Analog Electronic Neuron Demonstrator lu.i

The LU.I Neuron Demonstrator https://github.com/giant-axon/lu.i-neuron-pcb is a printed circuit board (PCB), which features a configurable, fully analog implementation of the leaky integrate-and-fire neuron model. It visualizes the membrane potential through a VU-meter-style chain of LEDs. Multiple lu.i boards can be connected to form simple neural networks. For more information, please check-out our publication about Lu.i: http://doi.org/10.1016/j.tine.2025.100248

The primary aim of the board is to serve as a "graspable" demonstration of a highly simplified building block of an analog spiking neural network, working in "decelerated real time", so that the operation is visible to the naked eye.

BrainScaleS for research

For research we offer the BrainScaleS system. This system features 512 neuron circuits per chip with complex dynamics and parameters to tune the neurons, operating at 1000x real time. Each neuron circuit integrates synaptic stimuli from a column of 256 plastic synapses and on chip programmable plasticity rules. To get access to the system (free of charge for testing), please follow the procedure described on the getting access page.