Assignment
This week assignment was propose a final project's business model. My final project is a color box. But in my opinion, it's quite useless...But let me see how to build a business model for a useless thing.
Designing
Color box is a box that can change color when it detected some other color box near it. Basiclly, there is nothing done beforehand. But there are some light box with different shapes.
People put these designing lights in there house to make it more shiny. As there lights, my color box need some leds as main components. And to achieve the function, I need some PCB boards and sensors. In China, we can by all the things through alibaba. They can even sell you huge amounts of components. The more you buy, the cheaper it will be.
In my color box design, I will make some led pcbs and put them around my box. An MCU control the sensors and the change of colors. I will use milling machine to mill the board, program the board with input and output components and combine the 3D design and 2D design to make a box.
The biggest question i need to be answered is how to detect the color and change to the middle color of two box. I will set a wifi or bluetooth module to communicate the color.
I can make the box in two weeks. So the schedule is:
Day1-4: PCB design and make;
Day5-7: Program;
Day7-9: Box design;
Day9-12: Test the systems.
If two box can communicate and change color, then i will be success.I will make at least three boxes. About hand size each. 3D printing the box and make the pcb boards inside the box.
Bom
1. RGB LEDs rmb2.00 * 50
2. MCU rmb15*3
3. Nrf24l03 rmb15*3
4. Switch rmb0.3*3
5. Megnet rmb0.5*10
6. Resistor 0.1k, 1k, 10k, 100k
7. Capacitor 100nf, 10uf
8. AMS1117-5v,3.3v rmb10*6
9. PLA materials
10. Paper board for holding the wire.
Estimated cost of my product may be rmb100 each. I think it's pretty cheap..
During the progress i will use 3D priting, electrical board making, input and output, communicaton and laser cutting.
I will buy all the material from taobao.com. Chinese ebay!
Questions
Because i need to realize many function, i have several problems need to answer.
1. How to communicate?
Two color box exchange each color. So i have to build a communication system. That is the main function of my box. I will use nrf24l01 to achieve the communication.
2. How will it be evaluated?
The most important two function come true and that means i have completed my project and can sell it to the market! It's priceless!