Meco DIY Infrared IR Reversing Radar Speed Tester Kit Electronic Assembly Debugging

Description: Infrared reversing radar is composed of multivibrator circuit, infrared signal transmitting and receiving circuit, infrared signal amplification and voltage comparison circuit. It has the characteristics of simple circuit, low cost and stable circuit. It is widely used in various measuring situations. Working principle: 1. Infrared emission tube HF and infrared receiver tube HJ has polarity (long pins are positive) do not install them wrongly, the installation direction can be up or side. RP1 adjust the reflection distance, RP2 adjust the sensitivity, you can try when the distance is 30cm and LED3 bright, LED2 and LED3 bright when the distance is 20cm, and all of them bright when there is 10cm. Cover the infrared sensor with white paper has the best reflection effect. 2. Time base circuit NE555 and the surrounding components consist of the multivibrator, generate infrared wave signal and output by the IC3 pin 3 and drive the infrared emission tube HF to emit infrared signal. Note: Battery is not included. Package included: 1 x IR Reversing Radar Speed Tester Kit