Paul's Watch Mainboard REV05

Description

Introducing the mainboard of Paul's Watch Dev Kit, a powerful platform designed for creativity and innovation in your personal smartwatch development. At its core, the board features an ESP32 Pico V3-02 with 2MB of PSRAM and 8MB of flash memory, providing robust performance for your projects. Equipped with an array of sensors—including an accelerometer, barometer, thermometer, hygrometer, magnetometer, compass, altimeter, and pedometer—this mainboard empowers you to create a truly personalized smartwatch experience.

Versatile in design, it can accommodate either an RGB display for vibrant visuals or an LCD display for extended battery life and an always-on feature. Plus, with the option to extend functionality through a waterproof barometer, you can build a durable, water-resistant case that meets your adventurous spirit.

Paul's Watch Dev Kit invites you to push the boundaries of wearable technology. Whether you're an enthusiast or a seasoned developer, this mainboard enables you to innovate and customize every aspect of your smartwatch ideas, making it uniquely yours. Unleash your creativity and redefine your wearable experience!

Specification

• MCU: ESP32 Pico V3-02 (8mb ROM, 2MB PSRAM)
• Supported Displays (not included!):
  • GC9A01 16bit 240x240px (RGB)
  • LS012B7DH02 1bit 240x240px (always on)
• Onboard Devices
  • BMA400 (Acceleromter, Pedometer, 1 Interrupt on IO36)
  • BME280 (Baromter, Hygrometer, Thermometer)
  • QMC5883 (Magnetometer)
  • DS3231MZ (RTC, 1 Interrupt if using RGB display)
  • AT24C512 (512kbit EEPROM)
  • DRV2605L (Vibration Motor driver with integrated vibration patterns, Motor is not included!)
  • MAX17043 (LiPo Fuel Gauge, 1 Interrupt on IO39)
  • MCP73831 (LiPo 4.2V Charger, set to 200mA via R5)
  • MCP1700 (low power LDO for to extend standby)
  • ME6211 (500mA LDO when using WiFi, controlled via IO12)
  • TPS2115A (Power switch, limits power consumption to 1A, 5Vin detection via IO37)
• Optional Devices
  • MS583702 (waterproof Barometer on the bottom, not included)
  • Additional pads on display connections to repurpose if not used