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Op Amp Testing
10/22/2018 at 13:37 • 0 comments -
Checking Out Flexible PCB
10/22/2018 at 13:35 • 0 commentsChecking out flexible pcb options when we're ready to custom design our own pcb for a wearable form factor
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Testing Op Amps
10/22/2018 at 13:30 • 0 comments -
No Function Generator, No Problem
10/22/2018 at 13:25 • 0 commentsGenerating a sine wave from Youtube in place of a wave generator
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Developing Active Sensors
10/22/2018 at 13:24 • 0 commentsInitial testing with the Olimex active sensor
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From 2-channels to 4-channels
10/08/2018 at 19:31 • 0 commentsWe've been working on the mobile prototype and have moved from MyoWare to OpenBCI as our biosensing unit to increase the number of channels from a 2-channel board to a 4-channel board. The more sensors and channels we can get data from will increase the predictive power of our model.
A basic case for this unit was designed and uploaded as Files.
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Adding casings for the sensor board
08/27/2018 at 01:26 • 0 commentsWith a decent sensor board in place giving us some predictive power, Taylor designed new casings for the portable prototype.
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Successful EMG sensor board trial
08/26/2018 at 03:58 • 0 commentsOur final choice was MyoWare for the sensor board. We were able to get 2 channels for EMG signal + ground that gave us some predictive power.
Please check out our Github repo. Wesley uploaded some code for the Arduino side and Python code for the receiving side being placed on the workstation.
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Improving the portable prototype with 'EMG CLICK'
08/26/2018 at 03:49 • 0 commentsOur next step was to try 'EMG CLICK' as an EMG sensor board. Unfortunately we did not have any luck with this. Perhaps we did not put enough time into exploring this.
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3D modeling casing for portable prototype
08/26/2018 at 03:23 • 0 commentsAfter verifying the proof of concept with stationary data acquisition jig, we are ready to move on to prototyping a portable solution. We started 3d printing enclosures for the WiFi chip ESP8266 and microphone amplifier KY038.
I have 3D modeled several versions and 3D printed to try out.
Didn't want to add too much complexity to the prototype so just used a simple top and bottom piece which clips together, while the wires will be run from the back.
Result: It gave mediocre results for sound acquisition and results were not great for converting the microphone amplifier KY038 into an EMG amplifier.