HardLabs

Skulljack

ultimaterobotics·skulljack·PCB/skulljack_1_3.kicad_pcb

Skulljack PCB layout, top view — open source Nordic nRF board by ultimaterobotics

About the Skulljack PCB

Skulljack is an open source Nordic nRF PCB design by ultimaterobotics, published on GitHub under the MIT license. It is a 2-layer board measuring 40 × 34.6 mm, with 66 components from 29 distinct parts.

Its main chip is the nRF52832-QFxx, from the Nordic nRF family. Other key parts include the SIP32509DT-T1-GE3, MCP1700-3302E_SOT23, LM321, MCP3912 and MCP73812T-420I-OT. By type, the board carries 24 capacitors, 13 connectors, 11 resistors, 8 ICs, 3 diodes and 2 switches.

Main components on the Skulljack

SIP32509DT-T1-GE3MCP1700-3302E_SOT23LM321MCP3912nRF52832-QFxxMCP73812T-420I-OT

Skulljack bill of materials (BOM)

66 components, 29 distinct parts.

QtyPartRefs
1
SIP32509DT-T1-GE3
IC1
2
MCP1700-3302E_SOT23
U1, U5
1
LM321
U2
2
MCP3912
U3, U4
1
nRF52832-QFxx
U6
1
MCP73812T-420I-OT
U7
1
Crystal_GND24
Y1
1
USB_B_Micro
J1
11
Conn_01x01_Female
J2, J3, J4, J5, J6, J7, J8, J9 +3
1
Conn_01x04
J13
3
Conn_01x01_Male
BAT+1, BAT-1, PWM_out1
1
SW_SPDT
SW1
1
SW_Push
SW2
2
BAV70S
D1, D2
1
LED_ARGB(a3)
D3
1
3.9 nH
L1
6
120 nF
C1, C10, C11, C17, C21, C25
9
1 uF
C2, C5, C6, C7, C12, C13, C18, C20 +1
2
NCA0805X5R104K16TRPF
C3, C4
2
120 nF (NP0)
C8, C9
Show 9 more
QtyPartRefs
2
12 pF
C14, C15
1
0.8 pF
C16
1
100 pF
C19
1
4.7 uF
C23
2
YC124-JR-073K3L
R1, R2
3
510k
R3, R9, R10
2
100k
R4, R11
3
2k
R5, R6, R7
1
15k
R8

Skulljack design files

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

Skulljack: common questions

What microcontroller does the Skulljack use?

The Skulljack is built around the nRF52832-QFxx, from the Nordic nRF family.

How big is the Skulljack PCB?

The Skulljack measures 40 × 34.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Skulljack?

66 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Skulljack design files?

From the ultimaterobotics/skulljack repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Skulljack design in my own project?

Yes, under the terms of its MIT license, which ultimaterobotics chose for the repository.

Can I test firmware for the Skulljack without the hardware?

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

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