Charles Linquist
  • Male
  • Campbell, CA
  • United States
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Charles Linquist's Groups

Charles Linquist's Discussions

Can't compile for PixHawk on Windows

Started Sep 15, 2018 0 Replies

I'm using Windows7/32I used the instructions found at:…Continue

Tags: pixhawk, code, Compile

Can't graph telemetry logs

Started Jul 21, 2018 0 Replies

For many versions of MP, I cannot graph log files.   I can load and "play" the log files, but I cannot GRAPH the telemetry log files.I have tried several computers, removed and re-installed MP, but…Continue

Tags: Files, Log

Still can't graph logs in MP

Started this discussion. Last reply by Andre K. Jun 19, 2018. 1 Reply

I'm running Mission Planner 1.3.56. I have been unable to graph logs for some time.  I have upgraded with every release in an attempt to get this working again.  While I can't say exactly when the…Continue

Missing parameters in MP

Started Jun 8, 2018 0 Replies

I'm using the latest PixHawk firmware (I believe it is 3.5.5), and I want to adjust some parameters that don't appear in MP at all.  This is a multirotor quad.For example:  In the SERVO FUNCTIONS, MP…Continue

Tags: Parameters, Missing

 

Charles Linquist's Page

Latest Activity

Charles Linquist left a comment for B A Kanchuka
"OK, I'll give you a few details. I'm using a Raspberry pi 4, although a RPI 3B+ or RPI3A+ will work also. I also use a Raspberry pi camera. Mounted on top is a SixFab Raspberry Pi 3G/4G "hat" with a Quectel EC-25X modem. Here,…"
Jul 12
B A Kanchuka left a comment for Charles Linquist
"Hi,    I want to know the steps and the process to connect the Pixhawk to the internet (Through a RPI onboard computer connected to the Pixhawk through a server like you successfully did by 4G/3G) and on how to connect multiple Vehicles to…"
Jul 12
Charles Linquist left a comment for B A Kanchuka
"What do you want to know?  I won't give you 100% of the details, because I'm preparing a 4G telemetry/control + video product for sale. I also am finalizing an Object Avoidance system using radar. It works with any Mavlink-Compatible…"
Jul 11
B A Kanchuka replied to Charles Linquist's discussion Telemetry and HD video over 4G
"Hi,  I'm building a fleet of Arduboats (say 15 Nos) running latest Arduboat firmware on Pixhawk FC.  The problem is to connect all those 15 pixhawk boats to a single ground station through an internet connection. I suggest that your…"
Jul 11
Charles Linquist replied to Charles Linquist's discussion Telemetry and HD video over 4G
"A couple of things:  Are you sending streaming video, or just telemetry/control? One thing comes to mind - If you are using a MiFi, you should be using a hard-wired connection.  Relying on yet another WiFi link is probably not a good…"
Mar 16
Maxwell Birley replied to Charles Linquist's discussion Telemetry and HD video over 4G
"Hi Charles I am just getting into controlling "Bots" over the internet. I have a wheeled Rover that it is connected to a Joystick over the internet to the Rover using web sockets. I want to move into an area without a wifi or radio…"
Mar 16
Charles Linquist left a comment for Charles Linquist
"I dropped this project for awhile because I have been working on a larger gasoline-powered hybrid "hex" with 3+ hour airtimes. I should be able to get everything finalized within a week.  I'll let you know. Sometime in the next…"
Dec 9, 2018
Tom Ferguson left a comment for Charles Linquist
"Charles, I live in Sacramento. I didn’t know where Campbell was but I work at PG&E constructing electric vehicle charging stations and we are installing at Champbell UHSD."
Dec 8, 2018
Tom Ferguson left a comment for Charles Linquist
"Do you have an update to this project?"
Dec 8, 2018
Peter Burke replied to Charles Linquist's discussion Telemetry and HD video over 4G
"How do you get the 551 USB modem working on the Raspberry Pi?"
Nov 20, 2018
Tom Ferguson left a comment for Charles Linquist
"Is there any update of your plans to monetize your service and setup? I want to move forward with development for my UAV’s. I have my 4G dongle activated and ready to go."
Sep 21, 2018
Charles Linquist posted a discussion

Can't compile for PixHawk on Windows

I'm using Windows7/32I used the instructions found at:http://ardupilot.org/dev/docs/building-px4-with-make.htmlI downloaded the PX4 toolchain.exe file and installed it.Then, in "All Programs" I chose "PX4 Software Download", but got a bunch of errors.  So, I went to GitHub and downloadedardupilot-master     I changed the name to "ardupilot" and copied that into /c/users/<my…See More
Sep 15, 2018
Tom Ferguson left a comment for Charles Linquist
"Charles, I tried to read through many of your posts on the 4G subject. I am sold on your plan to monetize your solution. If you are taking names to put on your customer list include mine. tferguson@netchino.com. Ideally I’d like to not use the…"
Sep 3, 2018
Tom Ferguson left a comment for Charles Linquist
"Please provide more specific UAV installation for pixhawk 2.1. If I have to subscribe to a service like you’ve set up provide a website or service information. I’m building a Tarot 810 with Reach + for RTK and Panasonic G4 for aerial…"
Sep 3, 2018
Charles Linquist left a comment for Tom Ferguson
"The Amazon server is necessary for two or three reasons:   Verizon doesn't accept incoming data connections.  You can't automatically send data to a cell phone without the cell phone "answering" the call and then…"
Sep 3, 2018
Tom Ferguson left a comment for Charles Linquist
"Why do you use Amazon server? Wouldn’t any server provider work? ie I have a shared Windows server service I use for my website and email. I can install other service and apps. Could that be used? However, why is this server even necessary to…"
Sep 2, 2018

