projects:sma-time
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Table of Contents
Reverse engineering the SMA-Q2/SMA-Time smartwatch
by emeryth (emeryth at hackerspace.pl)
Intro
SMA TIME also known as SMA Q2 is a Chinese smartwatch similar in design and features to the Pebble Time.
Featuring a color Memory LCD, heart rate sensor and a NRF52832 Bluetooth SoC to drive it all.
Hardware
MCU Pinout
| Pin | Description |
|---|---|
| P0.02 | LCD SCLK |
| P0.03 | LCD SI |
| P0.05 | LCD SCS |
| P0.06 | LCD EXTCOMIN |
| P0.07 | LCD DISP |
| P0.04 | Battery voltage measurement (x0.25 divider) |
| P0.08 | BACKLIGHT ON |
| P0.09 | BUTTON BACK |
| P0.27 | BUTTON UP |
| P0.28 | BUTTON OK |
| P0.29 | BUTTON DOWN |
| P0.11 | FLASH MISO |
| P0.12 | FLASH CS |
| P0.13 | FLASH MOSI |
| P0.14 | FLASH CLK |
| P0.25 | UART RX |
| P0.26 | UART TX |
| P0.30 | VIBRATOR ON |
| P0.17 | ACCEL SDA |
| P0.18 | ACCEL SCL |
| P0.19 | HRM SDA |
| P0.20 | HRM SCL |
| P0.31 | HRM POWER ON |
projects/sma-time.1514838989.txt.gz · Last modified: 2018/01/01 20:36 by emeryth