Overview
Aotenjo Master is a control hub designed to work with Aotenjo One, providing advanced features and capabilities for complex automation tasks. It is ideal for applications requiring multiple motor control and extensive connectivity options.
Key Features
- Centralized Motor Control: Manage and send commands to multiple individual motor control boards, such as Aotenjo One units, across a CAN FD bus for fast and reliable communication.
- Switchable CAN Termination: An onboard CAN termination SPDT switch allows you to manually enable or disable bus termination. Enable termination when the Master is located at the end of the CAN network, or disable it when the Master is positioned in the middle of the bus.
- Flexible CAN Network Placement: Unlike previous versions, which were designed primarily to operate at the end of the CAN network, v2.3 can be conveniently placed at either end or in the middle of the CAN bus.
- Dual CAN & Power Connectors: Two JST PH CAN connectors and two JST XH power connectors make it easy to continue the CAN bus and power wiring through the Master, simplifying daisy-chained and multi-controller installations.
- PC Connectivity & Command: Connect directly to your PC via USB Type-C to send motor commands and data and receive feedback.
- Powerful Microcontroller: Driven by the STM32G431CB (170 MHz, 128 KB Flash, 32 KB RAM), providing ample processing capability for motion control and automation applications.
- Extensive Peripheral Support: Integrate sensors and other components using 2x SPI, 2x I2C, and 2x UART interfaces.
- VSENSE Voltage Monitoring: Monitor onboard VCC voltage in real time using the STM32G431's ADC, enabling power monitoring and diagnostics.
- Intuitive User Feedback: Equipped with multiple user-configurable LEDs (Blue, Green, Red, and Yellow), dedicated user buttons, and a power indicator LED.
- Simplified Power Distribution: Two JST XH connectors allow power to be routed through the Master to downstream motor controllers such as Aotenjo One, simplifying wiring in multi-board systems.
Aotenjo Master v2.3 can be used at the end of the CAN network or in the middle, thanks to its switchable CAN termination and flexible placement options.
Technical Specifications
MCU: STM32G431CBU6 (170MHz, 128KB Flash, 32KB RAM)
CAN Transceiver: TCAN3413 (3.3V operation)
Voltage Input: 8-35v (via terminal block KF301-2P for main power to Aotenjo Master)
CAN Termination: Switchable onboard termination via SPDT switch
Communication Interfaces:
- CAN FD: 1x JST PH connector (up to 8Mbps)
- USB: 1x USB Type-C port (for PC communication)
- SPI: 2x interfaces
- I2C: 2x interfaces
- UART: 2x interfaces
- Power Output for Motor Controllers: JST XH x 1 connector (for powering downstream Aotenjo One or other compatible boards, enabling daisy-chain power distribution)
Power Distribution: 2x JST XH connectors for routing power to downstream Aotenjo One or other compatible boards
User Interface: 2x User Buttons, 1x NRST Button (can be configured as user button)
Indicators: 1x Blue LED, 1x Green LED, 1x Red LED, 1x Yellow LED, 1x Red Power Indicator LED
Mounting: 4 x M3 holes
- Proper CAN bus termination is required for reliable communication. When using the Master in the middle of the network, disable its onboard termination and ensure that termination is provided at both physical ends of the CAN bus.
- To program this board, you will need an ST-LINK V2 Clone (or compatible programmer).