![]() Remember, for UART communication you do not match up TX TX and RX RX, it’s the opposite (TX –> RX and RX <– TX) since one device transmits and the other receives. You’ll need a Raspberry Pi (of course) and a USB -to-Serial device ( like this one from Adafruit).įirstly, connect the RX of the USB-to-Serial device to Pin 8 of the Pi (physical Pin 8, not the GPIO pin number) and TX of the USB-to-Serial device to Pin 10 of the Pi. ![]() usr/bin/env python import time import serial ser serial.Serial( port'/dev/ttyUSB0', baudrate 9600, parityserial.PARITYNONE, stopbitsserial.STOPBITSONE, bytesizeserial.EIGHTBITS, timeout1 ) while 1: xser. I’m using Windows to demonstrate but this works equally well on Linux and Mac. Programming for Serial Readis very similar to Serial Write, except for one difference we use the port that we got a few steps ago, which in my case this was ttyUSB0. ![]() Quick disclaimer: This article assumes basic familiarity with the Raspberry Pi and the basics of interfacing with serial devices. It’s also quite necessary when you are using a Pi as a wireless access point for a LAN without internet sharing. This allows for network-free headless access, including the absolutely necessary tab auto-complete! This feature is extremely useful for those projects that don’t use a screen or need network access. It’s not very well known that the Raspberry Pi has a built-in serial console that provides a fully working Linux terminal over serial.
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