The initial release notes for Tango stated that the mini HDMI port was not functional. There has been no statement about HDMI since. Has anyone tried the HDMI port lately? Any other known options for getting external video? I tried using a SlimPort adapter with the USB port with no luck. I am assuming that since an HDMI port is provided that there is no internal support for SlimPort. The last time I gave a demo I clipped a webcam on my lapel and pointed it at the screen. How's that for high tech? Any better options?
The HDMI port works fine for me, I am using the dock with it though so perhaps it doesn't work when charging via USB, I'll have to test and see.
I am using the HDMI port with a cable from the device to a TV, mirroring my display. Works fine.
I haven't had success with the HDMI port, however I have seen something like this in the past:
https://www.ibm.com/developerworks/community/blogs/mobileblog/entry/mirroring_an_android_device_screen_onto_your_desktop?lang=en
Related
I am quite new to KaiOS and was wondering if it is possible to build an app that sends / receives serial communications (for instance communicate with Arduino) over a physical cable connected to the phone.
I am currently doing it on Android using this library https://github.com/mik3y/usb-serial-for-android, and would love to do it on KaiOS.
I looked at the permissions and see that there is nothing related (https://developer.kaiostech.com/core-developer-topics/permissions) but I did not find any info saying that it is possible (or not possible) to do it
If not possible, any idea of how to do Serial communication between a feature phone and an Arduino is welcomed !
Thanks for you help !
Nope. KaiOS phones do not support USB Host mode.
I've tried plugging USB mouse and keyboard in Nokia 2720 using USB OTG cable, the phone did not even provide +5V power to the USB port (my keyboard lights up LED if I plug it into USB charger)
Likewise, Bluetooth is limited to headphones, my Bluetooth mouse and Bluetooth gamepad did not work.
I'm a student currently working with a Matrice 100 for a project. I know that currently you can stream to YouTube/Facebook from the mobile app, but is there any way to get the stream directly to computer? I noticed that there was a mini hdmi port on the controller, could you plug a cable into that and a computer to access the stream?
I'd leave this as a comment instead of an answer but I don't have enough reputation.
Do you have an HDMI cable on hand? You could try plugging one end into the hand controller and the other into a laptop.
Also, DJI has a ground control application for the PC (although I don't think they are continuing support for it) that can be used with a bluetooth radio to communicate with and receive video from the aircraft. The application is free to download from the DJI website.
I have an Adafruit Ultimate GPS on a USB serial interface and using the same UWP application can read data just fine on a x86 build on a desktop. When I try a ARM build on the PI3 (remote), everything appears to work, but the serial data read never returns. No timeout, nothing. On the desktop, it starts getting GPS data from the chip right away. I also tried the CustomSerial sample app and am getting the same result. I do have the manifest updated to show serial port access, so don't think that is the problem.
Any ideas would be greatly appreciated. Thanks.
Problem resolved, operator error. Prolific driver not supported, was trying to read data from on-board serial port. Move the GPS sensor to the on-board serial, all is working now. Apologies for the distraction.
Does anyone out there who has developed on a dev board attached to a Mac OSX machine's USB port know how to send AT tty modem commands to the board? Arduino folks? Anyone?
TL;DR
I purchased a development STEVAL-SPBT2ATV2 "USB Dongle for the Bluetooth class 2 SPBT2532C2.AT module", which, according to the docs and spec has "downloaded FW, enabling the user to create a Bluetooth link with simple AT commands."
Which would be great, except all the documentation is only for old MS Windows, and doesn't give any hints on how to program this device from OSX or Linux.
Do I need to install a driver of some sort? Everything I've tried is like talking to a brick wall: I send commands, but nothing comes back from the board.
Things I've tried:
/dev/tty.Bluetooth-Modem already existed. Didn't seem to do anything. I think that's the built-in bluetooth device.
/dev/tty.AmpedUp-AMP-SPP and /dev/cu.AmpedUp-AMP-SPP showed up when I went to "Network -> set up bluetooth device" - which is good (correct device name) but strange, why under network?
Then under Bluetooth I can add a "serial port used to connect to this computer" and get the choice of Modem or RS-232. I guessed Modem.
I really hope I don't have to mess with the /etc/tty files
Nothing. the device never seems to react, or send any data back. I've tried several ways to send data to the device. Silence.
echo "AT+AB GPIOConfig 2 O^M" > /dev/cu.AmpedUp-AMP-SPP # ctrl-v ctrl-m for the ^M
screen /dev/tty.AmpedUp-AMP-SPP
cat /dev/tty.AmpedUp-AMP-SPP
minicom # via brew
chat /dev/cu.AmpedUp-AMP-SPP
From the docs:
Each dongle has the following factory default:
UART: 115200 baud, no parity,1 stop bit,8 data bits
Local name: “Amp'ed UP!’
Class of device: Misc Device
Profile: SPP (serial port profile)
Service name: “AMP-SPP”
Deep sleep: disabled
Page and inquiry scan: 1.28s interval, 11 ms duration
Security: disabled
Bonding PIN: “1234”
Bonding allowed: always enabled
I figured out where I was wayyy off-base with some help from a friend.
I thought that I was trying to establish a OSX->Terminal->Serial (Over USB)->Chip communication channel to program the chip.
When in reality, I was trying to establish a OSX->Terminal->Serial (over Bluetooth->Bluetooth) -> Chip channel to talk to the chip using the existing firmware, which includes enough defaults to have 4 GPIO/LED outputs. The USB only comes in later if I want to change the firmware.
Which means plugging the board into my laptop's USB port isn't necessary and only complicates the issue - better is plugging it into a spare USB charger next to my laptop.
... Which let me narrow down the problem to 2 things:
OSX isn't holding an open bluetooth communication channel to the BT device, so of course I won't be able to talk to it, even if the serial port is set up right
Even if I could talk to it, Apple iOS is so locked down that I won't be able to connect to it from an iPhone/iPad. :(
I build video cameras with a Linux kernel on a TI Davinci dm365 board.
This board supports RNDIS drivers so my camera can be "plug and play" in windows. This is some kind of "Ethernet over USB" network adapter.
Windows load the RNDIS driver usb8023.sys to interact with my hardware.
When I have more than one camera plugged-in, Hell breaks loose and I get a lot of problems, sometimes all my USB ports stop working but most of the time, one of the two cameras stop working.
I've tried importing old drivers, copy usb8023.sys and load a separate driver for each cam with no luck. I've checked and double checked my ip settings.
I downloaded new version of the drivers from Texas Instruments and recompiled everything. I think that the problem was that the gadget pc had OTG (on the go) enabled, which allows it to switch between host and device mode.
It is likely the USB serial numbers for each of the video cameras is identical. Windows in general handles this situation very poorly.
You need to adjust the USB descriptors on each device to be a unique ID.