In general, GPIO can be used to control digital I/O on OpenMV. To write data on OpenMV GPIO, we can use value() to write and read data from GPIO. Further information about GPIO API, you can read it on .
You can see OpenMV GPIO pinout on the following Figure.
In this chapter, we build a program to illustrate how OpenMV GPIO work. We need a LED and a pushbutton.
Let's start!.