If a 5v usb serial board is used the ttl port channels of rpi can get permanently damaged.
Usb to uart cable for raspberry pi.
In this post raspberry pi 3 b running raspbian stretch is used.
To connect raspberry pi s gpio pins and usb serial cable.
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Upon inspection there is a usb connector with usb 2 0 full speed compatibility and 3 single pole 0 1m pitch header that connects to a serial port on the raspberry pi board.
The ttl 232r rpi from ftdi is a usb to ttl level serial uart converter cable designed for use with a raspberry pi.
Be sure to select the 3 3v option before connecting to raspberry pi.
The one for use with raspberry pi must have 3 3v uart voltages.
Some usb serial boards offer jumpers that can be set between 5 and 3 3v uart voltages.
Make sure the signal voltage level is correct.
Devmo pl2303ta usb to ttl rs232 com uart module serial cable debug console adapter compatible with arduino raspberry pi 9 99 9.
Inside the big usb plug is a usb serial conversion chip and at the end of the 36 cable are four wire red power black ground white rx into usb port and green tx out of the usb port.
Usb to serial uart converter cable such as this.
In the next lesson we will look at another way of doing much the same thing but over a local network using something called ssh.
3 jumper wires male female.
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In this post a windows 10 pc is used.
Usb to ttl com serial adapter converter cable pl2303 0 1 inch 4 pin tx rx vcc gnd with driver and 20 dupont cable for arduino esp8266 esp32 raspberry pi etc 4 5 out of 5 stars 4 8 99 8.