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Wired sculpt

chadaustin·wired-sculpt-pcb

Wired sculpt PCB layout, top view — open source AVR/Arduino board by chadaustin
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About the Wired sculpt PCB

Wired sculpt is an open source AVR/Arduino PCB design by chadaustin, published on GitHub under the TAPR-OHL-1.0 license. It is a 2-layer board measuring 40 × 50 mm, with 35 components from 25 distinct parts.

Its main chip is the AT90USB1286-AU, from the AVR/Arduino family. Other key parts include the USBLC6-2SC6 and LM2776DBVT. By type, the board carries 12 capacitors, 12 resistors, 3 ICs, 2 transistors, 2 connectors and 2 switches.

From the project

KiCad design files for the Wired Sculpt conversion mod

This repository contains the schematic and layout files for the Microsoft Sculpt Wired Conversion Mod.

When I upgraded the 30-pin ribbon connector to one that fit better, it lowered the resistance to the LEDs. This caused me to burn the microcontroller on a test rev3 board by drawing too much current. So the question became: what values are appropriate for "maximum" brightness on both red and green. Today I found that, given a 5.15V VUSB, whatever resistance in the flex cable, and whatever voltage drop on the LEDs, 150 Ohms gives an even brightness on both red and green. Green draws about 15…

Main components on the Wired sculpt

USBLC6-2SC6LM2776DBVTAT90USB1286-AU

Wired sculpt bill of materials (BOM)

35 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
USBLC6-2SC6
STMicroelectronics
U1
1
LM2776DBVT
Texas Instruments
U2
1
AT90USB1286-AU
Microchip Technology
U3
1
1727-1144-2
BSS84AK,215
Nexperia USA Inc.
Q1
1
1727-4789-2
2N7002BK
Nexperia USA Inc.
Q2
1
SER4070
TSX-3225 16.0000MF18X-AC0
EPSON
Y1
1
10103594-0001LF
Amphenol ICC (FCI)
J1
1
FFC3B07-30-T
GCT
J2
1
450-1140
FSMSM
TE Connectivity ALCOSWITCH Switches
SW1
1
455-1719
S2B-PH-K-S(LF)(SN)
JST Sales America Inc.
SW2
1
150080GS75000
Würth Elektronik
D1
1
CL21A475KOFNNNE
Samsung Electro-Mechanics
C1
1
CL21B104KACNNNC
Samsung Electro-Mechanics
C2
1
CL21B103KBANNNC
Samsung Electro-Mechanics
C3
4
CL10A105KA8NNNC
Samsung Electro-Mechanics
C4, C5, C6, C9
2
06035A160JAT2A
AVX Corporation
C7, C8
3
CL10B104KB8NNNC
Samsung Electro-Mechanics
C10, C11, C12
2
ERJ-PA3F22R0V
Panasonic Electronic Components
R1, R2
2
ERJ-PA3J472V
Panasonic Electronic Components
R3, R8
1
ERJ-3EKF8873V
Panasonic Electronic Components
R4
Show 5 more
QtyPartRefs
1
ERJ-PA3J473V
Panasonic Electronic Components
R5
3
ERJ-3GEYJ331V
Panasonic Electronic Components
R6, R9, R10
1
ERJ-3EKF10R0V
ERJ-PA3F22R0V
Panasonic Electronic Components
R7
1
ERJ-PA3J560V
R11
1
ERJ-PA3F22R0V
R12

Wired sculpt design files

The KiCad project lives in the chadaustin/wired-sculpt-pcb repository on GitHub; these links point at the commit this page was built from.

Wired sculpt: common questions

What microcontroller does the Wired sculpt use?

The Wired sculpt is built around the AT90USB1286-AU, from the AVR/Arduino family.

How big is the Wired sculpt PCB?

The Wired sculpt measures 40 × 50 mm, has 2 copper layers and is 0.8 mm thick.

How many components are on the Wired sculpt?

35 components, from 25 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Wired sculpt design files?

From the chadaustin/wired-sculpt-pcb repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Wired sculpt design in my own project?

Yes, under the terms of its TAPR-OHL-1.0 license, which chadaustin chose for the repository.

Can I test firmware for the Wired sculpt without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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