HardLabs

SP56

ericrlau·SP56·PCB/SP56/SP56.kicad_pcb

SP56 PCB layout, top view — open source board by ericrlau
Simulate this board

About the SP56 PCB

SP56 is an open source PCB design by ericrlau, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 272.1 × 98.3 mm, with 176 components from 30 distinct parts.

Other key parts include the LN2054Y42AMR, E73-2G4M08S1C and AP2112K-3.3. By type, the board carries 62 diodes, 56 switches, 18 resistors, 16 capacitors, 8 connectors and 6 ICs.

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

From the project

Bluetooth low engery keyboard. Layout based on Sofle keyboard with some modifications. NRF52840 powered. Designed around Kaihl Choc switches and spacing.

- 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

SP56, from the project README
From the project README

Main components on the SP56

LN2054Y42AMRE73-2G4M08S1CAP2112K-3.3

SP56 bill of materials (BOM)

176 components, 30 distinct parts.

QtyPartRefs
2
LN2054Y42AMR
U1, U101
2
E73-2G4M08S1C
U2, U102
2
AP2112K-3.3
U3, U103
2
A03407
Q1, Q102
2
32.768kHz
Y1, Y101
2
USB_C_Receptacle_USB2.0
J1, J101
2
Conn_01x01_Male
J2, J3
2
SM02B-SRSS-TB(LF)(SN)
J9, J106
2
Conn_01x01_Female
J103, J104
2
SW_SPDT
BATT1, BATT101
2
SW_Push
RESET1, RESET101
52
SW_PUSH
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +44
2
Rotary_Encoder_Switch
SW25, SW125
2
SW_PUSH
SW26, SW126
2
Conn_01x04_Female
SWD/C1, SWD/C101
56
D
D1, D2, D3, D4, D5, D6, D7, D8 +48
4
LED
D31, D32, D131, D132
2
1N5819
D33, D133
4
22pF
C1, C2, C103, C104
4
4.7uF
C3, C4, C101, C102
Show 10 more
QtyPartRefs
2
10uF
C5, C105
4
.1uF
C6, C7, C106, C107
2
4.7nF
C8, C9
4
1k
R1, R6, R101, R106
2
10k
R2, R102
2
1M
R3, R10
2
820k
R4, R104
2
2M
R5, R105
4
5.1k
R7, R8, R107, R108
2
100k
R9, R103

SP56 design files

The KiCad project lives in the ericrlau/SP56 repository on GitHub; these links point at the commit this page was built from.

SP56: common questions

How big is the SP56 PCB?

The SP56 measures 272.1 × 98.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SP56?

176 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the SP56 design files?

From the ericrlau/SP56 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SP56 design in my own project?

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

More boards in SP56

Similar boards