I want to automate a personal workflow that is based on camera usage on my MBP. Basically I want to know if any of the cameras (built-in or USB) has been turned on or off, so I can run a program o...

Until now I have developed several programs to use in my Raspberry Rpi2 and RPi3 as BLE perifpherals using bleno. Can anyone tell me if there is something alternative to Bleno, in Python or even be...

I am trying to advertise in NEXUS 9 and getting the error of ADVERTISE_FAILED_DATA_TOO_LARGE. It was working perfectly fine when I was adding the service after successfully advertising but if I add...

We are developing a BLE sensor Peripheral to work with an iPad, that requires the following throughput of data on the BLE notification characteristic (no acknowledge) using a TI CC2541 BLE module a...

I'm looking to control a mains powered light from a simple relay switch connected via USB to the computer. The relay switch isn't even a USB device, it's just a simple switch that requires the USB...

I'm currently doing some research about ARM's TrustZone, e.g. here: ARM information center. As far as I understand, with TrustZone a secure environment based on the AMBA AXI bus can be created. O...

The Low Energy Bluetooth spec does not say much about whether peripherals can connect to more than one central at a time, but my experience testing tells me that they cannot. Because my applicati...

My company writes software that installs on client machines to perform point-of-sale transactions. The software interfaces with a variety of external peripherals (receipt printers, bar code scanner...

I'm developing a system which has a BLE device (TI CC2540) as Central and an iOS app on iPhone4S as Peripheral. Everything works fine except 1 function I need: white-list (filtering) advertising de...

I'm writing an app using CoreBluetooth in iOS8 that detects and connects to other phones using the app. I'm trying to figure out the best way to be able to create a connection while both apps are b...

Note: This is Not the same thing that has been asked many times. Yes I have read the many many posts about casting to void. None of those questions resulted in the answer I suspect is true here. ...

As we know, iOS 6 support running devices (iPhone 4s and above, and new iPad) as a BLE peripheral. There is a demo in WWDC 2012 Session 705 called "advanced core bluetooth". I asked for the source ...

I have two peripheral devices, say device1 & device2 and one Android device for central role. Android can connect to both by BluetoothDevice.connectGatt() method with autoConnect = false. Prob...

Is there any possibility to have both peripheral and central mode available at the same time? In that case we are advertising as peripheral while listening for advertisements of other devices. Tha...

I'd like to cycle (simulate unplug and re-inserting) a USB device (modem) after a certain event has fired. I found a sample on codeproject: http://www.codeproject.com/KB/system/usbeject.aspx T...

What are the various ways to access devices on client PC - a barcode reader, a scanner, etc. - from a browser? I realize my users may need a plugin. These devices may have an API that is specific t...