Snack-time describes a speculative ambient body-centric design project in which people can use it as a reminder. I am again doing this project for people with diabetes. I know they sometimes forget their snack time in their fast-paced working/ studying environment. The purposes of this project I imagined working with shape-memory alloys) that highlights when it is time for a snack.
Why this project:
- We can set alarm on our phone, but lots of people got bored of getting another digital note. Who wants to see another alarm?
- This product allows them to get some creative input into own treatment.
- This note- Snack– can vary, and be customized.
Above you can see a sketch of my concept.
I have learnt how to shape a shape- memory alloys. You have to give it shape and heat at a high temperature. When it gets colder you can change its shape, When the system works again, the wire gets warmer because it is also a resistor, and gets its original shape again.
Below you can see the low-fidelity prototype of my concept.
I discovered “Fritzing” software. It was my first time using it and found it very useful because I did not have some of the components for the circuit. I
In the image below you can see the sketch of the circuit. The red spring is representing the flexinol (shape-memory alloy).
- Spreadsheet Data: You can find here:
- Hardware: Circuit and Arduino-UNO
- Software: Arduino
- Shape Memory Alloy (Flexinol)
- Batteries (I used a 9V. Don’t forget you need a way to connect it to your breadboard)
- 1 Voltage Regulator
- 1 Rectifier Diode
- 1 Resistor
- Connector Wires (I use alligator clips and jumper wires)
- Heating code ( here to download): I used it to apply heat on the alloy. I tried to customize it with the code below
int springPin = A1;
pinMode(springPin, OUTPUT); // Set the mode of springPin to output.
digitalWrite(springPin, HIGH); // Turns on spring.
- Timer (here to download): I also tried to customize the code by this DTime.ino code. The code itself did not work. I tried to fix it and apply it onto the heating code as well. I also tried the codes that I found at the library as Arduino-timer, ArduinoThreads, LightDimmer.
- Learned about how we shape memory-alloy and how it works.
- Alloy gets its shape by higher heat and voltage.
- Learned about and used Fritzing for the first time.
- My knowledge in using Arduino, and reaching the sources still give me a disadvantage.
- I could not make LEDs, memory alloy work (together) with Arduino. Still, I have to work on coding. I am investigating Adafruit, GitHub etc.