Design of a Wireless EMG System By Konstantin
Design of a Wireless EMG System By: Konstantin Avdashenko Advisor: Dr. Shane Cotter
Electromyograms http: //podiatry. temple. edu/gaitlab/facilities/images/emg_1. gif Myo = pertaining to muscle Measurement of electric potential Large or outdated
Flowchart Design device Test, repeat design if fails Code, until it works then Celebrate. Design device Works? Program Works? Celebrate!
Schematic Design 1. 0 USB ICSP PIC 32 n. RF 2401+ Antenna pad CMOS clocks PIC 32 Antenna n. RF CMOS Clock
Board Design 1. 0 Creating Parts Auto-route woes Rejection, nonconformism
Lessons Learned Don't bother reinventing the wheel, Use the Sparkfun package. No Autoroute, too much time wasted. No traces running all over the place. Triple check everything Learn from others mistakes And last and most importantly, Follow KISS
Second Revison Implemented Sparkfun Package. Followed application notes carefully. Added Lithium Ion power. Implemented a PIC 18 F 4550. No CMOS clocks. Added expansion port. 2. 4 GHz chip antenna implemented. LED's for feedback. Holes for mounting.
Schematic Rev. 2 USB/ICSP Frames Power/Icsp/USB/Con trol Expansion Crystal PLL Page 1 Power Expansion Crystal To: n. RF Wireless EMG Red/Green LED Rev. 2
Board 2. 0 Bigger Fits to a Li-Ion battery to lay flush. Can be woven to fabric with mounting holes.
Coding adventures!!! Capable of communicating with n. RF 2401+ Open. Beacon USB functioning
Acknowledgements Dr. Shane Cotter Conor O' Reilly Joshua Hernandez Travis Hoh Demarcus Hamm Milosch Meriac EE Dept Sparkfun
Schematic Design 1. 0 USB ICSP PIC 32 n. RF 2401+ Antenna pad CMOS clocks PIC 32 Antenna n. RF CMOS Clock
PCBoard 1. 0
Schematic 2. 0 - Page 1
Schematic 2. 0 - Page 2
Board 2. 0
Breadboard layout
Prototype
- Slides: 18