HardLabs

Alleycat

hextral·alleycat·kicad/alleycat.kicad_pcb

Alleycat PCB layout, top view — open source Nordic nRF board by hextral

About the Alleycat PCB

Alleycat is an open source Nordic nRF PCB design by hextral, published on GitHub. It is a 2-layer board measuring 225 × 136 mm, with 115 components from 31 distinct parts.

Its main chip is the nRF52840_holyiot_18010, from the Nordic nRF family. Other key parts include the TP4056, DW01A, FS8205, SRV05-4 and XC6206PxxxMR. By type, the board carries 46 diodes, 11 resistors, 8 capacitors, 6 ICs, 3 switches and 2 connectors.

It belongs with the iot & wireless designs in this gallery.

From the project

yooo

- wireless - split - oled support - triple encoder support (4 without joystick) - 3ds joystick nip - optional fn row

- firmware is zmk - uses nRF52840 in the E73-2G4M08S1C package

Main components on the Alleycat

nRF52840_holyiot_18010TP4056DW01AFS8205SRV05-4XC6206PxxxMR

Alleycat bill of materials (BOM)

115 components, 31 distinct parts.

QtyPartRefs
1
nRF52840_holyiot_18010
U1
1
TP4056
U2
1
DW01A
U3
1
FS8205
U4
1
SRV05-4
U5
1
XC6206PxxxMR
U6
1
Conn_01x04_Male
J1
1
USB_C_Receptacle_USB2.0
J2
1
Polyfuse_Small
F1
36
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +28
1
MX-NoLED
MX36
1
RKJXT1F42001
S1
1
SW_Push
SW1
1
RotaryEncoder_Switch
SW2
43
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +35
2
LED
D38, D39
1
D_TVS
D43
1
L
L1
1
10uf
C1
3
100nf
C2, C3, C8
Show 11 more
QtyPartRefs
2
4.7uf
C4, C5
2
1uf
C6, C7
2
2.7k
R1, R2
1
1.8k
R3
1
3.3k
R4
1
22k
R5
2
5.1k
R6, R7
1
100
R8
1
1k
R9
1
806k
R10
1
2M
R11

Alleycat design files

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

Alleycat: common questions

What microcontroller does the Alleycat use?

The Alleycat is built around the nRF52840_holyiot_18010, from the Nordic nRF family.

How big is the Alleycat PCB?

The Alleycat measures 225 × 136 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Alleycat?

115 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Alleycat design files?

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

Can I use the Alleycat design in my own project?

The repository has no license, so all rights stay with hextral. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Alleycat 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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