Päť Kanál Infračervená Detekcia Sledovania Fotoelektrický Snímač Sledovania Modul
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2021-01-21 4/5 |
The goods received quickly, thank you. . .. But there are several but: 1-LEDs directed forward-bent; for correct work, it is necessary to "catch" the exact angle; it works at a very close distance (about 1-2 cm) 2-optocouples directional down-"see" any surface starting from 15-20 cm and completely do not distinguish Black and white; the trim resistor does not affect these optocouples in any way |