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SF65

ericrlau·SF65·PCB/SF65.kicad_pcb

SF65 PCB layout, top view — open source Nordic nRF board by ericrlau
Simulate this board

About the SF65 PCB

SF65 is an open source Nordic nRF PCB design by ericrlau, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 304.8 × 122.7 mm, with 178 components from 103 distinct parts.

Its main chip is the MDBT50Q-1MV2, from the Nordic nRF family. Other key parts include the TP4054, AP2112K-3.3 and USBLC6-2SC6. By type, the board carries 76 switches, 72 diodes, 11 resistors, 7 capacitors, 4 ICs and 4 connectors.

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

From the project

BLE 65% Mechanical Keyboard With Visible Components

- See ZMK docs for instructions on setting up ZMK and custimizing firmware. https://zmkfirmware.dev/docs/user-setup/ https://zmkfirmware.dev/docs/customization - Default *.uf2 files are pre-loaded on assembled pcbs. If you sourced and assembled your own pcb, you can file deafult pre-built firmware here: - https://github.com/ericrlau/COBO-zmk-config/releases

SF65, from the project README
From the project README

Main components on the SF65

TP4054AP2112K-3.3MDBT50Q-1MV2USBLC6-2SC6

SF65 bill of materials (BOM)

178 components, 103 distinct parts.

QtyPartRefs
1
TP4054
U1
1
AP2112K-3.3
U2
1
MDBT50Q-1MV2
U3
1
USBLC6-2SC6
U4
1
Q_PMOS_GSD
Q1
1
32.768kHz
Y1
1
C165948_-_USB_C_Receptacle_USB2.0_SMD
J1
1
SM02B-SRSS-TB(LF)(SN)
J2
1
SM02B-SRSS-TB(LF)(SN)
J3
1
Conn_ARM_JTAG_SWD_10
J4
1
SW_SPDT
BATT1
1
SW_Push
RESET1
1
CAP_STP
SW1
1
ESC
SW2
1
Tab
SW3
1
CAP
SW4
1
L_SHFT
SW5
1
L_CTRL_1.25U
SW6
1
L_CTRL_1.5U
SW7
1
1
SW8
Show 83 more
QtyPartRefs
1
Q
SW9
1
A
SW10
1
WIN_1.25U
SW11
1
2
SW12
1
W
SW13
1
S
SW14
1
Z
SW15
1
L_ALT_1.25U
SW16
1
L_ALT_1.5U
SW17
1
3
SW18
1
E
SW19
1
D
SW20
1
X
SW21
1
4
SW22
1
R
SW23
1
F
SW24
1
C
SW25
1
5
SW26
1
T
SW27
1
G
SW28
1
V
SW29
1
SPC_6.25U
SW30
1
SPC_7U
SW31
1
6
SW32
1
Y
SW33
1
H
SW34
1
B
SW35
1
7
SW36
1
U
SW37
1
J
SW38
1
N
SW39
1
8
SW40
1
I
SW41
1
K
SW42
1
M
SW43
1
R_ALT_1U
SW44
1
R_ALT_1.5U
SW45
1
9
SW46
1
O
SW47
1
L
SW48
1
,
SW49
1
R_WIN_1U
SW50
1
R_CTRL_1.5U
SW51
1
0
SW52
1
P
SW53
1
;
SW54
1
.
SW55
1
R_CTRL_1U
SW56
1
-
SW57
1
[
SW58
1
'
SW59
1
/
SW60
1
=
SW61
1
]
SW62
1
R_SHFT_1.75U
SW63
1
LEFT
SW64
1
BCKSP
SW66
1
\
SW67
1
ENT
SW68
1
UP
SW69
1
DOWN
SW70
1
ENT_ISO
SW71
1
Tilde
SW72
1
Del
SW73
1
PG_UP
SW74
1
PG_DWN
SW75
1
RIGHT
SW76
1
ISO_SPARE
SW77
2
LED
D1, D3
1
1N5819
D2
69
D
D4, D5, D6, D7, D8, D9, D10, D11 +61
2
10uF
C1, C3
1
4.7nF
C2
2
1uF
C4, C5
2
15pF
C6, C7
1
820k
R1
1
2M
R2
2
5.1k
R3, R4
2
1k
R5, R6
1
100k
R7
1
10k
R8
2
27R
R9, R10
1
1M
R11

SF65 design files

The KiCad project lives in the ericrlau/SF65 repository on GitHub; these links point at the commit this page was built from.

SF65: common questions

What microcontroller does the SF65 use?

The SF65 is built around the MDBT50Q-1MV2, from the Nordic nRF family.

How big is the SF65 PCB?

The SF65 measures 304.8 × 122.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SF65?

178 components, from 103 distinct parts. The full bill of materials is listed on this page.

Where can I download the SF65 design files?

From the ericrlau/SF65 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SF65 design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which ericrlau chose for the repository.

Can I test firmware for the SF65 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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