Specifications for the T-Watch 2020 V3 from Lilygo
(EN google-translate)
(PL google-translate)
- Microcontroller chip used: ESP32-D0WDQ6-V3 with WiFi and Bluetooth
- Program memory: FLASH 16MB
- Working memory: SRAM 520 kB SRAM (cache / faster) / PSRAM 8MB (slower)
- Display: OCA 40mm x 40mm, color, capacitive touch screen, resolution: 240x240 pixels.
- CPU clock frequency: 240 MHz
- Operating voltage: 3.3 volts
- Weight: 56.8 grams
- Dimensions: 47 mm x 40 mm x 13 mm
- Battery life (LiPo 340 mAh) according to manufacturer: 24 hours / 80 hours standby
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The assignment of the various sensor designations to their functions is not always easy
to recognize in the examples. Here is a list of the sensor identifiers and their respective functions:
Core T-Watch sensors
- BMA423: A three-axis accelerometer for motion tracking and step counting.
- PCF8563: A real-time clock (RTC) for keeping track of time.
- FT6236U: The chip that handles touch input on the capacitive touchscreen.
- ST7789V: The driver for the 1.54-inch LCD display.
- AXP202: A power management unit that handles charging and power distribution.
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Additional onboard and optional sensors
- Microphone: Many models include an integrated microphone, sometimes using a PDM microphone.
- MAX98357A: An amplifier for the speaker, found on some models.
- DS18B20: An external waterproof temperature sensor that can be connected to the watch.
- SHT30: An external temperature and humidity sensor that can be connected to the watch.
- BH1750: A light sensor, found on some models.
- DHT11: A temperature and humidity sensor that can be connected to some models, like the T-Higrow.
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