[HOW TO] TTL to Ethernet with RPI

UAVPilot

Chuckster1,
This is the UART I have and tried to connect over the weekend, see link: http://www.usriot.com/p/uart-serial-ethernet-modules/

Last night I connected 5V to the UART and connected GRD. Connected an ETH cable to ly laptop, I then noticed the blinking lights on the UART.
I got hung up on the loading of the settings. I downloaded the "Ethernet2UART setup.zip" file, but will make another attempt to load onto the UART later tonight. I see I also have to download the "udp_redirect" file as well. You answered my main question, and that is to load the setting onto the UART before connecting to the RPi.

Chuckster1

I think the ip of the module is set at 192.168.0.7. Name and password was admin. I disabled my wifi and set my ip of my laptop to something in the same subnet.(i.e. 192.168.0.12 for example). I then RESTARTED my laptop and powered up my module and hooked ethernet up to it between my laptop and module. Also, when configuring the module, only have power hooked up. I once tried to change my settings and had rx and tx hooked up.

I was not able to log in to the module. Just put in 192.168.0.7 in browser window, and bam, no special software needed. Just like logging into a router.:-)

Sinamics

Guys, nice to see some activity in here. I`ve been offshore for a week with limited internet access.
Probably going home tomorrow. 🙂 I will be reading through the comments chain then.

UAVPilot

Chuckster1,

The maunal is something that has several variations so that complicates things.  However I finally was able to connect log into the UART, however I am unable to send/recieve data.  I am close to throwing the UART against the wall, In fact I want to see it smash into pieces.

Before doing that, I have sent two messages to USR IOT and 1 trouble ticket. Since I was unable to upload a pic of the specific problem area I have I'm not sure if I will hear back. However, I can make most the setting on the UART but when it comes to chosing a com port, the drop down box is empty. Without this I will not be able to use the device.

I will give it a few more days to hear from them and a few more tries to get it up.

Karl

UAVPilot

All,

I believe I may have 2-way connect with the UART connected the laptop.

So to be clear, download the program you have above "this program" which is the USR-TCP232-Setup V4.2.2, correct?
Also, the default for the baud rate, module port and destination IP are not the same as you have, does this matter?
Where is the dnsutils and how do I download and install dnsutils to your RPI?
I got the the udp_redirect file from dropbox. I'm not a RPI expert, but do I save it to a specific location in the RPI?

And these commands:

sudo apt-get install dnsutils
gcc -o udp_redirect udp_redirect.c
./udp_redirect our-ip our-port send-to-ip send-to-port
./udp_redirect our-ip our-port (echo mode)

5. This is based on if I am using the command line on the RPI, what if I am using GUI?

Karl

Sinamics

UAVpilot.

So to be clear, download the program you have above "this program" which is the USR-TCP232-Setup V4.2.2, correct?

Correct.

Also, the default for the baud rate, module port and destination IP are not the same as you have, does this matter?

Use 57600 as baud rate. Port has to be same as Telemetry port, normally 14550. Destination and gateway IP has to be RPI adress.

Where is the dnsutils and how do I download and install dnsutils to your RPI?
I got the the udp_redirect file from dropbox. I'm not a RPI expert, but do I save it to a specific location in the RPI?

You have to save the udp_redirect to a folder in RPI. e.g /home/pi
I will recommend you to just install the UAVcast, that package installs everything you need, including dnsutils.

However, if you just want to start the udp_redirect, use this command line. Set your gcs address in between those port numbers. Do not change the 0.0.0.0 in the begining. PS! You wont need dnsutils for this line.

./udp_redirect 0.0.0.0 14550 GCS_ip_adress 14550 &

This is based on if I am using the command line on the RPI, what if I am using GUI?

You have to use the command line to run these commands.

UAVPilot

Bernt,

Thanks for your reply but it leads to additional questions.

When I use the USR-TCP232 V4.2.2, it is to program the UART correct? If so, why is the "module work" set as UDP Server and not client?
There is no "telematry port" on the program. So when you stated "port (module port) has to be same as Telemetry port, normally 14550...where is this telemetry port you are referring to?
Once the parameters have been set using that program what do I do with it?
The directions state the UAVcast image is for PRI2, I have the RPI3 model B. Would the UAVcast image work to PRI3 as well?
So in order to save udp_redirect or UAVcast, do I have to download from the web using the PRI or from PC transfer it via USB to a folder like home/pi on the RPI?

I know of github but not familiar with it as I am not a programer. I have gone to http://github.com/UAVmatrix/UAVcast

If I select "Install", it takes me to "install.sh" and "build_UAV.log". Some of us a bit new to github, so I need a little more clearer direction of how to get this UAVcast onto my RPI.

Karl

Sinamics

UAVPilot
I will make a video tomorrow on how to install everything.
Hang on until then.

UAVPilot

Bernt,
Thanks and I will be looking out for it once video is posted. K

Sinamics

Im exporting the video now from Pinnacle.. Will be on youtube in an hour or so.

skylab

got fedup on the ttl issue...sir I think there is something wrong with the ttl, still not connecting to mavlink.

I just ordered for flysky Transmitter with receiver cos my project is nearby. But not giving up, will still try it with a new ttl after my project defence.

Sinamics

Skylab.. Wait an hour for my video, and check your settings vs mine.

skylab

Ok sir ...that will be great

Sinamics

Enjoy!

https://youtu.be/bz7Jlo1rRl0

UAVPilot

Bernt,
Great video, very informative. I will refer to the video to set my RPI and TTL up and will get back.
Thanks K

skylab

Yea great video, I was able to follow up and setup mine.
worked great

Sinamics

Perfect. Glad i could help. I will also make another video using Cell USB dongle instead of wifi.

Please post any other subject you would like me to cover in the next video.

SenZBar

Bernt, A video covering cell configuration would be appreciated. If you could explain the requirements that you need to ensure your cell carrier will meet to ensure you can connect that would also be great.

Sinamics

Thank you SenZBar. noted.

skylab

Please I need help here please.....I was able to get the pixhawk, ttl, and raspberry pi 3 to work according to the great video tutorial posted by Bernt. It gave me a great clue on what I was miss out and fixed. now I plugin flysky fs-i6 2A receiver in rcin port of the pixhawk and 4 esc to the pixhawk too. The transmitter is binded to the receiver of-course but it is not working in the mission planner, that means the rc receiver is not working with the pixhawk. maybe there is something am not getting right, I try using an xbox joystick pad, I configured it in the mission planner respectively, though it armed but will not spin the noisy brushless motors. all I've tried still not working.
please I need help

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