronic components and characteristics. --- ### 1. Technical Specifications The following table highlights the primary electrical parameters for this specific type of sensor: | Parameter | Specification | | :--- | :--- | | **Operating Voltage** | 5V DC (standard) | | **Operating Current** | < 15mA | | **Ultrasonic Frequency** | 40 kHz | | **Max Detection Range** | ~4 meters | | **Min Detection Range** | ~2 cm | | **Output Type** | PWM / Digital Pulse (R/C control compatible) | | **Beam Angle** | < 15 degrees | --- ### 2. Core Electronic Components The module consists of several critical stages to convert sound waves into electrical data: * **Ultrasonic Transducer (Emitter):** A piezoelectric element that converts electrical pulses into 40kHz sound waves. * **Ultrasonic Receiver:** A sensitive transducer that detects the reflected sound waves (echoes) and converts them back into small electrical voltages. * **Signal Amplifier:** Since the returning echo is very weak, an onboard Op-Amp (Operational Amplifier) circuit boosts the signal for processing. * **Control Chip (MCU/ASIC):** An integrated circuit that handles the timing of the pulse. It triggers the emitter and calculates the time elapsed until the receiver detects the echo. * **Clock Crystal:** Provides a stable frequency reference to ensure the 40kHz output is precise. --- ### 3. Pin Configuration and Interface The **R/C** designation usually implies it is compatible with Remote Control (servo-style) PWM signals or standard microcontroller inputs. | Pin Name | Function | Description | | :--- | :--- | :--- | | **VCC** | Power Supply | Connects to +5V. | | **Trig** | Trigger Input | A 10µs pulse starts the measurement cycle. | | **Echo** | Echo Output | The duration of the high signal represents the distance. | | **GND** | Ground | Common reference (0V). | --- ### 4. How it Works (Logic Flow) 1. **Trigger:** The user sends a high-level signal to the `Trig` pin for at least 10 microseconds. 2. **Sonic Burst:** The module automatically sends eight 40kHz ultrasonic cycles. 3. **Reception:** The module waits for the reflection. 4. **Calculation:** The `Echo` pin goes high the moment the burst is sent and goes low when the echo is received. * **Formula:** `Distance = (Time High × Speed of Sound) / 2` --- ### 5. Implementation Example Here is a basic example of how to interface a similar sensor with an Arduino: ```cpp const int trigPin = 9; const int echoPin = 10; void setup() { Serial.begin(9600); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); long duration = pulseIn(echoPin, HIGH); int distance = duration * 0.034 / 2; // Speed of sound is 0.034 cm/us Serial.print("Distance: "); Serial.println(distance); delay(100); } ```