i'm trying to use GML2100 Geomagnetic Parking Detection Module Sensor Module TTL UART 2.2-3.6V 11uA
i tried to use STATE pin as a digital output pin for detection but it always reads LOW even if there's a car above the sensor.
i tried UART but nothing is received except when power up the module.
that's what i receive in hex : 08 03 07 C4 53 1F 00 21 00 00 A5
anyone has any experience with it on how is it working ?
thanks in advance.