SMAs :Flexinor test
I use a trained flexinor and cut a thin paper into a tongue shape. I sew flexinor on the paper and attach copper tape at each end. I test it with a 9V battery. The motion was very interesting but it was really hard to make an intended motion.
Instructable link :
https://www.instructables.com/id/Friends-a-Circuit-Study-for-Kids/
https://www.instructables.com/id/Friends-a-Circuit-Study-for-Kids/
3V Battery + 1 LED + 1 Pressure sensor doll circuit demo
9V Battery + 2 LED + 1 Pressure sensor doll circuit demo
In the class, I tested as many thermochromic inks as I can. for the homework, I decided to do embroidery. I embroidered a heart with the letter love by using conductive thread. Everything was connected and I used 9V battery. for the result, It was really hard to see the details on the thermochromic painted fabric. maybe it was because i made the pattern so small.
I made pentagon shape speaker by using copper tape. I forgot to connect lines so I fixed it after. I add a paper to avoid overlap the circuit.
I made 3 connectors and 5 nodes in the class.
I finished the ATtiny Sensor based on the drawing. It was really tricky to solder everything because the circuit was so small.
for learning new crafting skill, I learned to crochet. I already knew how to knit but crochet was a very different skill. Not like knitting, the really good thing about the crochet skill is easy to make round shape. I had a hard time making a flat cup coaster. I had to count every line and remember the right number to make a perfect pattern. After practicing, I used to the skill and play around with making different patterns. It’s harder than knitting but much useful for making a pattern such as lace, cover, and blanket.
for making three swatches, I made three pressure sensors by knitting. I knitted cover first. I put a sponge inside the swatch and wrapped the bare wire around the sponge. Next, I covered the sponge with the Pressure-Sensitive Conductive Sheet and attached the copper tape at the end of the bare wire. inside the cover that I knitted, I attach the copper tape. for the last step, I put everything and sew the cover to close the swatch. At outside, I left the small copper tape part that I connected at the end of the bare wire and inside the cover so I can connect each part to the power source.
NO)WHERE (NOW)HERE by ying gao is the most interesting project for me.
The project was inspired by the essay entitled “Esthétique de la disparition” (The aesthetic of disappearance), by Paul Virilio (1979). ” This garment is not just glowing. It changes its form continuously and glowing at the same time. the layer of the texture is
also very interesting and beautiful. I love this project because it’s not just beautiful. It’s also functional at the same time. this moving garment feels like someone is wearing live creature. It works both in the dark environment and the daylight.
Instructables link : https://www.instructables.com/id/CATOYLAMP/
I was inspired by cat toys and the shape of ground cherries. I created this lamp project for my cat. When I couldn’t spend time with my cat and left her alone at home for long time. it makes me feel bad. especially, when I went out in the morning and came back to home at the night time. My cat left alone in the dark space. I couldn’t turn on the light and left home. That’s why I decide to make this lamp with a photocell sensor which senses the brightness. In my lamp, There is three lamps and lamp will be turn on by the brightness of its environment. for example. When It’s completely dark all 3 lights will be turn on. If it’s little bright then 2 lights will be light on. when it’s bright but little dark then 1 light will be turn on. when it’s really bright then no light will be turn on.
for materials,I try to use materials that cats like. I choose to make lamp shades with origami paper because cats like the sound of paper boxes. for the pole, I cover it with knitted fabric and braid wires with three different colors of normal yarns to give a soft feeling.
Prototype test
first I try to do prototype test with an Arduino and a bread board with 3 LED lights and a photocell sensor. I use 10k resistor for a photocell sensor and 220 resistor for each LED light.
circuit test video link : https://youtu.be/7xN7Cr3xJxI
circuit explain for 5 year old : https://vimeo.com/235579493
I use pressure sensor and set up 3 LED light in the circuit.
mesure range is 0~800.
if pressure is between 0~300 green LED is turn on
if pressure is between 300~500 red LED is turn on
if pressure is between 500~800 blue LED is turn on
-Jaeky Cheong