An Open Source, Bluetooth Alcohol Detector Accessory for Android Phones. For Entertainment Use Only. Read more
This project's funding goal was not reached on April 4, 2012.
About this project
The Droidalyzer is an open source, Bluetooth alcohol detector accessory for Android Phones. After pairing the device to your phone using Bluetooth, breathe into the device's alcohol sensor and then check your alcohol level from your phone.
Note: The Droidalyzer is a novelty device, it is NOT calibrated to be a professional Breathalyzer and/or medical device and is for entertainment use only.
After each alcohol reading, you’re prompted with various options such as calling a preset designated driver, calling a taxi, finding nearby friends and places (using Facebook integration), and even a random drunk dial option if you’re feeling adventurous. It does not output a blood alcohol content (BAC) reading and instead plays different audio responses relative to alcohol levels with four character voices to choose from. The voices were done by a professional voice actor.
What's the money for?
The project is pretty far along meaning the hardware design, prototype, and Android app are all completed. Backers of this project will be helping to create the first manufacturing production run of the Droidalyzer.
The device in the Altoids tin you see in the video is a prototype. The production version offered in the rewards will fit into this smaller generic mint tin case of dimensions 1.43" x 3.35" x 0.8". Cut outs in the case for the on/off switch, USB connector, charging port, and alcohol sensor are laser cut.
There is a re-chargeable Lithium-ion polymer (LiPo) battery underneath the board. You can also see the Bluetooth dongle which is off the shelf.
Here's the charging port. Use any standard USB charger with a mini USB connector.
The Droidalyzer is not only open source but expandable as it’s also a full blown IOIO ("pronounced yo-yo") board. Think of IOIO as like the Arduino but designed and optimized for Android. Ytai Ben-Tsvi, the creator of IOIO, was kind enough to allow us use IOIO in the Droidalyzer product. The Droidalyzer will ship with female headers pins for the general purpose IOIO pins.
Close up of the Droidalyzer board, technical details here
You can check out the functionality of the Android Droidalyzer app by getting it from the Android Market here or scan the QR below from your Android phone. Of course, it will not detect any actual alcohol without the Droidalyzer hardware but you can run the app in simulation mode now to check out what it will do.
As of now, the Droidalyzer is only available on the Android platform. You’ll need an Android phone with version 2.3.3 or higher for full functionality with Bluetooth connectivity (currently not compatible with Android Honeycomb tablets). Android 1.6 and above will also work but you’ll need to connect the device with a USB cable as opposed to Bluetooth. In theory, the same hardware can also work on an iPhone BUT special approval is required from Apple to do hardware accessories which we have yet to receive so it's Android only for now.
The raw cost of the Droidalyzer in parts is $33 + $8 shipping = $41. Our goal was to make it as affordable as possible so we've left the mark up pretty small at $60 for your cost which includes shipping.
- Small form factor, easily fits in your pocket
- Includes a re-chargeable battery to be used with a standard USB charger with a mini USB connector (charger not included)
- Upgradeable firmware via USB port
- Mouth piece not required to keep things sanitary when sharing the alcohol detector among friends
- Fully hackable and expandable as a fully functional IOIO board
Android App Features
- Four selectable characters (old english gentleman, pirate, spooky, and mean guy) who speak the alcohol detection results in their own personality
- Integration with Facebook and Twitter
- Functions to call a friend, find a friend, or taxi after alcohol detection results
- Random drunk dial (only shows up if you’ve had too much)
- Verbal alcohol detection responses can also be personalized using Text to Speech
- Language support for English, French, Spanish, and Simplified Chinese
Thanks for taking the time to read about this project. You can find out more about the Droidalyzer at http://droidalyzer.com
No, the Droidalyzer is a novelty device and while it does contain a semiconductor based alcohol sensor, it is not calibrated to output BAC and should be used for entertainment purposes only.
Since it's open source, technically you could modify the source code, attempt to calibrate the sensor, and then add a BAC reading. We highly recommend not to do this however and we purposely did not go here as reports http://droidalyzer.com/files/Evaluation_of_Consumer_Breath_Alcohol_Analyzers.pdf have shown that while semiconductor based alcohol sensors are acceptable for detecting the presence of alcohol in human breath, they are not accurate enough for a precise BAC reading. If you want BAC, best to look into a professional Breathalyzer with a fuel cell based alcohol sensor, this is the technology used by law enforcement.
You'll need an Android phone with Android version 2.3.3 or higher to use the Droidalyzer in Bluetooth mode. Android 2.1 and above will also work over Bluetooth but you'll need to enter the Bluetooth pairing pin for each session (kind of a pain). Bluetooth will NOT work for Android 1.6 up to 2.1, for these devices you'll instead connect the Droidalyzer to your phone with the included USB cable. As each Android device manufacturer does things a little different, we cannot guarantee 100% compatability across all Android phones but we can say most phones will work. You can reference this list http://droidalyzer.com/phones.html and see if your specific device has been tested. Also note that Android Honeycomb tablets are not supported at this time.
IOIO is the name of the open source microprocessor board used by the Droidalyzer. If you are familiar with the Arduino, it's similiar but specialized for the Android platform. This means that with a little tech know how, the Droidalyzer can be expanded to do other things using additional sensors. IOIO (pronounced yo-yo) was created by Ytai Ben-Tsvi, Ytai was kind enough to allow us to use IOIO in this project. More info on IOIO here https://github.com/ytai/ioio/wiki
Not at this time, we'd love to do an iPhone app but special permission is required from Apple to make an iPhone hardware accessory. Apple unfortunately has not approved our application.
Yes, there is a Text to Speech mode where you can enter your own response for each of the four alcohol levels.
No worries, just get a replacement USB bluetooth dongle. Note that not all Bluetooth dongles are compatible so choose one of these which have been tested https://github.com/ytai/ioio/wiki/IOIO-Over-Bluetooth.
Assuming normal use meaning you turn it off when not in use, it should last 2 or 3 nights when used on nights out with friends. There is also a battery indicator on the Droidalyzer app.
Yes, the alcohol sensor model number is MQ303A, you can buy a replacement here and just plug it in http://www.seeedstudio.com/depot/alcohol-sensor-mq303a-p-549.html…
One Droidalyzer unit in a laser cut mint tin with Bluetooth, a re-chargeable battery, and a micro USB cable. Shipping is also included. A USB charger for the battery is not included, you can use any standard USB charger with a micro USB connector such as this one http://www.amazon.com/Motorola-Mini-Wall-Charger-Phones/dp/B0009H2M1Y
Pair it like any other Bluetooth device through Settings --> Wireless & Networks --> Bluetooth Settings --> Scan for Devices. Look for IOIO and then enter 4545 as the pairing code. Here's a video illustrating the setup https://vimeo.com/38714011
- (30 days)