The serves as the blueprint for one of the most widely used open-source, high-performance Field Oriented Control (FOC) dual-axis motor controllers in robotics history. While officially designated as "Not Recommended for New Designs" (NRND) by ODrive Robotics in favor of the newer Pro, S1, and Micro ecosystems, the v3.6 hardware remains highly relevant. It is heavily utilized in custom DIY builds, quadruped robots, CNC conversions, and commercial clones like the Makerbase MKS ODrive and Flipsky ODESC .
The 5V rail feeds a high-accuracy LDO regulator that outputs 3.3V. This clean, low-noise rail exclusively powers the STM32 microcontroller, logic gates, and sensor interfaces. 2. Microcontroller and Control Logic
Each axis uses six MOSFETs to control the electricity flowing into the motor phases (labeled A, B, and C). 🔍 Current Sensing: Reading the Flow
) to minimize heat generation during high-current operations. odrive 3.6 schematic
For detailed configuration steps, such as setting up for hoverboard motors or CAN communication, refer to the . Regenerative Braking - Page 2 - SimpleFOC Community
The ODrive 3.6 is designed to handle high current and voltage, necessitating a robust power distribution network (PDN) to protect sensitive digital electronics from high-power motor switching noise.
voltage exceeding the configured safe threshold, it outputs a PWM signal to pull the Brake FET gate high. This dumps excess power into the external resistor as heat, clamping the maximum bus voltage. 7. Connectors, Layout Interfaces, and Pinout Mapping The serves as the blueprint for one of
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| Subsystem | Key Components | Core Function | | :--- | :--- | :--- | | | 24V/56V DC input, 5V/3.3V LDOs | Steps down main supply for logic and gate drive. | | Microcontroller (MCU) | STM32F405 | Executes the high-speed FOC algorithm, handles communication. | | Gate Driver | DRV8301 | Converts MCU's PWM signals into high-power gate drives. | | MOSFET Stage | Six N-Channel MOSFETs | The 3-phase H-bridge that actively drives the motor windings. | | Current Sensing | Shunt resistors & Op-Amps | Measures phase currents for the FOC algorithm's torque control. | | Feedback Interface | Encoder/Hall sensor inputs | Provides rotor position and velocity for precise control. | | Communication I/O | USB, UART, CAN, GPIOs | Enables configuration, command, and data exchange with a host. |
Resistor divider networks scale down the voltage on the main VBUScap V cap B cap U cap S The 5V rail feeds a high-accuracy LDO regulator
Before diving into the schematic, it helps to understand the key specifications that define the v3.6's capabilities:
A precise external crystal oscillator provides the clock signal to ensure tight timing synchronization for pulse-width modulation (PWM) generation and communication.