by Neuralaxy

An open source neurostimulator for students, researchers, and hobbyists interested in neuroscience

View all updates Apr 22, 2021

Adding Functionality to the Library

by Nikunj Bhagat

This week we continued to develop the NeuroStimDuino library by adding more functions and capabilities. NeuroStimDuino can now measure its own current output from both channels, thanks to its on-board current sense amplifier (TSC2012).

Below we have shown traces of NeuroStimDuino’s current outputs for different amplitude settings. The stimulation duration was set at 500 microseconds and the waveform shape can be set as symmetrical or asymmetrical. Most importantly, we are sampling the current output at a high frequency (20kHz) so as to maintain sufficient signal fidelity. From the waveform it’s clear that NeuroStimDuino can generate about 50 mAp-p current at the maximum setting, which is more that enough for most neurostimulation experiments.

Signal traces were obtained above by averaging 10 trials for each amplitude setting in order to minimize background noise.


For bench testing like the above, you should ensure that your batteries are fully charged. We used two 18650s, connected in series, and the DC voltage was 8.31 V

About the Author

Nikunj Bhagat

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Product Choices



One NeuroStimDuino board and a pair of 2-mm, pin-style lead wires for use with standard, reusable, hydrogel-based stimulation electrodes. Includes a battery holder but does not include batteries.


NeuroStimDuino Accessory Pack

Four 1.25-inch round and four 2-inch square hydrogel electrodes, a pair of lead wires, and a pair of bifurcation cables



Neuralaxy LLC is an early stage neurotechnology company based in Delaware, US. Its mission is to develop therapies that help patients suffering from paralysis and neuromuscular diseases, to recover their independence as well as lead a healthy, fulfilling life.

Nikunj Bhagat

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