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projects:sma-time [2018/01/01 20:36]
emeryth
projects:sma-time [2018/03/03 11:14] (current)
emeryth
Line 1: Line 1:
 ====== Reverse engineering the SMA-Q2/SMA-Time smartwatch ====== ====== Reverse engineering the SMA-Q2/SMA-Time smartwatch ======
 by [[people:emeryth:start|emeryth]] (emeryth at hackerspace.pl) by [[people:emeryth:start|emeryth]] (emeryth at hackerspace.pl)
 +
 +{{:projects:hsyrenka.jpg?direct&500|}}
  
 ===== Intro ===== ===== Intro =====
-**SMA TIME** also known as **SMA Q2** is a Chinese smartwatch similar in design and features to the Pebble Time. \\ +**SMA Q2** also known as **SMA TIME** 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.+Featuring a color Memory LCD, heart rate sensor and a NRF52832 Bluetooth SoC to drive it all. \\ 
 + 
 +All the documents and interesting things are uploaded here: https://owncloud.hackerspace.pl/index.php/s/1bqTRwMI8XKXGKL
  
 ===== Hardware ===== ===== Hardware =====
 +
 +==== Chips ====
 +
 +^IC ^Description ^ Datasheet ^
 +|NRF52832-QFAAB0| Main SoC| |
 +|LP2985 (?)| 3.3V LDO for everything| |
 +|LP2985 (?)| 3.3V LDO for heart rate sensor module| |
 +|BQ24086 (?)| Battery charger| |
 +|KX022-1020 |3-Axis acccelerometer| |
 +|PAH8002|Heart rate sensor| |
 +|GD25Q16C (?)|16Mbit SPI flash| |
 +|LPM013M126A (?)|176x176 Japan Display Color memory LCD| |
  
 ==== MCU Pinout ==== ==== MCU Pinout ====
Line 36: Line 52:
 |P0.30 | VIBRATOR ON | |P0.30 | VIBRATOR ON |
 | | | | | |
 +|P0.15 | ACCEL INT ? |
 +|P0.16 | ACCEL POWER |
 |P0.17 | ACCEL SDA | |P0.17 | ACCEL SDA |
 |P0.18 | ACCEL SCL | |P0.18 | ACCEL SCL |
Line 41: Line 59:
 |P0.19 | HRM SDA | |P0.19 | HRM SDA |
 |P0.20 | HRM SCL | |P0.20 | HRM SCL |
 +|P0.22 | HRM INT? |
 +|P0.10 | HRM RESET? |
 |P0.31 | HRM POWER ON | |P0.31 | HRM POWER ON |
  
  
projects/sma-time.1514838989.txt.gz · Last modified: 2018/01/01 20:36 by emeryth