Python Serial Read Example
Syntax
Parameters
In this section, we will focus on sending data from the Arduino to the computer over a serial connection, and then plotting it with Python.We will use the data from a potentiometer as an example for the code below since it involves only a simple analogRead. In addition, I have limited the scope of this post to just sending float and int data types since these 2 data types will be sufficient. This data is then sent to the serial port as comma delimitted line, where the termination character is ‘/n’. That is, the serial data looks like this: The idea is that I’m putting some data on a serial port over time, and now I can write a python script to read and plot it. Creating the real time plot. Read the Docs v: latest. Versions latest stable v2.4.0 v2.3.0 v2.2.0 v2.1.0 v2.0.1 v2.0.0 v1.5.2.post0 v1.5.2.
| parameter | details |
|---|---|
| port | Device name e.g. /dev/ttyUSB0 on GNU/Linux or COM3 on Windows. |
| baudrate | baudrate type: int default: 9600 standard values: 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200 |
Remarks
Check what serial ports are available on your machine
To get a list of available serial ports use
at a command prompt or
from the Python shell. Download aqw bot for mac.
Initialize serial device
Read from serial port
Python 3 Serial Read Example
Initialize serial device
to read single byte from serial device
to read given number of bytes from the serial device
Python Serial Read And Write Example
to read one line from serial device.
Python Serial Read Byte Example
to read the data from serial device while something is being written over it.