>>so if I understand correctly, as soon as the receiver (AES) is off, the only issue using the dual-strike USB +5v, is that it will power two devices.
I'm not sure if I understand the correlation between the receiver being off and the TX unit being powered by USB. Could you explain what you mean?
The charging IC can use up to 500ma but I have not seen that, I think the absolute worse case would be 250ma -300ma with charging and transmitting. In all of my testing I have never had an over-current situation on a USB port but the most I've had loading the circuit was charging and a Neogeo NGCD joypad.
I wouldn't consider the TX unit a power supply for additional devices nor would I suggest daisy chaining usb devices. This device was designed to be on its own USB connection and it's performance and reliability were tested in this configuration only. You can think of it like daisy chaining your mobile phone and some other current consuming device on the same port and for good reason that's not even physically possible. When devices are designed to consume more current than available on one port they usually provide a secondary USB power connector to eliminate these issue and having the second connector installed would essentially give you this capability. Maybe a future version could incorporate the dual strike functionality to the TX boards to solve issues like this. From a product perspective the RX unit has the ability to do this already but doesn't have battery charging hardware built-in.
I Mike, sorry for the confusion, but I think you answered my question.
Basically, the idea is to have a Joystick I can use on both PC (wired via USB cable and dual-strike) and AES (wirelessly, using your PCB).
As the Morpheus Tx has to be recharged (and anyway will transmit independently that the Rx is on or off) , my plan was to indeed daisy-chain the power: PC--(USB)-->dual-strike/Morpheus
I don't like neither the idea of stressing the PC USB port draining too many mA (Apple doesn't even declared the supported amperage btw).
So, probably the best way to proceed is to remove the dualstrike, having a single Tx on the Joystick, which can recharge trough teh USB cable using a simple iPhone recharger, and assign a dedicated receiver to PC(USB plugged) and another one inside AES
Of course, if using the PC Rx I have to turn off the AES one and viceversa.
in such scenario, I I buy 2 Rx and 1 Tx, do I have to reprogram the Tx or do a special procedure every time I have to move from PC to AES?
Edit:
..or as you suggested, a simple selector on the dual-strike +5V would do the trick, allowing dual-strike OR morpheus mode, but not both at the same time.