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amymcgovern / pyparrot

Python interface for Parrot Drones
MIT License
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Downloading pictures over BLE #79

Closed marcosboggia closed 5 years ago

marcosboggia commented 6 years ago

Hi! I found out that the only way to obtain the pictures for mambo is over WiFi. I would like to know if its possible to transfer them over BLE and an idea on how that could be achieved. Thanks!

amymcgovern commented 6 years ago

the image transfer over BLE is VERY slow. More than 3 seconds per picture.

marcosboggia commented 6 years ago

Thanks for the quick response! The thing is that i have to establish a connection only over BLE and obtain the pictures, I only found that possible using the android SDK forcing us to that technology. So i searched other libraries but none worked for us. Do you happen to know a way to get BLE control and picture download feature for parrot drone, available for a raspberry?

amymcgovern commented 6 years ago

I haven't implemented the BLE protocol for downloading the photos. I looked into it but it is not documented at all and the 3 second per photo delay makes it ridiculous to use for any real-time applications. You can take the photos over BLE and download from the phone application.

ukBaz commented 6 years ago

Bluetooth is a collection of binary protocols for short-range wireless communication between devices. The two main ones are:

I wonder if the Android SDK implements the picture functionality using Bluetooth "Classic"?

amymcgovern commented 6 years ago

The mini drones seem to only use BLE. Alas for speed!

ManuelCostanzo commented 6 years ago

Hello, i really need to download pictures over ble. How can i do that ? Thanks

amymcgovern commented 6 years ago

Feel free to implement the protocol. I started on it but abandoned it when wifi came along. Some documentation/discussion here between myself and parrot. It is a messy protocol.

https://forum.developer.parrot.com/t/picture-download-on-mambo/6379/2

ManuelCostanzo commented 6 years ago

Thanks for your reply. I have another question, there is some possibility of downloading the photo while the drone is flying ?

amymcgovern commented 6 years ago

Over wifi, definitely. Already works. Over BLE? Unsure.

marcosboggia commented 6 years ago

Hi @amymcgovern, thanks for your reply. Currently we are trying to implement that feature in nodejs but maybe we can do it in python too, we'll se what we can do. Besides that i have some question about these drone. Do they all have an usable 90 degree camera pointing to the floor? (Bebop and mambo fly/mision). I couldn't find a very reliable source. Thanks!

amymcgovern commented 6 years ago

The bebop (and I assume the anafi, though I don't have one) both have cameras that tilt. You can point the bebop camera from 30 degrees to -90 degrees (straight down). It is also fisheye so it has a wide field of view. Mambo does not move its camera. it is fixed forward facing. The downward camera on the mambo is of very poor quality.

AlexanderDavid commented 4 years ago

@marcosboggia Have you had any success implementing the BLE groundcam in nodejs?