51 Single-chip Microcomputer Ultrasonic Distance Measuring Equipment Parking

51 Single-chip Microcomputer Ultrasonic Distance Measuring EquipmentParking Sensor Alarm HC-SR04 Module 51 single-chip microcomputer ultrasonic Distance measuring equipment Parking sensor alarm HC-SR04 ultrasonic distance measurement module【1】 Function DescriptionThe ultrasonic Distance measuring equipment of single chip microcomputer is designed with single chip microcomputer+HC-SR04 ultrasonic sensor+Nixie tube+button+buzzer.1. Key description: Starting from the first one on the left, use the - key,+key, and set key.2. Model of microcontroller: STC89C52.3. The alarm distance can be set. After pressing the setting button, you can press the plus or minus keys to modify the alarm distance, and it has a power down save function.4. When the measured distance is less than the set distance, the buzzer will alarm.5. Module measurement range: 5cm --4m.6. This design can be used as a Parking sensor for cars.7. The characteristics of this design are wide measurement range, stability, and very convenient operation. It can be used when powered on.2、 Circuit parametersInput voltage: DC 4.5-5.5VThe bottom plate size is 6 * 7CMAfter adding a probe, the overall size is approximately 6 * 9 * 3CMDIY bulk weight 80 grams;DIY bulk shipment list:Component Name QuantityPCB board 1HC-SR04 Ultrasonic Ranging Module 10.56 \"3-position Gongyang Nixie tube 140P IC socket 1STC89C52 (Burn Program) 1DC005 Block 1USB to DC005 power supply line 17th, 3rd battery pack 15V active buzzer 15MM red LED 18 * 8 self-locking switch 18 * 8 self-locking switch cap 16 * 6 * 12 button 31K resistor 94.7K resistor 79012 transistor 422P ceramic chip capacitor 312M crystal oscillator 110UF Electrolytic capacitor 1Picture of physical items shipped in bulk:Picture of the front of the empty circuit board (different batches may have different colors, please understand):The circuit board is made of FR-4 military grade A material. The tolerance of the material and the stability of some parameters make A material very strong, which benefits from its high price compared to other materials. On PCB boardPicture of the back of an empty circuit board:Directly printing the parameters of the components allows for direct welding without referring to the circuit diagram, which is quite convenient.1. Double sided wiring, solder pads sprayed with tin and treated with increased tin process, can withstand multiple repeated disassembly and soldering, and are not easy to fall off;2. It is not easy to undergo self bending (referring to bending caused by non manual conditions), and poor boards will bend over time and environmental changes.3. More stable and reliable impedance;Finished product image after welding: