LilyPad 328 Main Board ATmega328P ATmega328 16Mhz Arduino Compatible - Image 1
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LilyPad 328 Main Board ATmega328P ATmega328 16Mhz Arduino Compatible

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Description

Introducing the LilyPad 328 Main Board ATmega328P – Your Creative Canvas for E-Textile and Wearable Innovations!

Unleash your creativity with the LilyPad Arduino 328 Main Board. Merging the power of an Arduino-programmed microcontroller with the versatility of e-textiles and wearables, this compact masterpiece is engineered for seamless integration into your imaginative projects. Crafted with meticulous attention to detail, it seamlessly blends the rich functionality of conventional Arduino boards into a lightweight, round form factor. This design ensures a snag-free experience and a streamlined profile, complemented by broad tabs primed for easy sewing and connectivity through conductive thread.

At the heart of the LilyPad Arduino resides the ATmega328, preloaded with the Arduino bootloader, and paired with a purposeful selection of essential external components. This careful curation keeps it compact and straightforward, empowering your projects with Arduino’s prowess while maintaining an unobtrusive presence.

Versatility defines this board’s character, with a voltage range spanning 2V to 5V, opening avenues for diverse applications. The generously sized pin-out holes take the frustration out of sewing and connecting, enabling you to effortlessly link a range of input and output devices, from luminous lights to dynamic motors and responsive switches.

The LilyPad emerges from the creative minds of Leah Buechley and SparkFun, a wearable e-textile technology that’s redefining self-expression through technology. Innovatively designed with spacious connecting pads, each LilyPad is primed for seamless integration into clothing, transforming fabric into a canvas of limitless possibilities. Whether you’re an artist, a hobbyist, or a tech enthusiast, the LilyPad’s array of input, output, power, and sensor boards empower you to craft and innovate like never before.

Technical Marvels:

  • Diameter: A comfortably compact 50mm outer dimension ensures seamless integration.
  • PCB Thickness: A sleek 0.8mm profile combines elegance with robustness.
  • Voltage Input Range: Flourish within a voltage spectrum of 2V to 5V, embracing diverse power sources.
  • Bootloader: Harness the familiarity of the Arduino UNO bootloader for swift development.
  • Microcontroller: Empowered by the ATmega328 running at a steadfast MHz, bridging innovation and performance.

In the Package:

1 x LilyPad 328 Main Board ATmega328P – Your Gateway to Arduino-Compatible Wonders in Wearable Technology.

Transform your vision into reality. Elevate your wearables. Dive into a realm where technology and fashion converge – all with the LilyPad 328 Main Board ATmega328P.

📌 Code Examples & Usage – LilyPad 328 Main Board (ATmega328P)

📋 Overview

The LilyPad 328 is a wearable-focused Arduino-compatible board designed for e-textiles and soft electronics. It uses the ATmega328P microcontroller and features large sewable pads for conductive thread.

Ideal for:

  • Wearable electronics

  • E-textile projects

  • Interactive clothing

  • LED costumes

  • Educational STEM projects

📌 This board uses the same core MCU as an Arduino Uno, but in a wearable-friendly circular layout.

⚙ Key Features

  • MCU: ATmega328P

  • Clock speed: 16 MHz

  • Operating voltage: 5V

  • Logic level: 5V

  • Flash memory: 32 KB

  • SRAM: 2 KB

  • EEPROM: 1 KB

  • Sewable pads for conductive thread

  • Arduino IDE compatible

⚠ IMPORTANT – Programming & Power Notes

🚨 The LilyPad 328 does NOT have onboard USB

To upload code you will need:

  • USB-to-Serial adapter (FTDI, CP2102, CH340, etc.)

  • Correct wiring to the programming pads

🚨 Always disconnect power before sewing or modifying connections

🔌 Programming Connections (FTDI / USB-Serial)

LilyPad Pad USB-Serial Adapter
+5V 5V
GND GND
RX TX
TX RX
RST DTR (via 0.1 µF capacitor)

📌 If your adapter does not have DTR, press RESET on the LilyPad manually just before uploading.

🛠 Arduino IDE Setup

Board Selection

  • Board: Arduino Uno
    (or Arduino LilyPad if available in your IDE)

Processor

  • ATmega328P (16 MHz)

Port

  • Select your USB-Serial adapter port

🧪 1️⃣ First Test – Blink an LED

int ledPin = 13; // onboard LED pad

void setup() {
pinMode(ledPin, OUTPUT);
}

void loop() {
digitalWrite(ledPin, HIGH);
delay(500);
digitalWrite(ledPin, LOW);
delay(500);
}

✔ Confirms programming setup
✔ Safe first test before sewing components

🧵 2️⃣ Sewable LED Example

int ledPin = 6; // sewable pad

void setup() {
pinMode(ledPin, OUTPUT);
}

void loop() {
digitalWrite(ledPin, HIGH);
delay(1000);
digitalWrite(ledPin, LOW);
delay(1000);
}

📌 Use conductive thread and keep stitches short to reduce resistance.

🧪 3️⃣ Button Input Example (Wearable Switch)

int buttonPin = 9;
int ledPin = 6;

void setup() {
pinMode(buttonPin, INPUT_PULLUP);
pinMode(ledPin, OUTPUT);
}

void loop() {
if (digitalRead(buttonPin) == LOW) {
digitalWrite(ledPin, HIGH);
} else {
digitalWrite(ledPin, LOW);
}
}

✔ Works well with fabric pushbuttons or snap fasteners

🔋 Powering the LilyPad

Power Source Notes
5V FTDI adapter Programming & testing
LiPo battery (via regulator) Wearable use
Coin cell (limited) Low-power projects only

📌 Avoid high-current loads when using batteries.

🧠 Wearable Best Practices

✔ Keep conductive thread runs short
✔ Avoid thread crossing (risk of shorts)
✔ Secure knots with fabric glue
✔ Test circuit before sewing permanently
✔ Remove batteries before washing garments

🔧 Common Issues & Fixes

Issue Cause Fix
Upload fails RX/TX swapped Swap connections
Needs manual reset No DTR Press reset before upload
Random resets Weak power Improve battery supply
LEDs dim Thread resistance Shorter stitches

Additional information

Weight 30 g
Dimensions 260 × 160 × 20 mm

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