One synapse electronic

RepRapLtd·AnalogueNeuralNet·Electronics/one-synapse-electronic-A/one-synapse-electronic/one-synapse-electronic.kicad_pcb

One synapse electronic PCB layout, top view — open source board by RepRapLtd

About the One synapse electronic PCB

One synapse electronic is an open source PCB design by RepRapLtd, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 93 × 73.5 mm, with 137 components from 25 distinct parts.

Other key parts include the TLC5940PWP and MCP6004. By type, the board carries 80 resistors, 23 capacitors, 17 transistors, 9 connectors, 6 ICs and 1 jumper.

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.

One synapse electronic, from the project README — From the project README

Main components on the One synapse electronic

TLC5940PWP MCP6004

One synapse electronic bill of materials (BOM)

137 components, 25 distinct parts.

Qty	Part	Footprint	Refs
1	TLC5940PWP	HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm_Mask2.4x6.17mm_ThermalVias	U1
5	MCP6004	HTSSOP-14-1EP_4.4x5mm_P0.65mm_EP3.4x5mm_Mask3x3.1mm	U2, U3, U4, U5, U6
17	BS170F	SOT-23	Q1, Q17, Q18, Q19, Q20, Q21, Q22, Q23 +9
1	prg-err	PinHeader_1x02_P2.54mm_Vertical	J1
2	Axon	PinSocket_1x08_P2.54mm_Vertical	J2, J3
1	PWM-in	PinHeader_1x07_P2.54mm_Horizontal	J4
1	PWM-out	PinSocket_1x07_P2.54mm_Horizontal	J5
1	pwr	PinHeader_1x02_P2.54mm_Vertical	J6
1	synapses	PinHeader_1x08_P2.54mm_Vertical	J7
1	sel	PinSocket_1x04_P2.54mm_Vertical	J9
1	comb	PinSocket_1x03_P2.54mm_Vertical	J10
1	sj	SolderJumper-2_P1.3mm_Bridged2Bar_Pad1.0x1.5mm	JP1
1	LED	LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D1
6	0.1uF	C_0805_2012Metric	C1, C18, C19, C20, C21, C22
16	120nF	C_0805_2012Metric	C2, C3, C4, C5, C6, C7, C8, C9 +8
1	10uF	CP_Radial_D8.0mm_P2.50mm	C24
1	2K2	R_0805_2012Metric	R1
16	47K	R_0805_2012Metric	R2, R3, R4, R5, R6, R7, R8, R9 +8
9	10K	R_0805_2012Metric	R17, R18, R19, R20, R21, R22, R23, R24 +1
8	1M	R_0805_2012Metric	R25, R26, R27, R28, R29, R30, R31, R32

Show 5 more

Qty	Part	Footprint	Refs
17	220R	R_0805_2012Metric	R34, R35, R36, R37, R38, R39, R40, R41 +9
9	22K	R_0805_2012Metric	R50, R71, R72, R73, R74, R75, R76, R77 +1
8	470K	R_0805_2012Metric	R51, R52, R53, R54, R55, R56, R57, R58
10	220K	R_0805_2012Metric	R59, R60, R61, R62, R63, R64, R65, R66 +2
2	100K	R_0805_2012Metric	R67, R68

One synapse electronic design files

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

One synapse electronic: common questions

How big is the One synapse electronic PCB?

The One synapse electronic measures 93 × 73.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the One synapse electronic?

137 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the One synapse electronic 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 One synapse electronic 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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