Inside the FREE
Removing the back half of the FREE for a peek inside, it is apparent that this is as far as we go to be sure not to damage the PCB connections or the clips used to hold in the lower section. We do obviously see the 3.7V, 300mAh, Great Power, Li-ION rechargeable battery.
The pair of chips here deals with the communications of the CSR Bluetooth IC painted with the blue dot. Finding information on the MX chip is tougher, and I can only guess it is some form of a controller to take the signals from the FREE and codes them for the BT 2.1 transceiver.
The pair of LV165A chips are 8-bit counter shift registers made by Texas instruments. These allow functionality of the switches and buttons used, works in conjunction with the Bluetooth, and speaking of which, there is a decent antenna traced at the bottom of the PCB.
When charging the FREE upon initial setup, the LED next to the A button will be red. When the charge is completed, the light will go off. During use, when you hold in the A button it sets the FREE into pairing mode where the LED will blink fast, and is white. Once paired and ready for use, in gaming mode, the light blinks slowly at about one blink per 3 seconds. In arcade mode, the light will blink faster when paired, at the rate of about one white blink a second.
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