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I am working on raspberry pi zero 1.3 , I wanted to add a bluetooth 4.0 on its back side , So Is that possible with zero1.3 to solder on back side to add a hardware(BLE4.0)?

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Well there are add-on boards (HATs) for that purpose, e.g. this or that. Such boards connect to the Pi via the GPIO connector. So pin ordering notwithstanding (e.g. HAT might be on top, so back-to-back might reverse the pin-order) it seems feasible to actually solder some hardware to the Pi to get Bluetooth functionality.

While raspberrypi.org does not provide an official schematics for the Pi Zero there are some results from reverse engineering known. This site lists the following test pin functions:

PP Description
PP1 USB +5V Input
PP6 GND
PP8 3.3V
PP14 SD CLK
PP15 SD CMD
PP16 SD DAT0
PP17 SD DAT1
PP18 SD DAT2
PP19 SD CD
PP22 USB D+
PP23 USB D-

So most of them wont get you far. However it is possible to solder an USB Bluetooth dongle directly to the USB data lines there. Note that you cannot do this and use the on-board USB connector simultaneously.

  • and what about the pins at back pp1 and pp6 except from the gpio's? how they can be utilized if wanted to use one of them? – AJAY DARGU Oct 24 '16 at 12:23

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