24 Comments

  1. I know this is old, but do you have a copy of the source code?

  3. I was thinking of making a lawn mower with a roller, running on batteries. It would go back and fourth in a garden, in straight lines and dock with a station where its battery was swapped. Is GPS accurate enough for the mower to maintain straight lines for good-looking lawn stripes?

  5. Hi chris how can I chat with you regarding a project

  7. Hey, I am very interested in this project an I want to build my own rover for a School project. But my skills are not so high to completely coding the entire code. So far my car can drive and follow an array of GPS Coordinates, but when its comes to code a whole web server like you did, I got stucked. Can you please send me the Code so I can understand what you did and build my own web application? I would be very happy.
    Thanks in advance.

  9. Could always use uart between the Orange Pi and the Arduino for updates so that you don't have take it back in to reprogram the Arduino.

  10. how about using 3 gps modules for more accuracy?

  11. Why didn't you use your diy nrf24l01 transmitter? It would be easy to add some bit "channels", you could probably also use it to send it a new path or coordinates of a new target – with another nrf connected to a pc. The range is much better than the wifi one.

  12. D-GPS, as mentioned in other comments could be a good solution.

    https://en.m.wikipedia.org/wiki/Differential_GPS

    Perhaps you could take the NMEA stream from a stationary GPS and directly transmit this over one of your LoRa radios to the robot. The robot, knowing the stationary location, could then calculate the current positional error vs the moving GPS on the fly with very little difference in time.

  14. Love the surprise in your voice when the rover drove itself through the gate. Have more faith in your creation Chris. Excellent work.

  15. Nice GPS mast. I think I saw those on banggood, it doubles as a data "logger".

  16. is this up on github? if so, I wouldn't mind taking a look at the code to port the search algorithm so it also works on the orange pi. I could also probably remove the flicker if you want.

  17. Reminds me of the robot I built in College. Wasn't this fancy, but was still fun. Awesome project you have there!

  18. In my robots, I connect the Pi to the Arduino over USB. Then, I install a CLI toolchain to upload from the Pi via USB. (I use PlatformIO but there are several.) This lets me wirelessly program the Arduino over SSH, without having to disconnect it from the robot and connect it to my computer.

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