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Lilygo T-Watch K210: A cheap base for a smartwatch with a display, camera and Wi-Fi

Lilygo T-Watch K210: A cheap base for a smartwatch with a display, camera and Wi-Fi. (Image source: Lilygo)
Lilygo T-Watch K210: A cheap base for a smartwatch with a display, camera and Wi-Fi. (Image source: Lilygo)
The TTGo T-watch K210 could be the basis for a smartwatch project, with Lilygo incorporating a display, a camera and Wi-Fi. The K210 supports Bluetooth 4.2 and has a USB Type-C port, too.
Alex Alderson,

The Lilygo TTGo T-Watch K210 is, in a sense, a starting point for a smartwatch project. The ESP32-based device boasts plenty of hardware, with Lilygo having included a 1.54-inch touchscreen display, 16 MB of QSPI flash storage and a camera among other components. However, please keep in mind that the K210 does not include a battery, which is a factor that we would need overcoming if you want to use the device without it being connected to the mains. The K210 weighs around 60 g and is 46.43 mm thick, for reference.

Lilygo has based the K210 on an ESP32-PICO-D4 chip, which the company has complemented with 4 MB of RAM. The device also supports up to 802.11 b/g/n Wi-Fi at a maximum transfer speed of 150 Mbps and Bluetooth 4.2. Hence, the K210 should be programable without needing to be connected to your computer via a USB cable.

An AI co-processor joins the ESP32 chip. Lilygo has opted for a Kendryte K210 RISC-V processor, which includes two cores. The 64-bit co-processor also has an FPU and 8 MB of SRAM. Additional sensors and actuators can be connected to the T-Watch K210 too. The device runs on FreeRTOS and is available to order from AliExpress or Amazon. The full list of hardware that Lilygo has included in the T-Watch K210 is as follows:

Lilygo TTGo T-Watch K210
Wireless SIP ESP32-PICO-D4
ESP32 Wi-Fi & Bluetooth WiSoC
4 MB flash
AI Processor Kendryte K210 RISC-V (Dualcore)
64-bit with FPU
8 MB SRAM
Display 1.54-inch capacitive LCD 8080 (touchscreen)
Camera 2 MP OV2640 sensor (adjustable lens)
Audio MAX98357 audio codec
CVSD & SBC audio encoding
built-in microphone
Connectivity Wi-Fi 4 (802.11b/g/n) - 2.4 GHz
Bluetooth 4.2 BR/EDR/BLE
Storage 16 MB QSPI flash
MicroSD card reader
Debugging USB Type-C port via CP2104
Expansion UART, SPI, I2C, PWM, I2S, I2C grove connector
I/O Voltage - 3.3 V/1.8 V
Sensors MPU6050 six-axis sensor with built-in step counting algorithm, activity recognition/tracking
PIR AS312 motion sensor
Misc Power and boot buttons
RTC
26 MHz crystal
Power Supply 5 V DC/1 A DC input
AXP202 PMIC
Operating voltage – 2.7 V-3.6 V
Power Consumption – 70 mA to 170 mA at 3.3 V
Dimensions & weight 42.72 x 19.87 x 46.43 mm
60 g
Temperature range 40 °C ~ + 125 °C
(Image source: Lilygo)
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 06 > Lilygo T-Watch K210: A cheap base for a smartwatch with a display, camera and Wi-Fi
Alex Alderson, 2020-06- 6 (Update: 2020-06- 6)
Alex Alderson
Alex Alderson - News Editor - @aldersonaj
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.