PL2303 usb to TTL serial adapter jpg pl2303.jpg (28.85 KiB) Viewed 4739 times In the pic above you can see that I have moved the red line from the 5v pwr output to the 3v3 pwr output. Notice also on pin four (4) [ count four down from the dimple in the upper left of the chip pin(1) ] the lan pattern is running down to the 3v3 pwr output. Pin four is a voltage referenc; if connected to 3v3 the Txd pin will work at 3v3 --- otherwise if the reference is connected to 5v then the Txd line will work at 5v!-- and destroy your PI when you plug it in to GPIO15! Always make sure (by looking) that the pin four(4) of the PL2303 is connected to 3v3, and also measure pin 4 carefully with a meter. Most of these units will open up (as in my pic) if you're very careful. Also, if you happen to get a PL2303 that has pin 4 tied to 5v, not to worry.

I'm going through the same hellish experience here with a Prolific USB Serial adapter and so far Linux is the. Putty on ubuntu There is no need to install the driver for PL2303 So only type the command to enable the putty Sudo chmod 666 /dev/ttyUSB0 Done Open the putty. Browse other questions tagged linux serial-port usb hardware. How do I connect to a serial device using USB to Serial Convertor in Linux? After wasting 2 hours trying to get this working in Windows I powered up Linux Mint. Corel knockout 2 plugin for adobe photoshop. Loaded the necessary kernel module and tested. All in all 20 minutes taken. ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port Bus 001 Device 001: ID 1d6b:0002.

Just lift the pin four with a scaple and soldering iron and tie the open pin to the 3v3 pwr reference. While the PL2303 is open, also check to make sure the black wire is soldered to ground, the white wire is soldered to Rxd, and the green wire is soldered to Txd. (sometimes the white and green wires get reversed; that's ok, as long as you are consistent).

Just know which wire is Txd. In order to get a true serial console running on the PI 3B several config changes must be made.

A true serial console will 'see' bootup messages on powerup (normally going to tty1) and will also see powerdown messages on shutdown. As well, console messages will be displayed to the serial console if it has been configured to be the console. Code: console=serial0,115200 console=serial0 Shutdown the system with sudo poweroff With the power off, plug your PL2303 usb to ttl serial cable into the Raspberry PI GPIO pins paying attention to the color scheme; black (ground) goes to board number #6 ground, white goes to board #8 GPIO14, and green goes to board #10 GPIO15. To be clear, the green wire should be the PL2303 Tx line! (make sure) The RPi GPIO15 is the recieve pin; so, the Tx pin of the PL2303 plugs into GPIO15. Also, GPIO14 is the transmit pin of the RPi; so, the Rcv pin of the PL2303 plugs in there.

Tx-->Rcv & Rcv-->Tx (if you get them reversed it won't work) Plug the PL2303 usb connector into your PC. I am using an HP notebook running gnu+linux (Mint, another debian derivative). It will be important to know the device name of the usb to ttl converter. Mine showed up as /dev/ttyUSB0.

You can use the command. Code: sudo screen /dev/ttyUSB0 115200 Enter your password, and then press the enter key. A blank screen is normal. Now, poweron your Raspberry PI. If everything is working you wil soon be seeing the console bootup messages fly by, ending up with a Raspberry PI console login.

Logon as pi like normal you do. (please see the man pages or on-line documentation for correct config and usage of screen and minicom). (if you find something out of place, or wrong, send me a private message and I'll fix it. Cancelor wrote: Looks like this would be exactly the same instructions for any model of RPi? As far as the PL2303 is concerned, yes; otherwise no--- because, the model 3B (aside from moving to systemd with Jessie) added blue tooth to the mix. Which had a considerable impact on the serial port, even the naming conventions of the serial ports.