In our Arduino projects (programmed in C/C++), we often use a Raspberry Pi for collecting data, and the Python programming language. Math with floating point is inherently risky, because a decimal number does not store exactly in binary. in python,
For all of you out there with Chinese NANO clones, or older Arduino NANO’s, there has been a recent change. The upload baud rate has been bumped up from 57600 to 115200, and that causes a upload error.