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Maixduino AI Development Board（OV2640）K210 RISC-V AI+lOT ESP32
Based on Kendryte K210 RISC-V AI processor, Maixduiono AI development board comes with MI AI module and ESP32 module for WiFi and Bluetooth connectivity i...
Based on Kendryte K210 RISC-V AI processor, Maixduiono AI development board comes with MI AI module and ESP32 module for WiFi and Bluetooth connectivity in Arduino UNO form factor.
K210 comes with dual-core processor chip with independent FPU, 64 bits CPU bit width, 8 MB on-chip SRAM, 400 adjustable nominal frequency, and double precision FPU supporting multiplication, division and square root operation. Besides, Maixduino AI Development Board is equipped with neural network hardware accelerator KPU, voice processing unit (APU), programmable IO array (FPIOA/IOMUX) and Fast Fourier Transform Accelerator. In the AI processing, K210 can perform operations such as convolution, batch normalization, activation, and pooling. At the same time, the pre-processing of voice direction scanning and voice data output can also be performed.
The on-board wireless module of the product is the ESP32-WROOM-32 with dual-core ESP32 Xtensa LX6 processor, supporting 2.4GHz 802.11.b/g/n WiFi 4 and Bluetooth 4.2 LE connectivity. Besides, it has DVP camera connector, LCD display connector, built-in MEMS microphone, TM8211 I2S audio DAC, 3W power amplifier, USB 2.0 Device type C port for powering and programming via dual channel CH522 chip to support for both K210 and ESP32, Arduino UNO compatible headers with digital I/Os / PWM, I2C, UART, and 6 analog inputs.
Application: smart home(Robotic vacuum cleaner and Smart speaker), medical device, industry 4.0, agriculture and education.
Maixduino Development Board and OV2640 Camera are included in the package.
Note: The shape and pins are compatible with Arduino UNO R3 but the voltage level is not compatible, which requires great attention, otherwise the board can be damaged. Maixduino supports 3.3V and 1.8V levels, and the pins are divided into several BANKs, each BANK can be set to a voltage of 1.8V or 3.3V by software, However, these pins are not 5V tolerated. Therefore, when using the peripheral device of Arduino, be careful not to short the 5V to the pin or RST (1.8V) pin.
FEATURES
- CPU: RISC-V Dual Core 64bit, built-in FPU, 400MHz standard frequency (overclockable)
- Built-in neural network processor
- OV2640 Camera: 200W pixel 24P camera
- Connector: compatible with Arduino interface, TF card slot, speaker port
- Wireless: support 2.4G 802.11.b/g/n and Bluetooth 4.2
- Audio: MEMS microphone, 3W speaker output
- 8 Bit (256 levels) adjustable color, 5Bit (32 levels) brightness adjustment
- DVP Camera Interface: 24P 0.5mm FPC connector, support 0V2640, 5640, 0V7740, etc.
- LCD Interface: 24P 0.5mm FPC connector; support 8bit MCU LCD
- ESP32 Module: support 2.4G 802.11.b/g/n
802.11 n (2.4 GHz) speed reaches 150 Mbps
Bluetooth v4.2 full specification, including traditional Bluetooth (BR / EDR) and Bluetooth Low Energy (BLE)
- Development Environment: support for Arduino IED, MaixPy IDE, OpenMV IDE
SPECIFICATION
- Dimension: 68x54mm/2.68 x2.13”
- Power Input: USB Type-C (6~12V)
- Temperature Rise: <20K
- Operating Temperature: -30~85ºC
- MCU: ESP8285
- Wireless Standard: 802.11 b/g/n
- Frequency Range: 2400Mhz~2483.5Mhz
- Transmit Power: 802.11.b:+15dBm
802.11.g:+10dBm(54Mbps)
802.11.n:+10dBm(65Mbps)
- Wireless Connector: IPEX 3.03.0mm
- WiFi Mode: Station/SoftAP/SoftAP+Station
DOCUMENTS
Jargon buster
Plain-language definitions for the technical terms used above.
- BLE
- BLE stands for Bluetooth Low Energy, a Bluetooth mode designed for lower power use and modern phone compatibility. It matters because BLE support can make the module easier to use with Apple devices and battery-powered projects, though it may behave differently from classic serial Bluetooth.
- DAC
- A digital-to-analogue converter turns numbers from the microcontroller into a real analogue voltage. It matters if you want to generate simple waveforms, audio-style signals, or variable control voltages rather than just on/off outputs.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- FPC
- FPC stands for flexible printed circuit, a flat flexible cable or connector style often used where space is tight. It matters because this breakout needs the correct pin count and pitch FPC cable to connect reliably to the display or high-speed interface.
- FPU
- A floating-point unit is hardware inside a processor that speeds up calculations with decimal numbers. This helps when projects use maths-heavy tasks such as motion sensing, filtering sensor readings, or audio processing.
- Headers
- Rows of metal pins used to plug a module into a breadboard or connect it with jumper wires. Pre-soldered headers make the module easier to use straight away without needing to solder the pins yourself.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2S
- I2S is a digital audio interface used to send sound data between chips, such as from a microcontroller to an audio amplifier or DAC. It matters if your project needs cleaner digital audio output than a basic buzzer or PWM signal can provide.
- IDE
- Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
- LCD
- LCD stands for liquid crystal display, a screen technology that uses a backlight and liquid crystals to show images or text. It matters because LCD modules usually need a display driver and enough controller pins or a bus interface to send image data.
- MEMS microphone
- A tiny microphone made using micro-electromechanical systems, the same style of miniature manufacturing used in many phone sensors. It lets the board detect sound without needing an external microphone, which is useful for noise-reactive projects and simple audio input.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- RISC-V
- An open processor architecture used inside some modern microcontroller chips. It matters because it affects the software tools, performance, and low-power features available for developing projects on the board.
- RST
- Short for reset, a control pin used to restart or initialise a device from a microcontroller. It matters because this sensor requires the RST pin to be connected for some communication setups.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
- USB Type-C
- A reversible USB connector used for power and data on many modern devices. On this kit it indicates an alternate 5V power input, which may be useful for setup or charging without the solar panel.
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