How to Use TeenzyLC: Examples, Pinouts, and Specs

The TeenzyLC is a compact, low-power microcontroller board designed for embedded applications. It features a range of digital and analog I/O pins, making it highly versatile for various projects. Its small form factor and energy efficiency make it ideal for applications such as IoT devices, robotics, wearable technology, and sensor-based systems. The board is compatible with a wide array of sensors and modules, providing flexibility for both hobbyists and professionals.

Common applications of the TeenzyLC include:

• IoT (Internet of Things) devices
• Robotics and automation systems
• Data acquisition and logging
• Wearable technology
• Prototyping and educational projects

The following are the key technical details of the TeenzyLC microcontroller board:

The TeenzyLC has a total of 25 digital I/O pins, including analog inputs and PWM outputs. Below is the pin configuration:

1. Powering the Board: Connect the VIN pin to a power source (3.6V to 6.0V) or use the Micro-USB port for power and programming.
2. Connecting I/O Devices: Use the digital and analog pins to connect sensors, actuators, or other peripherals. Ensure that all connected devices operate at 3.3V logic levels.
3. Programming the Board: Install the Arduino IDE and the Teensyduino add-on to program the board. Select "Teensy LC" as the board type in the IDE.
4. Uploading Code: Write your code in the Arduino IDE, connect the board via USB, and upload the code.

• Voltage Levels: All I/O pins operate at 3.3V. Connecting 5V devices directly to the pins may damage the board.
• Power Supply: Ensure a stable power supply to avoid unexpected resets or malfunctions.
• Pin Usage: Avoid using the same pin for multiple functions simultaneously (e.g., digital I/O and PWM).
• Libraries: Use compatible libraries for sensors and modules to simplify development.

The following example demonstrates how to read an analog sensor value and control an LED using the TeenzyLC:

// Define pin numbers
const int analogPin = A0; // Analog sensor connected to pin A0
const int ledPin = 13;    // LED connected to digital pin 13

void setup() {
  pinMode(ledPin, OUTPUT); // Set LED pin as output
  Serial.begin(9600);      // Initialize serial communication
}

void loop() {
  int sensorValue = analogRead(analogPin); // Read analog sensor value
  Serial.println(sensorValue);             // Print sensor value to Serial Monitor

  // Map sensor value to PWM range (0-255) and write to LED
  int ledBrightness = map(sensorValue, 0, 1023, 0, 255);
  analogWrite(ledPin, ledBrightness);

  delay(100); // Small delay for stability
}

1. Board Not Recognized by Computer:

   • Ensure the USB cable is functional and supports data transfer.
   • Verify that the correct board type ("Teensy LC") is selected in the Arduino IDE.
   • Install or update the Teensyduino add-on.

2. Code Upload Fails:

   • Check the USB connection and ensure the board is in programming mode.
   • Press the reset button on the board to reinitialize the bootloader.

3. I/O Pins Not Working:

   • Confirm that the connected devices are operating at 3.3V logic levels.
   • Check for loose or incorrect wiring.

4. Power Issues:

   • Use a stable power source within the specified voltage range (3.6V to 6.0V).
   • Avoid powering high-current devices directly from the board.

Q: Can the TeenzyLC handle 5V logic devices?
A: No, the I/O pins are 3.3V tolerant. Use a level shifter to interface with 5V devices.

Q: What is the maximum current output of the I/O pins?
A: Each I/O pin can source or sink up to 10mA. Exceeding this limit may damage the pin.

Q: Is the board compatible with Arduino libraries?
A: Yes, most Arduino libraries are compatible with the TeenzyLC when using the Teensyduino add-on.

Q: Can I power the board using a battery?
A: Yes, you can use a battery within the voltage range of 3.6V to 6.0V connected to the VIN pin.

By following this documentation, you can effectively utilize the TeenzyLC for your embedded projects.