Crosspoint switches

RepRapLtd·AnalogueNeuralNet·Electronics/Crosspoint-AANN/crosspoint-switches/crosspoint-switches.kicad_pcb

Crosspoint switches PCB layout, top view — open source board by RepRapLtd

About the Crosspoint switches PCB

Crosspoint switches is an open source PCB design by RepRapLtd, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 31 × 31 mm, with 16 components from 10 distinct parts.

Other key parts include the ADG2188 and 74LVC1G175. By type, the board carries 5 connectors, 4 diodes, 3 capacitors, 2 ICs and 2 resistors.

From the project

Project to make a photonic neural network using photochromic material for the synaptic weighting adjustments

This is a project to create a neuromorphic analoge neural network. I wanted to get away from using conventional computers (including parallel graphics processors) to do neural simulations and to make something that is a lot more like a real brain.

What I propose is similar to the early work on perceptrons by Rosenblatt from the 1950s that has now been all but abandoned because today it’s much easier to solve a problem by writing some software to do it than by designing and building some electronics to do it. Easier maybe, but at least today we have the advantage of 21st Century electronics.

Crosspoint switches, from the project README — From the project README

Main components on the Crosspoint switches

ADG2188 74LVC1G175

Crosspoint switches bill of materials (BOM)

16 components, 10 distinct parts.

Qty	Part	Footprint	Refs
1	ADG2188	QFN50P500X500X100-33N	U1
1	74LVC1G175	SOT-363_SC-70-6_Handsoldering	U2
2	Conn_01x16_Pin	PinSocket_1x16_P1.27mm_Vertical	J2, J4
2	Conn_01x16_Socket	PinSocket_1x16_P1.27mm_Vertical	J3, J5
1	Conn_02x03_Odd_Even	PinSocket_2x03_P1.27mm_Vertical	J6
2	LED R	LED_0805_2012Metric	D1, D2
2	LED G	LED_0805_2012Metric	D3, D4
1	4u7	C_0805_2012Metric	C1
2	0.1u	C_0805_2012Metric	C2, C3
2	R470	R_0805_2012Metric	R1, R2

Crosspoint switches design files

The KiCad project lives in the RepRapLtd/AnalogueNeuralNet repository on GitHub; these links point at the commit this page was built from.

Crosspoint switches: common questions

How big is the Crosspoint switches PCB?

The Crosspoint switches measures 31 × 31 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Crosspoint switches?

16 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Crosspoint switches design files?

From the RepRapLtd/AnalogueNeuralNet repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Crosspoint switches design in my own project?

Yes, under the terms of its GPL-3.0 license, which RepRapLtd chose for the repository.

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