Andy Brief
Published October 29, 2024
Muscle/brain sensing
My 2nd PCB
EMG board I made
OpenBCI EEG experiments
Body Area Networks — power and data over skin
Inspiration
Body-channel transmission: lock that detects the user's identity
Power-over-Skin: Sending 100-1000 µW using the body as a wire
Powering wearables that don't need a battery
calculator powered over skin
3D printed optics
Custom resin printed lens, done on the SL1
Postprocessing, lens redirects light into a diagonal line
Continuous lens, technically a caustic lens
Another caustic lens showing the mona lisa
Resin printed lens, -1 prescription (my right eye)
same mounted in glasses, unprocessed
Energy-harvesting sensors
Continuous glucose monitor that I took apart, consumes ~25uW
Solar panels work through skin (and ham), roughly 0.5mW/cm2 in direct sunlight
DIY PCBs
Laser etched PCBs
Laser etching PCBs
