I am new to Windows Phone Development so I would like to open a discussion on Proximity Sensor. I have searched a lot on Proximity Sensor detection event but couldn't find it. Is there any API or any event available for detect proximity sensor. If it's not possible then is there any other possible way for detecting proximity sensor in Windows Phone 7 & 8. Any kind of help would greatly appreciated.
Thank You.
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I am useing DJI Mobile SDK to crtate an APP by Android Studio now.I want to know how to use the GPS signal of the aircraft and the phone to realize position control. Is there any API in the DJI Mobile SDK I can use?
You may follow this sample to run simple higher-level GPS position control https://developer.dji.com/mobile-sdk/documentation/ios-tutorials/GSDemo.html
If you stop at some waypoint, it can automatically hold the position. It is a simple recreation of the DJI pilot app waypoint planning.
For low-level GPS position control requires a higher understanding of the system. This usually allows interesting applications such as allow drone to follow some person or precision landing to some mark or circle around some tower. There is not much open-source implementation available on the internet. You have to search in the MSDK for the API for some basic control and you also need to have deep understanding in the field that you are trying to achieve e.g real-time object detection, low-level control framework, Visual-Inertial SLAM etc
I am new to the drone community. I am trying to use a drone to follow a driving vehicle and record a video, this would be part of my graduate school project.
I know DJI provides an "active track" function but it seems like the maximum speed for the tracking is around 20-25 mph, and it cannot track the vehicle at a top-down angle (drone looks straight down at the vehicle).
I have an idea to send the GPS info of the ego vehicle to my mobile device and use a customized app to read the GPS location and set it as a target so the drone can follow it.
Is it doable? Is it in general worth the effort? Or is it better off to just use the active track and work with the best angle that I can get?
I've done that.
Send gps updates from a tracker phone to the phone connected to rc.
You have to use virtualstick mode in the MSDK. Tha max speed is 15m/s
Virtual stick functions in the DJI Mobile SDK simulate the remote controller's joysticks, and therefore an aircraft can be automated to fly in any way a human can manually fly it. Compared to missions, this is a more complicated, but flexible way to automate flight.
Works very well.
An example:
https://youtu.be/i3axYfIOHTY?t=55
It's a little shaky, but thats fixed now :-)
I'm trying to get the HoloLens's accelerometer data for the purpose of movement speed while in a car.
I tried using the Windows 'Devices' namespace to access their 'Sensors.Accelerometer' object, but that's inexplicably incompatible with the HoloLens ... a Windows Device.
I was able to cheat by calculating the speed of the camera object in Unity, but that only works relative to the headset wearer (when I test the app in the passenger seat of a car, I just the speed at which I move my head around).
Some time ago I'd found a Github repo from MS about HoloLens sensor streams, but I can no longer find it (Dear Future Me, clone EVERYTHING).
Does anyone know if there's another way I can get the accelerometer data? Either in C# or C++.
PS I have Research Mode and MS's demo app on my HoloLens and I've been analyzing that code for answers too. Didn't want anyone to think I show up here looking for a magic bullet!
If you want to use accelerations to calculate speed, you will run into problems because of error propagation and the lack of a reference point. Even if there is no direction change the integration of acceleration over the time will make values are useless after a short period of time. (s. Getting displacement from accelerometer data with Core Motion for example)
An alternative would be GPS but HoloLens doesn't a built in GPS sensor and pairing to phones over bluetooth was not possible in the past (maybe now). That said the only thing I can imagine is oopening a WiFi hotspot on a phone connect the HoloLens to it and write an app that will transfer GPS data via WiFi to the HoloLens app listening on the other end.
I am new on Windows Phone Technology,so I want to get Carrier Signal Strength of Windows Phone,I have seen many links but everyone says no API are available for calculating signal strength,but is there other way to find out signal strength or any third party API are available for windows phone ? Please help me to figure out the solution.
Thanks
As far as I know, there is no API for that. If you take a look at How to get network information for Windows Phone and NetworkInterfaceInfo, you'll see that there is no information besides very limited amount.
Does windows phone currently have APIs for proximity and light sensors?
I want to access these two sensors, but can not find the API.
Is there some methods to use them ?
Unfortunately, no. Sensor APIs available are listed here: http://msdn.microsoft.com/en-us/library/microsoft.devices.sensors%28v=VS.92%29.aspx
If you really need it, then you should find it & vote for it here: http://wpdev.uservoice.com/forums/110705-app-platform ; They are listening to the feedback, if the recent news stories of "native" code access coming soon are true.