Hive Nano v2 Hub Teardown

Much like its predecessor the Hive Nano v2 is simple but sleek in design, its casing is slightly larger at 9.5 x 9.5 x 2.5cm. The hub has 3 LEDs on the front right above a Hive logo. Along the top side of the hub there is a RJ-45 Ethernet port, a 9v AC plug, a small reset button and a mystery unused USB socket covered by a small blanking plate.

Inside the Hub

The inside of the Nano v2 is slightly more complex than the v1 with a PCB hosting 2 smaller wireless daughter cards. There are again a couple of pin headers which may be used for console or debug connectivity. The following are a few photos of the inside of the hub:

The Hive Nano V2 Hub with 3 status LED’s (Green, Amber, Red).
Inside the Hive Nano 2 Hub.
Showing Ethernet plug, USB port and 2 mini daughter boards:
Mid-left: Wireless controller.
Bottom-left: ZigBee chip.
Texas Instruments MPU.

Also showing 4 pin header to the left (I soldered the header pins on here to see if I could read it with a TTL serial cable – no luck yet).

Unused 10-pin header (possible serial port?).

Also close up of Sigma ZigBee module.

Unused 4-pin header. (I soldered these header pins on here). Pin 1 is the left most pin.

List of Chips

While opened up I have also taken an inventory of the chips in the Nano v2. I have also attempted to look up the data sheets for each chip to see if I could work out any further information.

Chip Model / Serial Numbers Notes
SEC528

K4B4G1646E BCK0

JRD5741JC

Samsung SDRAM (4Gb E-die DDR3L SDRAM)

[Data Sheet]

AM3352BZCE30

5IALLCW G1

962B ZCE

Texas Instruments (MPU ARM® Cortex®-A8 32‐Bit RISC Processor)

[Data Sheet]

SEC534 BO31

KLM4G1FEPD

S2WRKAHHS

Samsung DRAM?
SD3503A-GNE3

A702431.1

1522 TWN

ZigBee Sigma (Serial interface modem SoC)

[Data Sheet]

RF6555

1529

F14QP Z2

Wireless RFMD (Front End Module (FEM) for WiFi and ZigBee applications.

[Data Sheet]

57AKY7G3

83848JSQ

‘S’ Unknown?

On the rear of the circuit board.

For the Nano v2 there appears again to be a spare 4 pin connector on the circuit board (which I have soldiered a header block onto), but by using the same cable and pin configuration as the Nano V1 above I have, as of yet, not been able to achieve any results. There is also another unused 10 pin header on the Nano 2’s circuit board (see photos above) but again I have not been able to work anything out.

Aside from the 4-pin header there is another, currently redundant, component of interest… a unused female USB-A port hidden by a small plastic cover, it is not mentioned in any of the Hive documentation but is presumedly there for possible future connectivity, data logging, debugging or firmware updates? I have tried plugging a cable into it and it does provide power which at the very least could be used to power or charge another USB device.

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