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Teensy 4.0 Development Board

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IoT projects

Wi-Fi, Bluetooth, and Ethernet connectivity enable the board to be used in IoT projects, such as environmental monitoring, home automation, and wearable devices.

Robotics

The board's high-performance microcontroller and abundant I/O capabilities make it suitable for robotics projects, including robotic arms, autonomous vehicles, and robot platforms.

Industrial control

The Teensy 4.0 can be used to control and monitor industrial equipment, such as sensors, actuators, and displays.

Product prototyping

The board's ease of use and flexibility make it an ideal platform for rapid prototyping and proof-of-concept development.

Key Features

  • Microcontroller: The Teensy 4.0 is based on the NXP i.MXRT1052 microcontroller, which features:

32-bit Arm Cortex-M7 core

480 MHz clock speed

1 MB of Flash memory

192 KB of SRAM

  • Connectivity:

USB

USB 2.0 interface for programming and communication

Ethernet

10/100 Mbps Ethernet interface for network connectivity

Wi-FiOptional Wi-Fi module for wireless connectivity

Bluetooth

Optional Bluetooth 5.0 module for wireless communication

  • I/O Capabilities:
  • Digital I/O34 digital pins, including 12 high-current pins
    Analog I/O14 analog pins, including 2 analog-to-digital converter (ADC) pins

UART

6 UART ports for serial communication

SPI

4 SPI ports for peripheral connectivity

  • Power Management:
I2C2 I2C ports for peripheral connectivity
I2S2 I2S ports for audio applications

Voltage Regulator

On-board voltage regulator for powering external devices

Power Supply

Can be powered via USB, VIN (5V), or external power supply

  • Development Environment:
  • Arduino-compatibleCompatible with the Arduino Integrated Development Environment (IDE)
    C/C++Supports C/C++ programming languages
    Open-source librariesAccess to a vast library of open-source code and examples

    Additional Features

    Real-time clockOn-board real-time clock for time-keeping and scheduling

Temperature sensor

On-board temperature sensor for monitoring board temperature

LED indicators

Multiple LED indicators for visual feedback and debugging

Mounting options

Offset pins and mounting holes for easy installation on a breadboard or PCB

Dimensions and Weight

Length

4.8 cm (1.88 in)

Width

3.1 cm (1.22 in)

Height

1.1 cm (0.43 in)

Weight

14 grams (0.49 oz)

Conclusion

The Teensy 4.0 Development Board is a powerful and versatile platform for building innovative IoT and robotics projects. Its high-performance microcontroller, abundant I/O capabilities, and ease of use make it an ideal choice for developers, researchers, and hobbyists alike.

Pin Configuration

  • Teensy 4.0 Development Board Pinout Overview
  • The Teensy 4.0 development board is a microcontroller-based board designed for building IoT projects. It features the NXP IMXRT1062DVL6A processor, which provides a rich set of peripherals and interfaces. The board has a total of 35 pads, with 29 of them being digital I/O pins. Here's a detailed breakdown of each pin:
  • Digital Pins (29)
  • 1. VIN: Input voltage pin. Connect to a power source (e.g., USB or external power supply). Maximum rating: 6V.
  • 2. 3V: 3.3V output pin. Can be used to power external devices. Maximum current: 250mA.
  • 3. GND: Ground pin. Connect to the ground of your power source or other components.
  • 4. D0/UART_TX: Digital pin 0. Can be used as a UART transmit pin or as a digital I/O pin.
  • 5. D1/UART_RX: Digital pin 1. Can be used as a UART receive pin or as a digital I/O pin.
  • 6. D2: Digital pin 2. General-purpose digital I/O pin.
  • 7. D3: Digital pin 3. General-purpose digital I/O pin.
  • 8. D4: Digital pin 4. General-purpose digital I/O pin.
  • 9. D5: Digital pin 5. General-purpose digital I/O pin.
  • 10. D6: Digital pin 6. General-purpose digital I/O pin.
  • 11. D7: Digital pin 7. General-purpose digital I/O pin.
  • 12. D8: Digital pin 8. General-purpose digital I/O pin.
  • 13. D9: Digital pin 9. General-purpose digital I/O pin.
  • 14. D10: Digital pin 10. General-purpose digital I/O pin.
  • 15. D11: Digital pin 11. General-purpose digital I/O pin.
  • 16. D12: Digital pin 12. General-purpose digital I/O pin.
  • 17. D13: Digital pin 13. General-purpose digital I/O pin. Also, the built-in LED is connected to this pin.
  • 18. SCL: I2C clock pin.
  • 19. SDA: I2C data pin.
  • 20. SCK: SPI clock pin.
  • 21. MOSI: SPI master out slave in pin.
  • 22. MISO: SPI master in slave out pin.
  • 23. CS: SPI chip select pin.
  • 24. A0: Analog input pin 0. Can also be used as a digital I/O pin.
  • 25. A1: Analog input pin 1. Can also be used as a digital I/O pin.
  • 26. A2: Analog input pin 2. Can also be used as a digital I/O pin.
  • 27. A3: Analog input pin 3. Can also be used as a digital I/O pin.
  • 28. A4: Analog input pin 4. Can also be used as a digital I/O pin.
  • 29. A5: Analog input pin 5. Can also be used as a digital I/O pin.
  • Analog Pins (6)
  • 1. A6: Analog input pin 6. Dedicated analog input pin, cannot be used as a digital I/O pin.
  • 2. A7: Analog input pin 7. Dedicated analog input pin, cannot be used as a digital I/O pin.
  • 3. A8: Analog input pin 8. Dedicated analog input pin, cannot be used as a digital I/O pin.
  • 4. A9: Analog input pin 9. Dedicated analog input pin, cannot be used as a digital I/O pin.
  • 5. A10: Analog input pin 10. Dedicated analog input pin, cannot be used as a digital I/O pin.
  • 6. A11: Analog input pin 11. Dedicated analog input pin, cannot be used as a digital I/O pin.
  • Special Pins
  • 1. RST: Reset pin. Connect to a reset button or capacitor to reset the board.
  • 2. PROG: Programming pin. Used for programming the board using a USB connection.
  • Important Notes:
  • When using pins as analog inputs, make sure to use the `analogRead()` function to read the values.
  • When using pins as digital I/O, make sure to use the `pinMode()` function to set the pin as an input or output.
  • Always check the Teensy 4.0 datasheet and documentation for specific pin limitations, restrictions, and recommended usage.
  • Pin Connection Structure:
  • When connecting pins, follow this general structure:
  • Digital pins: Connect to sensors, actuators, or other digital devices.
  • Analog pins: Connect to analog sensors or devices that require analog inputs.
  • Power pins (VIN, 3V, GND): Connect to a power source (e.g., USB or external power supply) and external devices.
  • Communication pins (UART, I2C, SPI): Connect to corresponding communication interfaces on other devices.
  • Special pins (RST, PROG): Connect to reset buttons, capacitors, or programming interfaces.
  • Remember to always check the specific requirements of your project and the devices you're connecting to ensure correct pin connections and usage.

