3pcs Infrared Parking Sensor Kit Infrared Reversing Speed Reminder Electronic PCB Circuit Board Production DIY Kit

Description The infrared reversing radar is composed of a multi resonant circuit an infrared signal transmitting and receiving circuit an infrared signal amplifying and a voltage comparison circuit and has the characteristics of simple circuit low cost and stable circuit operation and is widely used in various ranging occasions Power supply 6VSize 65 45mm Installation and commissioning and simple principle description 1 The infrared transmitting tube HF and the infrared receiving tube HJ have polarity long legs are positive please do not install the wrong ones the mounting direction can be upwards or sideways RP1 adjusts the reflection distance RP2 adjusts the sensitivity LED3 can be bright when the distance is 30cm LED2 and LED3 are bright when the distance is 20cm and fully bright when the distance is 10cm The infrared sensor is covered with white paper to block the reflection effect 2 The time base circuit NE555 and surrounding components form a multivibrator to generate an infrared wave signal which is output through the third pin of IC2 and drives the infrared transmitting tube HF to emit an infrared signal NameParameterPCB markQuantityElectrolytic capacitor1UFC1 C2610UFC33100UFC5347UFC63Ceramic capacitor104pC4320PFC73Adjustable potentiometer50K 503 RP1 RP26LEDRed 5mmLED1 LED39Infrared emission5mm WhiteHF3Infrared reception5mm BlackHJ3SMD resistor1KR1 R4 R8 R182110KR2 R3 R199200ohmR9 R12 R13 R14121 5KR10330KR15347KR163DiodeIN4148D1 D26Socket2PJ13IC