IoT Exercises pt.2 & Final Project update

IoT Exercises pt.2:

Fail to blink the led with Neopixel, I don’t know why. Only the led can be lighted up. And for the lesson 6, I don’t have enough components.


Final Project update:

Inspired by the project above, I want to make a table lamp. It’s a bit hard to sketch the idea, so that I made a simple paper sketch instead.

When people touch the center area to turn it on, the light effect will be like water waves, as if a hand touches the water surface.

Bill of Materials:

  1. Neopixel ring (3 different sizes)
  2. Neopixel strip
  3. Touch sensor
  4. Copper foil

Circuit & Arduino code(unfinished):

Qiting’s loT exercise & final project

Final project design concepts:

1)Water surface lamp. Touch the center area to make a little wave on the water surface.
2) Whac-A-Mole game. The lights pop up at random, points are scored by whacking each light as it appears. The faster the reaction the higher the score.

3) I want to make a bingo game for people to pass time in the elevator. The game board is hung in the elevator and people can light up the LEDs by touching it. The player who succeeds in placing three of their marks in a horizontal, vertical, or diagonal row is the winner. There will be a voice coming out “BINGO!” when someone wins the game.

Qiting’s Halloween costume

Final outcome

Design concept

This is a vampire bride costume that I designed for Halloween. I made a black wedding veil(hair pieces) and dressed it with 1o led randomly. Also,  I wanted it to light up when it was shaken slightly, but it failed after testing with a vibration switch.

Materials

  1. Led strip(ws2812b)
  2. Vibration sensor switches(For testing)
  3. Two fabric materials to make a black wedding veil(hair pieces)
  4. A hairpin
  5. A ghost toy decoration
  6. Black wire
  7. Hot glue
  8. Sewing kit

Making process

Step 1: I made a hair piece of black wedding veil by using two different fabric and a hairpin.

Step 2: Cut 10 leds from the Neopixel strip and solder them one by one. Each led was tested once to ensure that there will be no improper connection problems.

Step 3: Glue the leds to the headwear with hot glue. I tested the vibration switch and found out that the vibration switch doesn’t work pretty well. The switch cannot detect the head slightly wobbling sensitively. It only work when shaking head wildly. So I removed the switch.

https://www.tinkercad.com/things/ay7IccK4ic8

Qiting’s Halloween Custom

I plan to make a black wedding veil(hair pieces) and dress it with red led. I want it light up when slightly wobbling. It’s a vampire bride costume so that I also want to add two ghostes as decoration. In order to do this, I would need:

  1. Vibration sensor switch(5 different types for testing, SW-18015P/SW-460D/SW-1820P/SW520D/SW200D)
  2. Led strip(ws2812b)
  3. Black wedding veil(hair pieces)
  4. Ghost toys decoration
  5. Wire
  6. Battery
  7. Hot glue
  8. Felt fabric

I found a tutorial on how to use the vibration switch. Basically, it just a switch that triggered by shaking. The connection method is the same as a normal switch. The sensitivity and the pin of each vibration switch are different, so that I brought 5 different types to test which one is more suitable.

Qiting’s Neopixel circut & Halloween custume ideas

https://www.tinkercad.com/things/57PsvwDEnrA

My three ideas are a mask with red tcross light in the middle, a mask with voice sensor getting brighter when you speak louder, and a bow hair tie with sensor that light up when shake it.

I want to make a bow hair tie that will shine when you look back or shake it. The material is a translucent fabric with ruffled folds, which is glossy. Can insert a light strip in the middle. But it is not sure what sensor to use to achieve this effect.

Qiting’s plush night light final

3 initial ideas

These are my three initial ideas. The first idea is a floating balloon lamp, the second one in the shape of a coin purse that lights up as soon as you turn on the light, and the last one is to change the light effect through the texture of the fabric.

Description of plush night light

My intention in designing this night light is to create a warm atmosphere for users by changing the lighting effects. It can be designed as a series of night lights of different sizes and placed on the bedside, desk, living room, etc. according to the needs of users.

Cloth is a material with a certain degree of flexibility, which can change the lighting effect through some simple fabric modification. I made diamond-shaped folds by sewing. When the fabric is stretched, the folds are deformed and the light will be different.

I first tried to make diamond folds on the black fabric to make a small model, but I finally found that the dark fabric did not transmit light, which failed.

Then I used white cloth to make a larger one. The diamond-shaped folds give it a certain degree of elasticity, and the light will change when the folds are deformed. Since the fabric is very soft and can’t support the feature, I used cardboard to support it.

The final model replaced the cardboard with anti-collision foam, which can transmit light and have a certain degree of support.

Description of parts & materials

Fabric (White&Black) / Led * 2(Yellow) / 4.5V Battery Pack / 3V Battery Pack/ AAA Battery *3 / Heat Shrink Tubing

Qiting’s Plush Night Light Proposal

3 initial ideas

These are my three initial ideas. The first idea is a floating balloon lamp, the second one in the shape of a coin purse that lights up as soon as you turn on the light, and the last one is to change the light effect through the texture of the fabric

Description of plush night light

Cloth is a material with a certain degree of flexibility, which can change the lighting effect through some simple fabric modification. I made diamond-shaped folds by sewing. When the fabric is stretched, the folds are deformed and the light will be different.

The bedside lamp I designed for children comes in two sizes. The fabric is soft and skin-friendly, and children can place it as they want, whether it is opened, closed, or even down. There is no specific way to use it.

Description of parts & materials

Fabric (White&Black) / Led * 5 (Yellow) / 4.5V Battery Pack / 3V Battery Pack/ AAA Battery *5 / Heat Shrink Tubing

Old DVD player teardown

Teardown process video

A funny story, my parent told me this is a desktop HDD from the 90s. They removed it before replacing the old-fashion desktop and kept it for almost 20 years, because they were afraid of personal information leakage. I thought it would be a lots complicated electronic components inside, but after disassembly, I found out that it is just a DVD player. 

Parts with materials & technology

Overview
Overview

1&2, full metal shell pressure casting
3&6, plastic frameinjection molding
4, CD holder – plastic – injection molding
5, plastic lipinjection molding
7&18, gear system – plastic – injection molding
8&9, metal framepressure casting
10, metal stickroll
11, PNB1-T278-BC axis of rotation – metal&plastic
12, laser head – metal&plastic
13, control panel (view more below)
14, clip (view more below)
15, data tapemetal&plastic
16, TB2520 linear motormetal
17, springs metal – chill block melt-spinning
18, screws –  metal – chill block melt-spinning

Clip & Control panel

1, MT1329E DVD server & decoding chip
2, MT1326Fradio-frequency power amplifier
3, DM168Dcache drive
4, switch
5, resistance
6, shift
7, capacitance
8, M.T.C ccm03-020r1-4spindle motor
9, volume control valve
10, headset jack
11, resistance

Tools

cross screwdriver & slotted point screwdriver & hexagonal screwdriver

Design elements

Tendons

I got a big trouble at the every beginning. Even if I removed all the screws, I still couldn’t tear the metal shell down. You can see in my video that I took it apart with brute force ultimately. Later, I noticed there are many small tendons on the side that prevent people from moving it. Screws are not just for fixing, but a double insurance. This design element interest me that the design of the object itself is more important, and it can be stronger without adding extra content.

Texture detail

Another thing I found was that the surface friction of the rotation axis drive the DVD to rotate at a high speed. I thought there would be something inside for fixing, did not expect for a solution of the object’s CMF. The designer may easily fix the DVD through the texture without adding additional parts to achieve the goal. As the same I discovered at the first design elements.

Thanks for watching ❤️