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IOIO-OTG for Android with USB OTG Cable

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Component Name

IOIO-OTG for Android with USB OTG Cable

Overview

The IOIO-OTG for Android with USB OTG Cable is a microcontroller-based interface board designed to facilitate communication between Android devices and external peripherals, sensors, and accessories. This module allows Android developers and enthusiasts to create innovative IoT projects that interact with the physical world.

Functionality

The IOIO-OTG board acts as a bridge between an Android device and external devices, enabling the Android device to control and capture data from various peripherals. The board supports a wide range of digital and analog interfaces, making it an ideal choice for prototyping and developing IoT projects.

Key Features

  • Android Compatibility: The IOIO-OTG board is specifically designed to work with Android devices, leveraging the Android Open Accessory (AOA) protocol to establish communication between the Android device and external peripherals.
  • USB OTG Cable: The module comes with a USB OTG (On-The-Go) cable, which enables the Android device to act as a host, allowing it to communicate with external devices.
  • Microcontroller: The IOIO-OTG board is based on a powerful microcontroller, which provides a high degree of flexibility and customization for IoT projects.
  • Digital and Analog Interfaces: The board features a range of digital and analog interfaces, including:

18 digital GPIO pins

4 analog input pins (10-bit ADC)

2 analog output pins (10-bit DAC)

2 UARTs (RX/TX)

1 SPI interface

1 I2C interface

1 I2S interface

  • Power Management: The IOIO-OTG board can be powered via the USB OTG cable or an external power source (3.3V or 5V). It also features a voltage regulator to ensure stable power supply to the microcontroller and external peripherals.
  • Prototyping-Friendly: The board comes with a breadboard-friendly design, making it easy to prototype and develop IoT projects.
  • Open-Source: The IOIO-OTG board is an open-source platform, allowing developers to access and modify the firmware and software to suit their specific project requirements.
  • Android API: The IOIO-OTG board comes with a comprehensive Android API, providing a set of libraries and examples to simplify the development process.
  • Community Support: The IOIO-OTG board has an active community of developers and users, ensuring that there are plenty of resources available for troubleshooting and project development.

Applications

The IOIO-OTG for Android with USB OTG Cable is an ideal component for a wide range of IoT projects, including

Robotics and automation

Home automation and smart buildings

Wearable devices and health monitoring

Environmental monitoring and sensing

Industrial automation and IoT

Educations and research projects

Microcontroller

[Insert Microcontroller Model]

Operating Voltage

3.3V or 5V

Communication Protocol

Android Open Accessory (AOA) protocol

Dimensions

[Insert Dimensions]

Weight

[Insert Weight]

Operating Temperature

[Insert Operating Temperature Range]

By providing a flexible and customizable interface between Android devices and external peripherals, the IOIO-OTG for Android with USB OTG Cable enables developers to create innovative IoT projects that push the boundaries of what is possible with Android-based IoT development.

Pin Configuration

  • IOIO-OTG for Android with USB OTG Cable - Pinout Explanation
  • The IOIO-OTG for Android is a powerful and versatile Input/Output board designed to interact with Android devices via USB OTG (On-The-Go) connection. This documentation provides a detailed explanation of each pin on the board, facilitating easy understanding and connection for both technical professionals and informed hobbyists.
  • Pinout Structure:
  • The IOIO-OTG board features a 48-pin layout, with pins organized into the following categories:
  • ### Power and USB OTG
  • 1. VIN (Pin 1): Input voltage pin (3.5V - 12V). Connect to a suitable power source, such as a battery or a wall adapter.
  • 2. VUSB (Pin 2): USB voltage pin (5V). Connect to the Android device's USB port for power and data transfer.
  • 3. GND (Pin 3 and 24): Ground pins. Connect to the ground of the power source and the Android device.
  • ### Digital I/O Pins
  • 4. D0 - D13 (Pins 4-17): Digital I/O pins. Can be used as input or output, and support various digital communication protocols (e.g., UART, SPI, I2C).
  • 5. D14 - D23 (Pins 25-34): Additional digital I/O pins, similar to D0-D13.
  • ### Analog Input Pins
  • 6. A0 - A5 (Pins 18-23): Analog input pins. Can be used to read analog signals from sensors, potentiometers, or other analog devices.
  • ### Special Function Pins
  • 7. RX (Pin 35): UART receive pin. Connect to the transmit pin of a serial device.
  • 8. TX (Pin 36): UART transmit pin. Connect to the receive pin of a serial device.
  • 9. SCL (Pin 37): I2C clock pin. Connect to the clock pin of an I2C device.
  • 10. SDA (Pin 38): I2C data pin. Connect to the data pin of an I2C device.
  • 11. SCK (Pin 39): SPI clock pin. Connect to the clock pin of an SPI device.
  • 12. MISO (Pin 40): SPI master in, slave out pin. Connect to the MISO pin of an SPI device.
  • 13. MOSI (Pin 41): SPI master out, slave in pin. Connect to the MOSI pin of an SPI device.
  • ### LED Indicators
  • 14. PWR (Pin 42): Power indicator LED. Indicates the board is receiving power.
  • 15. STAT (Pin 43): Status indicator LED. Indicates the board's operational status.
  • ### Unused Pins
  • 16. NC (Pins 44-48): Not connected pins. Should not be used for connections.
  • Connecting the Pins:
  • When connecting the pins, ensure proper orientation and alignment with the pinout diagram. Use suitable cables, connectors, and jumpers to connect the IOIO-OTG board to your Android device, sensors, and other peripherals.
  • Use a USB OTG cable to connect the VUSB pin to the Android device's USB port.
  • Connect power sources (e.g., batteries, wall adapters) to the VIN pin.
  • Ground the power source and Android device to the GND pins.
  • Connect digital I/O devices to the D0-D23 pins.
  • Connect analog sensors to the A0-A5 pins.
  • Connect UART, I2C, and SPI devices to their respective pins (RX, TX, SCL, SDA, SCK, MISO, MOSI).
  • Observe the LED indicators (PWR, STAT) for board status information.
  • By following this pinout explanation and connecting the pins correctly, you can unlock the full potential of the IOIO-OTG for Android with USB OTG Cable and create innovative IoT projects.

