Category Archives: velostat

Flex PCBs Make Force-Mapping Pressure Sensor for Amputee

What prosthetic limbs can do these days is nothing short of miraculous, and can change the life of an amputee in so many ways. But no matter what advanced sensors and actuators are added to the prosthetic, it has to interface with the wearer’s body, and that can lead to …read more

Continue reading

Posted in amputee, contests, flexible circuit board, matrix, misc hacks, multiplexer, pic, piezoresistive, prosthetic, sensor, shift register, transducer, velostat | Leave a comment

Hi-Res, Body-Sized Pressure Sensor Mat

Hackers often find uses for pressure sensitive materials, detecting footfalls during walking or keypresses in a synthesizer being two examples. [Marco Reps] decided he’d make a hi-res, body-sized pressure sensitive mat mainly for computer-guided physiotherapy, though he wouldn’t rule out using it for gaming (twister anyone?). That meant making the equivalent of a body-sized matrix circuit of around 7000 sensors, as well as a circuit board with a multitude of shift registers. The result has a surprisingly good resolution, capable of making clearly distinguishable the heel, arch and front part of a foot.

His choice of pressure sensitive material was  …read more

Continue reading

Posted in misc hacks, shift registers, velostat | Leave a comment