Calma

A heated meditative blanket to help reduce stress.

What is it?


Calma is a heated meditative blanket designed to help reduce stress and intrusive thoughts before sleep. The blanket combines principles from the worlds of meditation and mindfulness and is based on the "body scan" technique – a practice where attention is directed to different areas of the body, while focusing on the physical sensations that arise. The blanket includes six heating pads located along the arms, abdomen, chest, and thighs. Once the user selects the desired temperature, they cover themselves with the blanket and use the markings on it to position themselves correctly. The blanket gradually warms one area at a time: chest, abdomen, hands, and thighs. Each area warms for 30 seconds, and the entire session lasts three minutes. During the session, the user is invited to focus their attention on the heated area, which helps increase introspection and relaxation.

Project Info


  • Students: Mai Barzilai, Theodor Dai Maman, Shira Dagan, Yuval Fligman, Ziv Nissim
  • Year: 2025
  • Lecturer: Dr. Noa Morag
  • Teaching Assistant: Ofir Sadka
  • Industrial Designer: Aviad Kelner

 

Students' Website

 

How does it work?

The blanket has three main parts. First is the thermal layer, which contains the heating pads and connecting wires. The second is the fabric cover, which serves as the mapping layer and has markings indicating the pad locations on the blanket, guiding the user on how to position it on their body. The third is the system's central control hub, which includes the ESP32 controller, switching components (MOSFETs), indicator lights (LEDs), a dial for heat control, and a connection to a 12V power supply. This unit is responsible for managing the heating sequence between the pads according to the meditation logic and allows control over the blanket's operation.

 

The system is controlled by an ESP32 controller and is designed for precise control of pad heating. The pads are made of polyester fabric and incorporate a Nichrome alloy as the heating element. The pads are connected to two MOSFET transistors, which control the flow of electricity from an external 12V power supply. A rotary knob allows for temperature control, ranging from 25°C to 45°C. The knob includes a visual indicator via an LED strip. The ESP32 sends PWM pulses (rapid on/off switching) to the MOSFETs, so the pad receives an average power output corresponding to the selected heat intensity.