The Firefly Ice development enclosure is a very simple 3D printed enclosure that will be used to protect the PCBA while testing it out in real world scenarios. This enclosure is easy to take apart for reprogramming the PCBA via the ARM SWD pads. The custom parts are very inexpensive to produce in small quantities via 3D printing services such as Shapeways.
The renderings below show the Firefly Ice development enclosure along with some of the internal parts. The PCB is represented by the green shape. LEDs and Micro USB port are visible in the top view. The coin cell battery option is visible in the bottom view.
Printed Circuit Board Assemblies
The first 10 Firefly Ice prototype printed circuit board assemblies (PCBA) have been ordered. All the components have arrived and the printed circuit boards are currently being fabricated. The complete PCBAs are scheduled to arrive in early April. The hardware will then be tested for functional correctness and expected power consumption. If revision is required, another prototype build will be started at the end of April.
A very simple 3D printed enclosure will be used to protect the PCBA while developing the device and testing it out in real world scenarios. This enclosure will be very easy to take apart for reprogramming the PCBA via the ARM SWD pads. These will be very inexpensive to produce in small quantities via 3D printing services such as Shapeways.
Once the hardware is checked out, the development focus will shift to the firmware, data uploading app, and cloud storage.
The Firefly Activity Monitor project is developing an open source activity monitor. The electronics, mechanicals, firmware, uploading, and cloud storage are all open source.
The first design produced, the Firefly Ice, is intended to be a general purpose device that can be used to develop the whole flow through the basic system. When all the hardware and software is complete for this first design then more variants will be produced. Two new variants under consideration are a small low cost version and a very thin waterproof version.
The Firefly Ice activity monitor will have the following features:
Adult oriented activity monitors have become quite popular. Nike+ FuelBand, Jawbone Up, FitBit, and many more. These are great devices and they do track more than just steps. However, their primary focus is adult oriented exercise.
There are many more applications for activity monitors.
And of course activities that aren't about people:
Can you use the Nike+ FuelBand, Jawbone Up, FitBit, etc, for all of these applications? The answer is a clear no. Those devices record very specific information that won't work for these other applications. None of those devices allow their firmware to be changed for other purposes. All of those eco-systems have their own methods for transferring data to their cloud, storing the data in their system, and accessing it via their APIs.
The Firefly Activity Monitor project is developing an open source activity monitor. The electronics, mechanicals, firmware, uploading, and cloud storage are all open source. Nothing is locked behind any vendor's proprietary eco-system. Pre-built Firefly hardware will be available. You can change the firmware for your application. The hardware can be modified to suit your needs. Add new sensors, change the power system, use a different radio. Create new form factors: wrist band, band-aid, or a pebble for your pocket.