What I did:
- Programmed the MCU (code can be found here) to connect with my phone via Bluetooth through the LightBlue BLE test app.
- The MCU now sends accelerometer data to the phone (we have tested from 0.1 times/sec to 1 time/sec), and can receive vibration commands from the phone.
- Programmed the MCU to deploy these vibration commands to the LRA.
- Added mux functionality to this code.
- Createdan encoding scheme that encodes the vibration command and the LRA it should be sent to.
- Now we can send commands to the two LRAs in the device (necessary to provide vibration feedback to both sides of the leg). Created a suite of vibration test commands for LRA feedback testing.
- Added mux functionality to this code.
- Wrote up documentation for how to program the MCU with this functionality, so each team member can interface with the Bluetooth communication independently.
- Tested the vibration feedback from the LRAs along with Rhea.
- The LRA feedback was too faint to detect a difference among the different vibration commands, Rhea is focusing on getting greater power through to the LRA to increase its intensity.
On schedule?
I’m on schedule according to our Gantt chart. I have successfully programmed the IMU with bluetooth for IMU to laptop communication, and created test commands for the laptop -> LRA device pipeline.
Next week’s deliverables:
- Integrate IMU output into FPA estimation algorithm
- Test LRA feedback intensity
- Set up device on participant (one of our teammates), test feedback efficacy with no FPA estimation algorithm refinement