TfCD E-textile Thermoresponsive Cup Holder




Introduction: TfCD E-textile Thermoresponsive Cup Holder

With the use of e-textile this cup holder lets you know when your tea is the perfect drinking temperature. It consists out of a cotton sleeve with an electric circuit which contains multiple LEDs and a temperature sensor.

Step 1: What Do You Need

  • Arduino board
  • Breadboard
  • 9 Jumper wires
  • 3 220Ω resistors
  • 3 LEDs
  • Temperature sensor


  • Cotton textile


  • Soldering iron
  • Sewing machine
  • Scissors

Step 2: ​Where to Put Them?


  • Red LED goes to digital pin 4 through one of the resistors, and ground
  • Green LED goes to digital pin 3 though a resistor, and ground
  • Blue LED goes to digital pin 2 through a resistor, and ground

To place the LED's on the cup solder wire's to each of the legs of the three LED's.

Temperature sensor:

  • Left pin goes to 5v
  • Middle pin goes to analog pin A2
  • Right pin goes to ground

To place the temperature sensor on the cup solder wire's to each of the legs of the temperature sensor.

Step 3: Arduino Code

Download the code to make your circuit work!

Step 4: Cotton Sleeve

Create the sleeve

  • Fold over the edges twice (black lines) and sew them closed.
  • Place the good sides of both of the fabrics on top of each other. Then sew closed on the grey and white lines.
  • Turn inside out and your basic sleeve is complete.

Step 5: Put Everything Together

  • Make holes for the LED's to come out of the sleeve.
  • Put the temperature sensor between the sleeve and the cup.

It works!

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    2 years ago

    I need one of these, I always burn myself when I check the temperature XD