Pressure sensor shield for Arduino. Detect positive and negitive air pressure by sipping and puffing. Read more
This project's funding goal was not reached on May 23, 2012.
About this project
The Sip'n Puff shield is a standard shield for the Arduino platform. It is a basic air pressure sensor that detects positive and negative air pressure. The shield gets its name from the similar devices used by persons with disabilities that allow them to sip and puff into a tube to control medical devices. The shield can detect air pressure up to 1.45 PSI which is more than enough to be triggered by sipping and puffing by mouth.
How does it work?
1) Copy the library file into the Arduino folder on your computer.
2) Create a reference to it in your sketch.
3) Start using it.
The library contains a digital mode and analog mode. The digital mode will return a 1 when positive air pressure is applied and a -1 when negative air pressure is applied. If the sensor is neutral, a 0 is returned. The analog mode returns a number that reprsents positive air pressure, or a negative number when negative air pressure is applied. The more pressure applied, the higher the number returned. Less air pressure will return a lower number.
The pressure sensor on the shield has a 3mm outer diameter nipple. Most tubing with a 3mm inner diameter should work. One foot of silicone tubing is included with the sensor.
Where's the code?
Once the project is funded, we will release the final version of the Arduino library and sample code on our Github repository.
Why a Sip'n Puff Shield?
The idea for a Sip'n Puff Shield came about after seeing an article on a DIY site for an xbox control that was made for disabled persons who had no use of their arms. In the article it mentioned that the man making them was older and wanted to retire and there was no one else making special xbox controllers. To us, it seemed that there should be more people building these kinds of controllers, especially in the DIY community. This got the wheels turning and after a quick inventory check, we discovered a few pressure sensors left over from a previous product build that fit the specifications. A few days later, the Sip'n Puff shield was born.
Although we don't personally know anyone who does not have use of their arms or hands, we'd love to see this shield used by the DIY community to help those that do. The shield also has many other uses as well.
- Control your Arduino when your hands are full or it's not practical to use your hands. Such as when both hands are on a RC remote control and you need to control that one extra thing or your hands are busy holding a camera and you need to control something else at the same time.
- Detecting positive or negative air pressure.
- Build a Morse code keyboard or mouth controlled mouse.
- Install it behind your halloween mask to trigger hands free spooky events.
- Create Arduino based projects for persons with disabilities.
- Sip'n Puff Ipod Dock
Some things are just worth doing right. We believe this is one of those things. Currently we have a working prototype which is shown in the video. To do this project right would require making at least 100 shields. Why 100? Air pressure sensors aren't cheap. It takes at least 100 to get a decent price break on all the parts and to make it cost effect for everyone. Silicone tubing is sold on 100ft spools. 100 seems to be a popular number!
Have a question? If the info above doesn't help, you can ask the project creator directly.
- (30 days)