PineTime
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PINE64 SmartWatch "PineTime"
The PINE64 SmartWatch, dubbed "PineTime", is a product of a community effort for an open source smartwatch in collaboration with wearable RTOS and Linux app developers & communities.
PineTime development has been broken down into two distinct phases:
- Phase One - PineTime Dev Kit Project on October 2019
- Phase Two - Introducing the PineTime smartwatch around Q1 2020, depending on development results in Phase 1.
PineTime Concept Photo
PineTime Case and Charging Cradle Photos
PineTime DevKit internal Photos
Watch Information
- LAUNCH:
- Announced: Tweet on 13 September 2019
- Devkit Release: October, 2019
- Expected Release: Q1/Q2 2020, pending on development result
- Availability: at least 5 years
- BODY:
- Dimensions: 37.5mm x 40mm x 11mm
- Weight: 38 grams
- Build: Zinc Alloy and Plastic
- Environmental Rating: IP67 (waterproof to 1 meter of immersion; not applicable to devkits)
- DISPLAY:
- Type: IPS capacitive touchscreen, RGB 65K colors
- Size: 1.3 inches
- Resolution: 240x240 pixels, 1:1 ratio
- PLATFORM:
- OS: Various open source RTOS such as Zephyr, FreeRTOS, Mbed, Mynewt, or NuttX
- SoC: NORDIC Semiconductor nRF52832 (final product may use nRF52840)
- CPU: 64MHz ARM Cortex-M4F
- MEMORY:
- Internal: 512KB Flash, 64KB RAM (nRF52840: 1 MB flash, 256KB RAM)
- Additional: SPI NOR 8 MB Flash
- COMMUNICATION:
- Bluetooth 5 (including Low Energy)
- FEATURES:
- Sensors: Accelerometer, PPG Heart Rate Sensor
- Actuator: Vibrator
- BATTERY:
- Built-in LiPo 170-180mAh battery
- Charging: Proprietary 2pin 5V 500mA, USB type A plug
- PRICE:
- USD $22.99 (PineTime pebble and charging cradle, based on phone on PineTime devkit hardware configuration)
- USD $2 and up (20mm straight generic wrist band: silicone, NATO, Milanese steel, leather, and etc)
PineTime Schematic and Certifications
- PineTime Main Board Schematic:
- PineTime Certifications:
- not yet available
PineTime DevKit SWD Probe
- PineTime SWD probe pinout definition:
PineTime SWD Probe Usage Method
Slightly bend or zig-zag the probe pins to the left and right to strengthen contact to the SWD pins on the dev kit.
Note: The color coding on the SWD probe wires is random and meaningless.
Driving the peripherals
Display
The display is driven using the ST7789 display controller. Use the following pins to drive the screen:
| PineTime pin | ST7789 pin |
|---|---|
| LCD_SCK (P0.02) | SPI clock |
| LCD_SDI (P0.03) | SPI MOSI |
| LCD_RS (P0.18) | Clock/data pin (CD) |
| LCD_CS (P0.25) | Chip select |
| LCD_RESET (P0.26) | Display reset |
| LCD_BACKLIGHT_{LOW,MID,HIGH} | Backlight (active low) |
Notes:
- Chip select must be held low while driving the display. It must be high when using other SPI devices on the same bus (such as external flash storage) so that the display controller won't respond to the wrong commands.
- SPI must be used in mode 3. Mode 0 (the default) won't work.
- LCD_DISPLAY_* is used to enable the backlight. Set at least one to low to see anything on the screen.
Datasheets for Components
- NORDIC SoC information:
- PMU (Power Management Unit) information:
- SPI Flash information:
- LCD Panel:
- Touchpad information:
- Sensor:
