UBC Bionics · GRASP 3.0·Sep 2026 – PresentIn progress

EMG Signal-Acquisition PCB

ADS1292-based EMG board for the GRASP 3.0 prosthetic arm, designed from schematic to layout in Altium.

Redesigning the EMG board for GRASP, a smart prosthetic arm that reads muscle activity to drive movement. The work started with an evaluation of the previous-generation board and is now a rebuild of the analog front end (instrumentation amplification, filtering, gain staging and ADC biasing) for reliable acquisition of low-amplitude (µV–mV) EMG signals.

Highlights

Developing an ADS1292-based EMG PCB from schematic to layout in Altium Designer
Designing the SPI interface between the ADS1292 and microcontroller, including chip-select and data-ready signalling
Diagnosed instrumentation-amplifier saturation on the previous board by injecting test signals and probing stage-by-stage test points with an oscilloscope

Gallery

More photos coming soon