Code Examples

Teensy 4.0 Development Board Documentation
Overview
The Teensy 4.0 is a microcontroller development board designed for building interactive projects. It features a powerful IMXRT1062 ARM Cortex-M7 processor, 1024 KB of flash memory, and 512 KB of RAM. The board is compatible with the Arduino IDE and provides a wide range of peripherals, including USB, Ethernet, and SD card interfaces.
Hardware Specifications
Microcontroller: IMXRT1062 ARM Cortex-M7
 Flash Memory: 1024 KB
 RAM: 512 KB
 Clock Speed: up to 600 MHz
 USB: 480 Mbps
 Ethernet: 10/100 Mbps
 SD Card Interface: Yes
 Analog Inputs: 14
 Digital I/O: 34
 Operating Voltage: 3.3 V
 Operating Temperature: -20C to 85C
Software Development
The Teensy 4.0 is compatible with the Arduino IDE, which provides a user-friendly platform for developing and uploading code to the board.
Example 1: Blinking LED
In this example, we will use the Teensy 4.0 to blink an LED connected to digital pin 13.
```c++
const int ledPin = 13;  // LED connected to digital pin 13
void setup() {
  pinMode(ledPin, OUTPUT);  // Set the LED pin as an output
}
void loop() {
  digitalWrite(ledPin, HIGH);  // Turn the LED on
  delay(1000);  // Wait for 1 second
  digitalWrite(ledPin, LOW);  // Turn the LED off
  delay(1000);  // Wait for 1 second
}
```
Example 2: Reading Analog Values
In this example, we will use the Teensy 4.0 to read analog values from a potentiometer connected to analog pin A0.
```c++
const int potPin = A0;  // Potentiometer connected to analog pin A0
void setup() {
  Serial.begin(9600);  // Initialize the serial interface
}
void loop() {
  int sensorValue = analogRead(potPin);  // Read the analog value
  Serial.print("Sensor value: ");
  Serial.println(sensorValue);  // Print the sensor value to the serial monitor
  delay(100);  // Wait for 100 milliseconds
}
```
Example 3: Ethernet Connectivity
In this example, we will use the Teensy 4.0 to connect to a network using Ethernet and send an HTTP request to a web server.
```c++
#include <Ethernet.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };  // MAC address
byte ip[] = { 192, 168, 1, 100 };  // IP address
EthernetClient client;  // Ethernet client object
void setup() {
  Ethernet.begin(mac, ip);  // Initialize the Ethernet interface
  delay(1000);  // Wait for 1 second
}
void loop() {
  if (client.connect("www.example.com", 80)) {  // Connect to the web server
    client.println("GET / HTTP/1.1");
    client.println("Host: www.example.com");
    client.println("Connection: close");
    client.println();
    client.stop();  // Stop the client
  } else {
    Serial.println("Failed to connect to the web server");
  }
  delay(10000);  // Wait for 10 seconds
}
```
Note: In this example, you need to replace the `mac` and `ip` arrays with your own MAC address and IP address, respectively.