How can I make GPS control my lawn mower

[Zandro_Sanchez]

Hi sir, I wanna adopt this to use it to my project gps guided robot using esp32. can you help me sir? thank you

[SteveJG]

@Zandro_Sanchez

can you help me sir

only a little bit Zandro. I do not use esp32 or Arduino so I can not help with the bluetooth communication between the robot and your Android .

This might help

GPS Data to map markers

Perhaps either use run time Markers to display all the points your arduino collects. You could use code similar to this [runtimeMarkerFromCSVFile] using Map.CreateMarker The code plots Markers from a csv file but can be adapted to plot Markers as they are recorded from the arduino. or instead of Markers, use a LineString to display a trak of coordinates (Track list) or Use a single design time marker. Record coordinates to a list. Then display a single marker at a time by selecting i…

then read the rest of the thread where people with bluetooth to esp32 offer suggestions

@Zandro_Sanchez

use it to my project gps guided robot

If you have a specific question; I may be able to help. You are sending the linestring coordinates from your espn32 to your Android?

[Zandro_Sanchez]

this is my current progess sir

I'm going to send the coordinates [0,0]/n that I draw on the map, to my esp32. I just need to know how to extract the coordinates format sir. to send Just like what you did here, but send coordinates to esp32

[SteveJG]

@Zandro_Sanchez

how to extract the coordinates format

This should extract coordinates

• select coordinates from map tap
• then use #1 capture coordinate List to transfer them to the Listview.
• in ListView select #2 item you want to transfer to your robot. The examples transfers the coordinates (lat and lon) to the Buttons.

[Zandro_Sanchez]

Hi sir I tried your blocks, and I'm really confused. I don't know how to get the coordinates that I draw on my map to send to via BL

Is this correct way of sending the coordinates to my esp32 sir?

The idea is like this, i plot(map) the coordinates after ploting I will send target loc. to my esp32 in a [0,0] format sir. As many coordinates it can

can you check my app sir? the only problem Im facing is just getting the coordinates that I draw and sending the coordinates via BL
GPS_Guided_Mower.aia (8.2 KB)

[SteveJG]

@Zandro_Sanchez

Is this correct way of sending the coordinates to my esp32

I do not know. What is supposed to happen when you send that code?

@Zandro_Sanchez

the only problem Im facing is just getting the coordinates that I draw and sending the coordinates via BL

I do not think it is possible for you to control your mower this way.

• you want the mower to follow a path you create using a LineString (what many would a track or trac) automatically.
  You can create the track and plot it. Your program so far does that. . What is not clear is the code required to use your esp32 . I certainly do not jbiq what is supposed to happen when you send BluetoothClient.SendText (lat,lon)\n Does that mean the mower moves to that gps location. It doesn't matter, I do not know how to help you with this. I don't have an esp32 with a gps module or a mower that can control a motor to advance, stop, turn etc. the mower.

• realistically the gps in your esp32 can on its BEST day is resolve 2 meters (it will probably at best resolve to 10 meters). That is what your can do too.

• have you read Using the Location Sensor

• what someone tried might help. It is supposed to use App Inventor to control it.

[Zandro_Sanchez]

Yes just like that

@SteveJG

you want the mower to follow a path you create using a LineString

Yes, sir, just like that. I have already completed the hardware, and the code for my esp32 is also ready. my only problem is sending the coordinates that I draw on the map to esp32 via bluetooth, just like sending a text to it. For example, sending sc/n text will halt the cutting motor.

BluetoothClient.SendText sc\n

What i want to do is extract the coordinates that i draw and send them as lat,long/n text. Even how many lat and long the esp32 will receive I already code it that way.

I just need to know where will I get the coordinates that I draw and how to send the coordinates via bluetooth in a text form lat,long/n.
is it
BluetoothClient.SendText get global Coordinatelist(for example)? Idk, this is just what I want to know sir

@SteveJG

what is supposed to happen when you send BluetoothClient.SendText (lat,lon)\n Does that mean the mower moves to that gps location

[SteveJG]

@Zandro_Sanchez

extract the coordinates that i draw and send them as lat,long/n text

perhaps this

It moves the Marker where you touch the map and sends lat,lon using Bluetooth.SendText as indicated and to a Label.

and will do the same every time you touch the map.

That's all it does.   That's all I can help you with. I won/t waste my time using a LineString to send all its coordinates.  I believe that is NOT USEFUL. Good luck.

[3dmixer]

You need a GPS with more precision like RTK. You will never be able to control lawnmower with phone gps

[Zandro_Sanchez]

Hello sir sending coordinate is working, thank you. But how to send multiple coordinates? (not gonna use linestring to send all its coordinate ) I will be using markers instead just like this,

which I found here From list of coordinates to marker + linestring on map But viseversa, marker+ linestring on map to coordinatelist. Your help would be very much appreciated for my school project. thank you sir

[SteveJG]

@Zandro_Sanchez

sending coordinate is working

Very good.

@Zandro_Sanchez

I will be using markers

• if you do that, use a Runtime Marker or have a lot of Designtime markers on your Android map.

You already have a List of the coordinates. Consider using a Clock to automatically send the coordinates (which are in a List) at a set interval. This way you won't need all the coordinates captured in a LineString (only the most important coordinates at where the lawn mower is supposed to change direction).

Just try something Zandro. You have to do a trial and error exercise because only you have the hardware to test the feasibility of doing it and know exactly how the app should behave.