Just a beginner here with this sensor, I believe to use this, I’ll have to hook up VCC, GND, and can leave the CTRL pins open for all sensors to be active, and the odd pins 1,3,5,7…15, which are connected to the LEDs 1,2,3,…8 and acts both as inputs and outputs, driven by the mC.
Here are my questions next.
What are pins 2,4,6,8 …14 for?
Can you please provide a sample pin connection with the Arduino board ? Though I’m using an ESP for this project.
Yes, your understanding of all of that looks correct.
The even numbered pins are not used on the MD versions of the QTR sensors (like the QTR-MD-08RC). Similarly, the “CTRL EVEN” pin will have no effect on those versions.
I recommend starting with the QTRRC examples from our QTR Reflectance Sensors Arduino library. The intended connections are described in the comments at the start of the code.
