DIY Ultrasonic Ranging Electronic Kit HC-SR04 Ultrasonic Distance Sensor Module DC 4.5-5.5V with Voice Announcement

Features:
1. Distance measurement range: 5cm–3meters. Achieves maximum accuracy within 3meters, meeting measurement needs across various spaces.
2. Three-digit LED display: Measured distances appear on the LED display (displayed in meters).
3. Features buzzer alarm, automatic voice announcement, and automatic distance broadcast functions
4. Power supply options: DC power adapter or battery compartment. Select one power source at a time; do not use both simultaneously
5. Easy soldering and simple operation, ideal for DIY enthusiasts, hands-on projects, and obstacle detection applications

Parameter:
Supply Voltage: DC 4.5-5.5V
Measuring Range: 5CM-3meters
Display Method: LED Digital Tube Display
Power Supply: DC 5V or 3 x 1.5V AA Batteries (Batteries not included)
Power Interface: DC 5.5*2.1MM
PCB Board Dimensions: 78*67mm

Function (Instructions):
After powering on, press the power lock switch to initiate distance measurement. The measured distance will display on the digital tube (in meters) and be automatically announced via voice prompt. The system will also announce the distance whenever a significant rapid change occurs.
Function of the 4 buttons:
1. The leftmost “-” button reduces the alarm distance. It is only effective when pressed within the settings interface; pressing it normally has no effect.
2. The “+” button increases the alarm distance. It is only effective when pressed in the settings interface; pressing it normally has no effect.
3. The “SET” button is the settings key. Press once to enter the settings interface, where the + and – buttons become active. Press again to exit the settings interface.
4. The rightmost “speaker symbol” button is the manual voice playback key. Pressing it once will play the current distance measurement data.

Package include:
DIY Kit*1

DIY Component Shipping List:
Component Name Quantity
PCB Board 1
HC-SR04 Ultrasonic Distance Sensor Module 1
0.56-inch 3-digit Common Anode 7-Segment Display 1
40-Pin IC Socket 1
STC89C52 (Pre-programmed) 1
DC005 Connector 1
USB to DC005 Power Cable 1
AAA Battery Holder (3-Cell) 1
5V Active Buzzer 1
5mm Red LED 1
8×8 Latching Switch 1
8×8 Latching Switch Cap 1
6x6x14 Keypad 4
2K Resistor 9
4.7K Resistor 7
9012 Transistor 4
22P Ceramic Capacitor 3
12M Crystal Oscillator 1
10μF 25V Electrolytic Capacitor 2
50MM Silicone Wire 2
29MM Speaker 1
104 SMD Capacitor 1
47μF 16V Tantalum Capacitor 1
Voice Chip 1