ITEM NAME:3pcs-RPI-1031 Angle Sensor Four Direction Sensor 4 Direction Sensor Bra KCN Descriptio n Description 100% new high quality Material: PCB Color: picture color Size: 15 * 10 mm Weight: 0.01 kg Product list: 3 * angle sensors Rpi-1031 angle sensor four-way sensor The sensor can only output 4 directions. Introduction to ROHM four-way sensor rpi-1031 Working guidelines: 1. Realized by optical principle: there is a light-emitting diode and two light-sensitive receiving transistors inside; there is also a cylindrical lampshade 2. Detect the current state of the rpi-1031 by blocking the LED and the photosensitive receiver tube with a cylindrical shadow 3. When the rpi-1031 is in the state as shown, the light-emitting diode is blocked by the light-shielding object. Two photosensitive receiving transistors cannot receive light and are in an off state, corresponding to an output low level 4. When the RPI-1031 is rotated as shown in the figure, one of the light-activated triodes blocks, and the LED light only receives the light-activated transistor above, that is, the light-activated transistor is turned on, and the light-activated transistor is turned off. The following two GPIO port outputs are high and low; 5. When the rpi-1031 continues to rotate in the state shown in the figure, the shadow object will not be shielded and the diode will emit light. Both phototransistors can receive it and can therefore be turned on. 6. When rpi-1031 is further rotated in the figure, this state is completely opposite to the state described in 4, and the high and low outputs of the two GPIO ports are exchanged. We offer you what you need! 3pcs-RPI-1031 Angle Sensor Four Direction Sensor 4 Direction Sensor Brand New.Rpi-1031 angle sensor four-way sensor. Product list: 3 angle sensors. The sensor can only output 4 directions. Introduction to ROHM four-way sensor rpi-1031. The following two GPIO port outputs are high and low;.