corporate gift-DIY磁懸浮玩具的做法(圖解)(第1頁)

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一篇來自國外的點子DIY作品，一名電子學高手制作的磁懸浮玩具，簡單翻譯了一下，有具體制作的教學步驟，看了教程以后你應該也可以輕松DIY一個漂浮在空中的小作品了！

這個裝置結合了永磁鐵和電磁鐵，利用一個微控制器和一個IR感應器，當內部裝有磁鐵的小物體放在電磁鐵的下方，IR感應器就會感應到物體的存在，微控制器就會啟動電磁鐵并調整磁力大小，當小物體受到向上的磁力和向下的重力相同時，它就會漂浮在空中，漂浮的位置和高度取決于重量和磁力大小。

工作原理圖如下：

一、材料準備

所需材料如下：
- ATMega168 Microcontroller
- 1 16-20 MHz Crystal
- 28 Pin Socket
- Dual Full H Bridge IC
- 1 Power NPN
- 2 Electromagnets
- 1 Bicolour LED
- 2 IR LED
- 1 IR Photodiode
- 1 5V Regulator
- 2 Leveling Capacitors
- 1 SPST Switch
- 1 NO Button
- 1, 470 Ohm Resistor
- 1, 5 Ohm Resistor
- 1 Universal Breadboard
- 2 Cases
- Plexiglas
- Solder
- Hot Glue
- Steel Wire
- Vinyl Tubing
- 3 or more 1/4 diameter x 1/4 thick rare earth magnets (for the base)
- 2 or more 1/2 diameter x 1/8 thick rare earth magnets (for the objects)

所需工具：
- Soldering Iron
- Hot Glue Gun
- Desoldering Pump
- 3rd Hand
- Plexiglas cutter

　二、底座的準備

　　使用收音機的發射盒作為底座，裝戒指的盒子用來裝點磁鐵和感應器。首先在每個盒子的表面分別鉆洞，用來穿過電線，安裝電源鈕、設置高度鈕，安裝LED指示燈。

連接兩個盒子的是一根鐵絲，使用膠把兩個盒子分別固定在鐵絲兩端。

三、安裝電磁鐵和感應器

　　將電磁鐵的線圈連接電源供給線，并安裝到戒指盒子中，注意確保每根電源線的安裝正確，以確保線圈通電后能夠產生磁力。安裝完成后，在線圈中央加入永磁鐵。

這個是感應器，將它粘在一塊透明的有機玻璃上，然后連接電源線，同樣保證每根電源線的安裝正確。

四、底座各電子元件的安裝組成

　　這部主要是進行底座上各控制元件的安裝，包括微控制器、電源供給、LED指示燈等部分的安裝。具備電子學專業知識的朋友可以通過下面原文了解詳細信息：

　For this step you probably should assemble the electronics on a solderless breadboard before soldering them together. The schematic to build the circuit is attached along with the hex file to load on the microcontroller. The Arduino - 0007 code file is in the introduction so you can tweak it or make changes as you need.

　It is very important to plan where all of the parts go, so all of the electronics will fit in the box the first time, If not it could be very frustrating and cause much grief.

　It is also important to note that the NPN power transistor(s) will heat up, to overcome this I mounted them to contact the aluminum base of my project box, This way it acts as a heat sink, preventing a spectacular fire. You will also need to come up with something similar to remove most of the heat from the box.

　Once the electronics are built, there is a section of code in the program to uncomment and and then load onto the chip to test the orientation of the coils. It pulses the coils off, pulling up, and pushing down, also indicated by the LED. wedding gift

人往高处走，水往低处流

2010年8月25日星期三

corporate gift-DIY磁懸浮玩具的做法(圖解)(第1頁)

corporate gift-DIY磁懸浮玩具的做法(圖解)(第1頁)

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