Humanoid Robot Electronics

Lesson 1 • Circuit Diagram Reading and Standards

Teaches schematic symbols, reference designators, and wiring diagram conventions used in robotics. Enables accurate interpretation of manufacturer documentation.

Lesson 2 • Basic Measurement and Test Equipment

Introduces multimeters, oscilloscopes, and logic analyzers for robot electronics diagnostics. Connects measurement skills to fault-finding in later chapters.

Lesson 3 • Electrical Fundamentals Review

Covers voltage, current, resistance, and power relationships essential for robot electronics. Establishes the quantitative baseline used throughout the course.

Lesson 4 • Humanoid Robot Architecture Overview

Maps the major electronic subsystems of a humanoid robot and their interdependencies. Provides context for every subsequent technical topic.

Lesson 1 • Power Distribution Architecture

Designs multi-rail distribution networks with fusing, ORing, and hot-swap control. Ensures each subsystem receives clean, protected power.

Lesson 2 • Battery Technologies and Selection

Compares lithium-ion, lithium-polymer, and solid-state chemistries for humanoid applications. Guides capacity and discharge-rate selection based on load analysis.

Lesson 3 • DC-DC Conversion and Regulation

Covers buck, boost, and buck-boost converter topologies used to supply regulated rails. Students calculate component values and evaluate efficiency trade-offs.

Lesson 4 • Battery Management Systems

Explains cell balancing, state-of-charge estimation, and protection circuits in BMS design. Directly supports safe, long-life battery operation in the robot.

Lesson 1 • Field-Oriented Control Electronics

Covers current sensing, Clarke-Park transforms, and PWM generation for FOC of BLDC motors. Links hardware design to closed-loop torque control performance.

Lesson 2 • H-Bridge and Gate Driver Circuits

Explains H-bridge topology, bootstrap gate drivers, and dead-time control for motor drives. Students design safe switching circuits avoiding shoot-through faults.

Lesson 3 • Motor Types in Humanoid Robots

Surveys brushed DC, brushless DC, stepper, and series-elastic actuator technologies. Establishes selection criteria linking motor type to joint requirements.

Lesson 4 • Servo Drive Interfaces and Protocols

Examines RS-485, CAN, and EtherCAT interfaces used to command smart servo modules. Enables integration of commercial servo drives into robot joint networks.

Lesson 1 • Proprioceptive Sensor Technologies

Covers encoders, IMUs, torque sensors, and force-torque wrists used for body-state estimation. Establishes the sensor layer that feeds motion control algorithms.

Lesson 2 • Exteroceptive Sensor Interfaces

Addresses cameras, LiDAR, depth sensors, and microphone arrays for environmental perception. Students wire and configure each sensor type to a processing board.

Lesson 3 • Analog Signal Conditioning

Designs amplifier, filter, and reference circuits that prepare analog sensor outputs for ADC conversion. Directly reduces noise and offset errors in sensor data.

Lesson 4 • Analog-to-Digital Conversion

Explains ADC architectures, resolution, sampling rate, and input multiplexing for robot sensors. Students match ADC specifications to sensor bandwidth requirements.

Lesson 1 • Real-Time Communication Buses

Designs CAN FD, EtherCAT, and UART networks linking compute nodes to actuator and sensor boards. Ensures deterministic latency across the robot's electronic network.

Lesson 2 • Hardware Abstraction and Boot Firmware

Introduces bootloaders, hardware abstraction layers, and firmware update mechanisms for robot compute boards. Bridges hardware design to software integration tasks.

Lesson 3 • Microcontroller Selection and Configuration

Compares ARM Cortex-M, RISC-V, and DSP cores for joint-level control tasks. Students evaluate clock speed, peripherals, and memory against control loop requirements.

Lesson 4 • FPGA in Robot Control Loops

Explains FPGA use for deterministic PWM generation, encoder counting, and custom peripherals. Students implement simple logic blocks and connect them to the main processor.

Lesson 1 • PCB Stack-Up and Layer Planning

Selects layer counts, dielectric materials, and copper weights for mixed-signal robot boards. Directly affects impedance control and EMI performance.

Lesson 2 • Schematic Capture Best Practices

Establishes hierarchical schematic organization, symbol libraries, and net naming for complex robot boards. Reduces errors before layout begins.

Lesson 3 • High-Speed Signal Routing

Applies length matching, differential pair routing, and via stitching for USB, Ethernet, and MIPI signals. Prevents signal integrity failures in high-speed robot links.

Lesson 4 • Design for Manufacture and Test

Covers panelization, fiducial placement, test point strategy, and DFM rule compliance. Ensures boards are producible and testable at volume.

Lesson 1 • Safety Monitoring and Watchdog Circuits

Implements hardware watchdogs, voltage supervisors, and current monitors that detect and respond to faults. Ensures the robot enters a safe state upon anomaly detection.

Lesson 2 • Hazard Analysis and Risk Assessment

Introduces FMEA, FTA, and HAZOP methods applied to robot electronic subsystems. Produces a risk register that drives subsequent safety design decisions.

Lesson 3 • Redundant and Diverse Circuit Architectures

Designs dual-channel, voting, and diverse redundancy circuits for safety-critical robot functions. Demonstrates how redundancy reduces probability of dangerous failure.

Lesson 4 • Emergency Stop and Safe Torque Off

Designs hardwired e-stop chains and STO circuits that cut actuator power without software intervention. Meets the most critical safety requirement in human-robot collaboration.

Lesson 1 • Integration Planning and Sequencing

Develops a bottom-up integration plan that verifies each subsystem before combining them. Reduces risk of cascading failures during full-system bring-up.

Lesson 2 • Electrical Verification and Continuity Testing

Applies continuity, insulation resistance, and hi-pot tests to verify wiring harnesses and PCBs. Catches assembly defects before energizing the full robot.

Lesson 3 • Functional Bring-Up Procedures

Guides power-on sequencing, firmware loading, and initial actuator commissioning for each subsystem. Builds confidence in hardware correctness before motion testing.

Lesson 4 • System-Level Performance Testing

Executes load tests, thermal soak tests, and communication stress tests on the integrated robot. Validates that all subsystems meet their performance specifications together.