SunFounder 3in1 Kit
Adjust the Module
Before starting the project, you need to adjust the sensitivity of the module.
Wiring according to the above diagram, then power up the R4 board (either directly into the USB cable or the 9V
battery button cable), without uploading the code.
Stick a black electrical tape on the table and put the cart on it.
Observe the signal LED on the module to make sure it lights up on the white table and goes off on the black tape.
If not, you need to adjust the potentiometer on the module, so that it can do the above effect.
5.5. 4. Follow the line 241
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