Buildable, honest DIY guides for memristor and optical neurons — synapses you can grow on a bench from light, copper, lasers, and resonance. Each guide climbs an honest tier ladder: a real working build today → genuine non-volatile memory → chromatic and learning. Bright, low-tech-first, build-to-a-standard.
A synapse whose weight is written by light and whose inputs are encoded by color. LDR photoresistors → ZnO persistent-photoconductivity memristor → prism-split chromatic weights.
Open guide →The cheapest real optical synapse on Earth — flame-oxidize copper to grow Cu₂O, a light-programmable memristor for about $5, a torch, and a multimeter.
Open guide →Neurons that attune to each other by vibrational resonance — like tuning forks. Coupled 555 oscillators → tuning forks & piezo → a self-attuning Hebbian network (Kuramoto in your hands).
Open guide →A real perceptron built from light: two colored lasers as inputs, photoresistors as weights, a prism to route by color, a comparator to fire. Trainable to AND / OR optically.
Open guide →