This board comes with an Xtensa 32-bit LX7 dual-core processor that operates up to 240MHz and has 16MB Flash, 8MB PSRAM and anSD card slot. It supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) with an antenna, and you'll findUART, I2C and GPIO connections on the board with a USB-C port for power.
On the back of the board, you'll find a colourful 2.8" IPS display with 262K colours, a wide viewing angle and a 240 x 320 resolution. There is also an MX1.25 2-pin connector for a 3.7V lithium battery, anRTC battery connector, and 2W 20 x 30 speakers are included.
Please note: this board uses a tiny MX1.25 connector for LiPo power. Most LiPo batteries on the market (including ours) use a larger JST fitting. We do not yet stock batteries with an MX1.25 connector, however, you can customise your battery with one of our 1.25mm pitch cables to make a compatible battery yourself (assuming you have the ability, knowledge and tools to do this safely). If you want to source your own battery to fit inside the case, a battery size of 3.85 x 24 x 28 mm is recommended.
Features
Equipped with high-performance Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency
Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE), with onboard antenna
Built-in 512KB SRAM and 384KB ROM, with onboard 16MB Flash and 8MB PSRAM
2.8" LCD display, 240 x 320 resolution, 262K colour
Adapting UART, I2C and some IO interfaces, full-speed USB port
IPEX1 connector and switching resistor Switching to use an external antenna via resoldering the resistor
TF card slot Supports TF cards up to 16GB
Battery power supply control button A relevant driver program is required
RESET button
BOOT button
USB Type-C port
12PIN multi-functional pin header
I2C header Connecting with internal chip, only supports the I2C peripherals and cannot be mapped to other functions
UART header
MX1.25 battery header MX1.25 2PIN connector, for 3.7V Lithium battery, supports charging and discharging
RTC battery header for connecting rechargeableRTC battery
Speaker header Comes with 8Ω 2W 2030 speaker
Power indicator
Charge indicator Lithium battery charge indicator lights up when charging, and off when fully charged (the light status is uncertain when the battery is not connected)