The LED on each Sensor Dot informs you on the status of the device and if any actions should be taken. When an experiment was setup in the Composer, the LED color will be the color that was assigned automatically. This color is referred to as ‘role color’ in the below animations.
|While in the dock||While out of the dock|
|Charging (slow blinking - blue)||Connected to Composer (role color)|
|Fully Charged (solid - blue)||Recording (double blink - role color)|
|Transferring Data (solid - red)||Idle (single blink - role color)|
|Resetting (off)||Low Battery (slow blinking - red)|
When you notice a noisy signal in the Composer livestream, here are some actions that might help you improve the quality:
If you want to know more on how to obtain high quality signals for your prototype, feel free to submit a support ticket.
We are working on the Scope app that will help you automatically visualize your data. It’s not ready to be released yet, but we will keep you posted about our progress. In the meantime, please review the instructions below to get started right away.
As we provide you with the raw data of your experiments, you can plot them in your favorite software (Python, R, Matlab, Graphpad Prism etc.) or in the open-source kst-plot tool that can be downloaded here*.
Select the appropriate link for your operating system, click the green Clone or download button on the GitHub page, download the zip and open the kst2 application.
*We are not affiliated in any way with the developers of kst-plot.
First, you need to enroll your Sensor Dots.
Enrollment is a one time process and one of the first steps in Getting Started with your Byteflies kit. Enrollment associates your Sensor Dots with your Byteflies account and it ensures that all of your data is connected to and accessible from your account. The next steps are necessary for now, but in the next versions the enrollment process will become automatic.
Now you can start creating your experiments and measure signals.
To start measuring signals, you need to assign a role to the Sensor Dot in the Composer application. These are specific configurations that determine which physiologic signals are recorded simultaneously by a single Sensor Dot. Available roles are: Electrocardiogram (ECG), Respiration (RES), Photoplethysmography (PPG) and Inertial Motion Unit (IMU).
Depending on the role you assign to a Sensor Dot in the Composer application as explained here, different combinations of signals will be measured. We will gradually enable customized configurations of these roles, so check back from time to time.
The ECG Role records the following signals, and should be used with the ECG/RES Patch:
The RES Role records the following signals, and should be used with the ECG/RES Patch:
The PPG Role records the following signals, and should be used with the PPG Patch:
The IMU Role records the following signals, and should be used with the IMU Patch:
After you decided on the signal that you want to measure, you need the complementary patch that enables the Sensor Dot to capture it. Byteflies patches are adhesive, disposable mounts that connect a Sensor Dot to the body and the Sensor Dot connects magnetically to the patch. Each patch is compatible with one or more roles which is explained here. Neither Patches nor Sensor Dots are currently waterproof. Do not shower or bathe with either!
When placing a Sensor Dot into a Patch, pay attention that the connection is magnetic and only one orientation is allowed.
The patches can be mounted anywhere on the body, but some signals can only be recorded in certain locations.
If you’ve received a wired ECG/RES patch, pictured below, make sure to attach to standard off-the-shelf ECG electrodes.
We recommend placing the short-end electrode on the sternum, and the long-end electrode at a distance of approximately 12-15 cm away from the former as show in the diagram:
The best signal amplitude will be achieved by mimicking a Lead II in a standard 6-lead ECG, which amounts to an angle of approximately 60 degrees relative to the shoulders. This will also work for the respiration Role. Check the Signal Quality guide for more information.
The temporary patch is just that … temporary. You will soon receive disposable ECG/RES patches like this:
They will operate exactly as the wired version but will be disposable and will not require additional ECG electrodes.
The IMU and PPG Patches look quite alike so make sure you grab the right one. The PPG Patch can be distinguished from the IMU patch by the LED array and the bottom. The IMU patch, on the other hand, has no sensor array in the opening. When in doubt, place a Sensor Dot configured as a PPG Role in the Patch. If it’s a PPG patch you will see a green and red LED light up. In theory, the PPG Patch can be placed anywhere but we recommend the following locations for best signal quality:
Note that both skin-tone and body type may influence the quality of the signal and some experimentation may be needed. Check the Signal Quality guide for more information.
The IMU Patch is a simply adhesive mount. It’s placement is completely dependent on the application:
Note that areas of high impact (e.g. ankles during running) may show increased signal saturation. Check the Signal Quality guide for more information.
Yes, your Sensor Dots will continue recording while you proceed with other things. You can open the Composer application again at any time during an ongoing experiment to verify the livestream(s) and add notes. Make sure all your Sensor Dots are in range of the docking station if you want to start/stop a recording.
For now, we recommend to wear the disposable patch for a maximum of 24 hours. We are continuously optimizing our system, so patches will become available that can be worn for prolonged periods of time.
You can order or request a quote for your Byteflies Exploration Kit here. The following information is requested:
You can pay by credit card or bank transfer. The Byteflies VAT number is BE 0628.669.272.
The battery needs 3 hours to fully recharge when it was completely empty.
The Sensor Dot can be gas sterilized or wiped down with disinfectant.
Yes, you need an internet connection to login, create and stop new experiments. If you are logged in, and an experiment is already running, you can start and stop recordings, add notes and view the livestream without an internet connection.