Profile Information

About Me:
Electrical Engineer
Please tell us a bit about your UAV interest
Have 2 quads
Hometown:
Campbell, CA

Comment Wall (10 comments)

At 4:17am on November 13, 2017, Sebastien said…
Hello Charles, Im looking to connect my pixhawk via a raspberry to mission planner. I see that you did it. Could you tell me What kind of server do you instanciate to communicate between raspberry and mission planer ? An amazon aws ? Thank you !
At 9:51am on November 13, 2017, Charles Linquist said…

It gets fairly complex, but - in the Raspberry, I used SER2NET, and connect the serial port of the Raspberry to the telemetry port of the PixHawk.  I plug a VERIZON 4G/LTE "dongle" into the USB port of the Raspberry.  In the Raspberry, I use WVDIAL, pppd and AUTOSSH to make the connection to an Amazon ec2 server via the 4G link..

The Amazon server is running a reverse SSH tunnel.  

On the ground side, I have another 4G/LTE "dongle" plugged into my laptop (but you could use a 'hot spot'), I then set up Mission Planner to use a tcp connection to the Amazon ec2 server using only the 
Amazon server's name and the appropriate port number.

The connection from the 'copter' to the Amazon server is secure, but the connection from that Amazon server to my laptop is not.  I'll change that soon.  I'll use another Raspberry on the ground to create a secure connection to the Amazon server and connect the Raspberry to my laptop via USB.  I need a Raspberry on the ground anyway, because I have designed a "failover" system and PCB which seamlessly switches between 4G and 915Mhz telemetry on both ends.  Both ends (air and ground) transmit simultaneously on 4G and 915Mhz. Both ends pick which source is best at any time and use that source.  Mission Planner cannot switch between two sources of telemetry/control, but the Raspberry can.  The Raspberry picks between validated sources and sends data to MP using one connection method and one data rate.

At 9:11pm on September 2, 2018, Tom Ferguson said…
Why do you use Amazon server? Wouldn’t any server provider work? ie I have a shared Windows server service I use for my website and email. I can install other service and apps. Could that be used?
However, why is this server even necessary to control a drone over 4G Lte?
At 5:43pm on September 3, 2018, Tom Ferguson said…
Please provide more specific UAV installation for pixhawk 2.1. If I have to subscribe to a service like you’ve set up provide a website or service information. I’m building a Tarot 810 with Reach + for RTK and Panasonic G4 for aerial photos.
At 8:16pm on September 3, 2018, Tom Ferguson said…
Charles,
I tried to read through many of your posts on the 4G subject. I am sold on your plan to monetize your solution. If you are taking names to put on your customer list include mine. tferguson@netchino.com. Ideally I’d like to not use the RPI3 on the aircraft, if there is another way. For instance by using the onboard Edison on the Pixhawk 2.1. Of course I’d like to see the GC packaging and the aircraft side.
BTW the Parrot Disco and Bebop have a mod to use 4G there is a YouTube video of a guy flying across one of the Channels between islands in Hawaii. Let me know how I can follow you.
At 9:31am on September 21, 2018, Tom Ferguson said…

Is there any update of your plans to monetize your service and setup? I want to move forward with development for my UAV’s. I have my 4G dongle activated and ready to go.

At 9:26am on December 8, 2018, Tom Ferguson said…

Do you have an update to this project?

At 9:37am on December 8, 2018, Tom Ferguson said…

Charles, I live in Sacramento. I didn’t know where Campbell was but I work at PG&E constructing electric vehicle charging stations and we are installing at Champbell UHSD.

At 8:00am on December 9, 2018, Charles Linquist said…

I dropped this project for awhile because I have been working on a larger gasoline-powered hybrid "hex" with 3+ hour airtimes. I should be able to get everything finalized within a week.  I'll let you know.

Sometime in the next two weeks, I will give you a demo - where you can "log on" to my copter from Sacramento check out the Mission Planner screen and the live video feed.

At 6:27am on July 12, 2019, B A Kanchuka said…

Hi,

   I want to know the steps and the process to connect the Pixhawk to the internet (Through a RPI onboard computer connected to the Pixhawk through a server like you successfully did by 4G/3G) and on how to connect multiple Vehicles to GCS like Mission Planner/ Q Ground Control. I couldnt find any detailed steps to do this and i am looking for help. I hope that you will guide me through the process.

Also I'm highly interested in buying your 4G Telemetry control Module. 

I'm also searching a 4 directional object avoidance system to connect to the boat running on Pixhawk (The boat is big at least 12Ft long and 6Ft wide) 

Thanks,

Kanchuka

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