Main Point
Slides
glitch Example 1, highscore game with midi and click
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glitch Example 2, networked drawing
code
glitch Example 3, networked skeleton
code
EXTRA STUFF
I2C Communication Protocols
I2C (Inter-Integrated Circuit) is a serial communication protocol designed for short-distance communication between integrated circuits on a single board.
Protocol Basics
I2C uses a two-wire interface for bi-directional communication, operating in a synchronous, serial manner with addressing capabilities.
Understanding Sensor Interfaces - UART, I2C, SPI and CAN ↗Master-Slave Communication
One master device initiates and controls communication with multiple slave devices, coordinating data transfer and clock synchronization.
Clock and Data Lines
SCL (Serial Clock Line) provides timing synchronization, while SDA (Serial Data Line) carries the actual data between devices.
Addressing and Transfer
Each slave device has a unique 7-bit address, allowing up to 128 devices on the same bus. Data transfer occurs in 8-bit packets with acknowledgment.
SPI Interfaces
Serial Peripheral Interface (SPI) is a synchronous serial communication interface used for short-distance communication in embedded systems.
- MOSI (Master Out Slave In) - Data line from master to slave
- MISO (Master In Slave Out) - Data line from slave to master
- SCK (Serial Clock) - Clock signal generated by master
- CS (Chip Select) - Signal to select specific slave device
SPI offers full-duplex communication, allowing simultaneous data transmission and reception. Multiple slave devices can be connected through individual CS lines, enabling efficient device selection and communication.
Optimizing Sensor Data Acquisition in Industrial Automation ↗Analog and Digital Input Reading
ADC Concepts
Analog-to-Digital Conversion transforms continuous analog signals into discrete digital values for processing by microcontrollers.
Digital Input Principles
Digital inputs read binary states (HIGH/LOW) with defined voltage thresholds and debouncing techniques for reliable readings.
Sampling Rates
The frequency at which analog signals are sampled affects data accuracy and system responsiveness. Nyquist theorem guides minimum sampling rates.
Resolution and Accuracy
ADC resolution (bits) determines the precision of analog measurements, while accuracy depends on reference voltage stability and noise management.
Principles of Data Acquisition and Conversion ↗Real-time Data Streaming
- Data buffering techniques for managing continuous data streams without loss
- Continuous sampling strategies for maintaining consistent data acquisition
- Precise timing considerations to ensure data integrity and synchronization
- Optimizing data throughput while managing system resources effectively
Real-time data streaming in embedded systems requires careful balance between sampling frequency, buffer management, and processing capabilities to maintain reliable operation.
High-Speed, Real-Time Sensor Data Acquisition and Transfer Based on the Raspberry Pi ↗Sensor Communication Protocols
One-Wire Protocol
Single-wire bidirectional communication protocol, ideal for temperature sensors and simple devices. Supports multiple devices on a single data line.
Learn More ↗UART/USART
Universal Asynchronous/Synchronous Receiver-Transmitter protocol for serial communication between devices. Commonly used in GPS modules and debugging interfaces.
Documentation ↗CAN Bus
Controller Area Network protocol, robust against electromagnetic interference, widely used in automotive and industrial sensors.
CAN Bus Guide ↗Modbus
Industrial standard protocol for connecting electronic devices. Supports both RTU and TCP variants for sensor communication.
Specifications ↗MIDI and OSC Protocols
MIDI Protocol
Musical Instrument Digital Interface protocol for real-time music performance data transmission.
- Note messages (Note On/Off, Velocity)
- Control Change messages (CC)
- System Exclusive messages (SysEx)
- Clock and timing synchronization
OSC Protocol
Open Sound Control - modern alternative to MIDI, offering greater flexibility and networking capabilities.
- Network-based communication
- Flexible message formatting
- High-resolution timing
- Pattern matching capabilities
Implementation Examples
Common libraries and frameworks for MIDI/OSC implementation:
Real-world Applications
Practical uses in creative coding and performance:
- Live music performance systems
- Interactive installations
- Digital audio workstations
- Networked music performances
Implementation Examples
Common libraries and frameworks for MIDI/OSC implementation:
Error Handling and Calibration
Error Detection and Recovery
Implementing robust error detection and recovery mechanisms for reliable sensor data acquisition.
An Overview of IoT Sensor Data Processing, Fusion, and Analysis Techniques ↗Data Processing and Storage
Basic Data Filtering
Implementation of digital filtering techniques for noise reduction and signal conditioning.
Processing Analog Sensor Data with Digital Filtering ↗Data Logging
Methods for efficient data storage and retrieval using SD cards in embedded systems.
Using the SD Card | Adafruit Data Logger Shield ↗Wireless Data Transfer
Implementing reliable data streaming over USB and Bluetooth interfaces.
Bluetooth Data Loggers: When, How & Why You Should Use Them ↗Memory Management
Strategies for efficient memory usage and data buffer management.
Optimizing Sensor Data Acquisition in Industrial Automation ↗