Design with LilyPad Coin Cell Battery Holder - Switched in Cirkit DesignerThe LilyPad Coin Cell Battery Holder is a small, lightweight battery holder specifically designed for powering sewable electronic projects. It is part of the LilyPad wearable electronics ecosystem, which is a set of sewable electronic pieces designed to help you build soft, interactive textiles. This battery holder is equipped with an on/off switch, making power management convenient and straightforward. It is commonly used in wearable projects, soft circuits, and educational activities where portability and flexibility are essential.
This circuit is a battery-powered system featuring an Arduino Nano that interfaces with a Nokia 5110 LCD and multiple pushbuttons. The TP4056 module charges the 18650 Li-ion batteries, which then power the Arduino through a step-up boost converter. The Arduino controls the LCD display and reads inputs from the pushbuttons for user interaction.
Open Project in Cirkit Designer
This circuit features a LilyGo-SIM7000G module for cellular communication and GPS functionality, interfaced with an RTC DS3231 for real-time clock capabilities. It includes voltage sensing through two voltage sensor modules, and uses an 8-channel opto-coupler for isolating different parts of the circuit. Power management is handled by a buck converter connected to a DC power source and batteries, with a fuse for protection and a rocker switch for on/off control. Additionally, there's an LED for indication purposes.
Open Project in Cirkit Designer
This circuit is a Bluetooth-enabled battery monitoring and control system using an ESP32 microcontroller. It features multiple push buttons for user input, an OLED display for showing battery voltage and percentage, and a blue LED for status indication. The system also includes a LiPo charger/booster and a USB Type C power delivery module for power management.
Open Project in Cirkit Designer
This circuit features an ESP32 microcontroller connected to a 0.96" OLED display via I2C (SCK and SDA lines), multiple pushbuttons interfaced to various GPIO pins for input, and a LiPoly battery connected through a TP4056 charging/protection module to power the system. A step-up boost power converter adjusts the battery voltage to supply the ESP32 and OLED display. The toggle switch controls the power flow from the battery to the converter, enabling an on/off functionality for the circuit.
Open Project in Cirkit Designer| Pin Name | Description |
|---|---|
+ |
Positive connection point for conductive thread |
- |
Negative connection point for conductive thread |
S |
Slide switch for turning the power on and off |
+ tab to the positive points on your other LilyPad components and the - tab to the negative points.Q: Can I wash my project with the LilyPad Coin Cell Battery Holder? A: Remove the battery before washing. Hand wash gently, avoiding heavy scrubbing on the electronic components. Do not machine wash.
Q: How long will the battery last? A: Battery life depends on the capacity of the CR2032 battery and the power consumption of your project. Typically, a CR2032 battery can last many hours or even days in low-power applications.
Q: Is the battery holder reusable? A: Yes, the battery holder is designed to be reusable. You can replace the battery as needed.
Q: Can I use a rechargeable coin cell battery with this holder? A: Yes, as long as the battery is the correct size (CR2032) and voltage (3V), it can be used with this holder.
// Example code to blink an LED using a LilyPad Coin Cell Battery Holder
// connected to a LilyPad Arduino UNO.
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
}
Remember to switch on the LilyPad Coin Cell Battery Holder before running the code. The above code will blink an onboard LED on the Arduino UNO, which is a simple test to ensure that your power supply from the LilyPad Coin Cell Battery Holder is functioning correctly.