Sip'n Puff Ipod Dock
Here is an example using the Sip'n Puff Arduino shield to make an Ipod dock. The Sip'n Puff Arduino shield is currently a Kickstarter project. If you like this project and would like to see more products like this one, please support our project on Kickstarter and tell all your friends about it.
Note that prototype shown is not stackable. The final
release version will be stackable.
The Ipod dock is controlled by sipping and puffing into the tube connected to the Sip'n Puff Arduino shield in the following manner.
| 1 Sip or Puff | Pause/Play |
| 2 Puffs | Track Skip Forward |
| 2 Sips | Track Skip Backward |
| 3 Puffs | Volume Up |
| 3 Sips | Volume Down |
This example is built using the 3G accessory protocol in simple remote mode. This should work on any Ipod 3rd generation or higher. In this example I used a 5th generation classic Ipod. I'm not sure if the 3G protocol will work with the current touch Ipods or IPhones.
Before you can send commands to your Ipod, you will need a few simple pieces of hardware. The first is a PodBreakout board (unless you can solder .5mm pitch direct to an Apple connector. The PodBreakout can be found at podgizmo.com or other on-line electronic stores You will also need a 500k Ohm resistor to indicate to the Ipod that it has a dock connected to it. This resistor connects to the Ipod hardware indicator (pin 21). I used two 1M Ohm in parallel since I had them on hand. The only other thing to consider is that the Ipod is 3.3V and your Arduino is 5V. To solve this problem create a voltage divider with a 10K Ohm and 33K Ohm resistor. Connect the voltage divider to the Ipod rx (pin 13). Hook up your serial GND to Ipod pin 11 and you're done.
Note that the drawing does not show Sip'n Puff shield.
It uses analog pin 5.
The complete circuit with Sip'n Puff shield.
The Ipod uses a standard N,8,1 serial port running at 19200 baud. Once you have this setup, you can start sending the following packets to control your Ipod.
| Pause/Play | 0xFF 0x55 0x03 0x02 0x00 0x01 0xFA |
| Skip Forward | 0xFF 0x55 0x03 0x02 0x00 0x08 0xF3 |
| Skip Backward | 0xFF 0x55 0x03 0x02 0x00 0x10 0xEB |
| Volume Up | 0xFF 0x55 0x03 0x02 0x00 0x02 0xF9 |
| Volume Down | 0xFF 0x55 0x03 0x02 0x00 0x04 0xF7 |
You can get the source code for the Ipod Sip'n Puff dock from our Github page, located here.
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help support this project on KickStarter
