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amymcgovern / pyparrot

Python interface for Parrot Drones
MIT License
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multiple parrot mambo drone control #142

Open Shatad-Purohit opened 5 years ago

Shatad-Purohit commented 5 years ago

I am trying to connect two parrot mambo drones, with my code. Initially I see that my laptops connects to both the drones (I see both the drone-lights stop blinking), but only one drone takes off. I am trying to control both the drones simultaneously (swarm scenario), can you help?

from pyparrot.Minidrone import Mambo

mamboAddr1 = "E0:14:2E:0B:3D:C8" mamboAddr2 = "D0:3A:EE:55:E6:22"

mambo1 = Mambo(mamboAddr1, use_wifi=False) mambo2 = Mambo(mamboAddr2, use_wifi=False)

print("trying to connect") success1 = mambo1.connect(num_retries=3) success2 = mambo2.connect(num_retries=3) print("connected: %s" % success1) print("connected: %s" % success2)

if (success1): mambo1.ask_for_state_update() print("taking off1!") mambo1.safe_takeoff(5)

if (success2): mambo2.ask_for_state_update() print("taking off2!") mambo2.safe_takeoff(5)

if (success1): mambo1.safe_land(5) print("landing1!") mambo1.disconnect()

if (success2): mambo2.safe_land(5) print("landing2!") mambo2.disconnect()

amymcgovern commented 5 years ago

You can only connect to one mambo at a time using BLE. It says that in the documentation too. It's an issue with the underlying BLE package. You can control two using the same laptop but you have to use two separate scripts.

josefias commented 5 years ago

hi there, when i run this code but change the 'safe_takeoff(5)' and 'safe_land(5)' to just 'takeoff()' and 'land()'. but 2 drones its de max that i have achieved. but i came here to ask

, wy cant the BLE maintain more that that, shouldn't it be possible tto go up to 8 paired devices in BLE? Is it just because it wasn't designed for it?

amymcgovern commented 5 years ago

The underlying BLE library I am using is limited to 1 per session. Then BLE itself takes bandwidth. It isn't infinite. My pi would only sustain 8.

josefias commented 5 years ago

where you able to fly 8 mambos at the same time?

amymcgovern commented 5 years ago

Yes, I had them doing a simple program of taking off, flipping, and landing. But I got 8 in the air at once, maximum. 6 was more reliable.

sergiyz57918 commented 5 years ago

Am I understanding correctly that BLE works only in Linux?

amymcgovern commented 5 years ago

Correct. The underlying BLE library that I use is only supported on linux. If you can find a supported BLE library that is multi-os, I would happily upgrade. At the time I wrote the library, such a multi-os BLE library did not exist.

sergiyz57918 commented 5 years ago

Did anyone try to use multiple Wi-Fi adapters in order to control multiple drones?

sergiyz57918 commented 5 years ago

https://wiki.qt.io/Main https://www.qt.io/qt-for-python Qt seems to be multiplatform BLE library

amymcgovern commented 5 years ago

Qt is a GUI library. Not a BLE library...

ukBaz commented 5 years ago

I also thought Qt was just a GUI library but @sergiyz57918 comments prompted me to investigate. I found a company update from July 1st 2015 that said: https://www.qt.io/company-updates/qt-5-5-introduces-windows-10-support-adds-full-bluetooth-low-energy-official-support-for-red-hat-enterprise-linux-6-6

This latest release also includes features such as Bluetooth Low Energy (Bluetooth Smart) especially beneficial for IoT (Internet of Things) deployments where it is now easy to write cross-platform code for communicating with smart sensors, wearables and other BLE-enabled peripherals. In addition, a new version of the integrated development environment, Qt Creator 3.4, enables more code and design productivity than ever before.

And some C++ examples for Bluetooth at: https://doc.qt.io/qt-5/bluetooth-examples.html

Haven't found anything for Open Source or Python as of yet.

Do you have any links @sergiyz57918 ?

amymcgovern commented 5 years ago

Well, we need something python :) That's why I chose the library I chose. And the underlying protocol for BLE differs by OS. I looked into it deeply when I was deciding what to use.

batfolx commented 5 years ago

I actually DID manage to connect multiple Mambo drones at the same time and have them fly in the air. The way I did this is I had another python file in the same project but in another directory that contained some code make my secondary Mambo take off. In my main code, I had my main Mambo launch sequence in a function by which I made a Thread. I then made another thread to call that python script that activated the second drone. The way I called that script was with pythons os library. I used os.command("python3 /mambo_1.py") and then it worked for both drones. I have the code in my repo, Swarm. Just thought that was so awesome I had to share.