Code Examples

IOIO-OTG for Android with USB OTG Cable
The IOIO-OTG for Android with USB OTG Cable is a development board that enables users to connect Android devices to external hardware components and peripherals. It is based on the IOIO (pronounced "yo-yo") open-source hardware platform, which provides a convenient and flexible way to interface with various devices and sensors.
Features:
Compatible with Android devices that support USB OTG (On-The-Go) technology
 Allows bidirectional communication between Android devices and external hardware components
 Supports up to 48 digital I/O pins, 16 analog input pins, and 6 pwm output pins
 Onboard 3.3V voltage regulator for powering external devices
 Includes a USB OTG cable for connecting to Android devices
Code Examples:
### Example 1: Reading Analog Input Values
This example demonstrates how to use the IOIO-OTG board to read analog input values from a potentiometer connected to analog input pin 0.
Android Code (Java):
```java
import ioio.lib.api.IOIO;
import ioio.lib.api.IOIOFactory;
import ioio.lib.api.AnalogInput;
import ioio.lib.api.exception.ConnectionLostException;
public class AnalogReaderActivity extends AppCompatActivity {
    private IOIO ioio_;
    private AnalogInput analogInput_;
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_analog_reader);
// Initialize IOIO board
        try {
            ioio_ = IOIOFactory.create();
        } catch (ConnectionLostException e) {
            Log.e("IOIO", "IOIO connection lost");
        }
// Get analog input pin 0
        analogInput_ = ioio_.openAnalogInput(0);
// Read analog input value
        float inputValue = analogInput_.getVoltage();
        Log.d("AnalogReader", "Input value: " + inputValue);
    }
}
```
IOIO-OTG Board Connection:
Connect the potentiometer to analog input pin 0 on the IOIO-OTG board
 Connect the USB OTG cable to the Android device and the IOIO-OTG board
### Example 2: Controlling an LED using Digital Output
This example demonstrates how to use the IOIO-OTG board to control an LED connected to digital output pin 13.
Android Code (Java):
```java
import ioio.lib.api.IOIO;
import ioio.lib.api.IOIOFactory;
import ioio.lib.api.DigitalOutput;
import ioio.lib.api.exception.ConnectionLostException;
public class LedControllerActivity extends AppCompatActivity {
    private IOIO ioio_;
    private DigitalOutput ledOutput_;
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_led_controller);
// Initialize IOIO board
        try {
            ioio_ = IOIOFactory.create();
        } catch (ConnectionLostException e) {
            Log.e("IOIO", "IOIO connection lost");
        }
// Get digital output pin 13
        ledOutput_ = ioio_.openDigitalOutput(13);
// Set LED to HIGH (on)
        ledOutput_.write(true);
        Log.d("LedController", "LED is on");
// Set LED to LOW (off)
        ledOutput_.write(false);
        Log.d("LedController", "LED is off");
    }
}
```
IOIO-OTG Board Connection:
Connect the LED to digital output pin 13 on the IOIO-OTG board
 Connect the USB OTG cable to the Android device and the IOIO-OTG board
These examples demonstrate the basic usage of the IOIO-OTG board with Android devices. You can explore more advanced applications, such as reading sensor data, controlling motors, and interacting with other peripherals, by using the IOIO-OTG board's various features and APIs.