So i got an arduino controlling a 5V relay that switches the Power to an USB Port on/off.
The Device that will run via that USB port is an IR controlled LED Strip that is really cheap. Its just an 2m strip with an IR reciever and a USB Plug for its power.
I lost the Remote and common IR signals aren't used by it. However its already set in the Decent Orange i like it to have. So i can just plug/unplug it and it always lights up in that desired color and Brightness.
To let my Arduino with its RTC control when it is being switched ON/OFF i got an Relay and all set up. However here comes that weird Problem i really cant describe better as following.
When i plug it into just the 5V and GND of my Test Circuit (Basically just delivering 5V and GND connected to an USB Female port) and switch it it just lights up Bright White not Orange.... But when i plug it back into the USB Hub (or Phone charger that has a Usb plug) it lights up Orange again.
What is missing that it basically doesnt light up orange?
I mean the USB charger is just delivering Power too... and when i plug in Power and GND of my test circuit its just White.
On those 2 Data lines of USB is nothing happening cause its communication runs over its integrated IR reciever and ICs... or is there some kind of ... "Idle signals" that for some reason the Strip depends on?