Amazon Echo Button (H5V83Y)

Amazon Echo Button (H5V83Y)
Availability: now

FCC approval date: 16 October 2017
Country of manuf.: China

FCC ID: UUU-4612

BT WI1 chip 1: Cypress CYW20735

Categorized as: Bluetooth button

Flags: Bluetooth BR/LE

OUI: none specified

Bluetooth Button

Product page

Part of the Alexa Gadgets product line.

Power: 1.5V (|| 2x AAA battery)

• Amazon Echo Button (H5V83Y)

FCC ID: UUU-4612 (10/16/2017)

- Amazon Fulfillment Services

• Amazon Echo Button on Engadget

Teardown

• Amazon Echo Button Teardown on MPetroff (internal images)

Bluetooth SoC: Cypress CYW20735 (Broadcom BCM20735)

Bluetooth Low Energy Single Chip

SWD header

(TMF1 through TMF12 accessible through battery compartment.)

• TMF3 = BATT_VDDC (+1.5V)
• TMF1 = VCC (+3.3V)
• TMF2 = GND
• TMF7 = Button
• TMF8 = SPI_MOSI
• TMF9 = UART_TXD
• TMF10 = UART_CTS_N
• TMF11 = UART_RXD
• TMF12 = UART_RTS_N
• TMF22 = VCC/LHL VDDO
• TMF4 = ?
• TMF5 = ?
• TMF6 = ?

J2 - UART: https://www.instagram.com/p/Bpw8qF4Hboy/

     °
VCC ©  © CTS_N
TXD ©  © RXD
GND ©  © RTS_N
    °  °

• Amazon Echo Button on Mikrocontroller forums

RGB-LED: P29 (blue), P28 (green), P27 (red)

[P7]     [Vcc]     [P11] (Button)
 J3 [P32]  J1 [P10]     [GND]

J1 - Vcc/P10/P11/GND

J2 - UART (6-pad header)

J3 - P7/P32

J4 - +BATT (+1.5V)

J5 - -BATT (GND)

J6 - Button

J7 - Button

J8 - Button

Linux (BlueZ 4.101):

$ sudo hcitool info xx:xx:xx:xx:xx:xx
Requesting information ...
    BD Address:  xx:xx:xx:xx:xx:xx
    Device Name: EchoBtn2V8
    LMP Version:  (0x8) LMP Subversion: 0x4118
    Manufacturer: not assigned (305)
    Features page 0: 0xbf 0x06 0x46 0x78 0x58 0x1e 0x5b 0x87
       <3-slot packets>  <5-slot packets>  <encryption>  <slot offset> 
       <timing accuracy>  <role switch>  <sniff mode>  <RSSI> 
       <channel quality>  <paging scheme>  <power control> 
       <enhanced iscan>  <interlaced iscan>  <interlaced pscan> 
       <inquiry with RSSI>  <AFH cap. slave>  <AFH class. slave> 
       <LE support>  <sniff subrating>  <pause encryption> 
       <AFH cap. master>  <AFH class. master>  <extended inquiry> 
       <LE and BR/EDR>  <simple pairing>  <encapsulated PDU> 
       <non-flush flag>  <LSTO>  <inquiry TX power>  <EPC> 
       <extended features> 
    Features page 1: 0x0f 0x00 0x00 0x00 0x00 0x00 0x00 0x00
    Features page 2: 0x40 0x18 0x09 0x00 0x14 0x12 0x09 0x00

• Amazon Echo Button Teardown on Medium

Communications

Bluetooth serial port.

Message format (from Button)

Initial connection - 86 bytes.
Offset 8 [16 bytes, ASCII]: Button identifier string (printed on bottom of button).

Button event - 40 bytes.
Offset 8 [16 bytes, ASCII]: Button identifier string (printed on bottom of button).
Offset 39: Button state.  0xC0 - press.  0xC1 - release