HardLabs

Mainboard

apparentlymart·miniclock·mainboard/mainboard.kicad_pcb

Mainboard PCB layout, top view — open source NXP board by apparentlymart

About the Mainboard PCB

Mainboard is an open source NXP PCB design by apparentlymart, published on GitHub. It is a 2-layer board measuring 103 × 41 mm, with 25 components from 9 distinct parts.

Its main chip is the LPC812, from the NXP family. Other key parts include the DS3231M. By type, the board carries 9 resistors, 6 switches, 4 capacitors, 3 connectors and 2 ICs.

From the project

A small DIY Alarm Clock

Main components on the Mainboard

LPC812DS3231M

Mainboard bill of materials (BOM)

25 components, 9 distinct parts.

QtyPartRefs
1
LPC812
U1
1
DS3231M
U2
1
CONN_01X06
P1
2
CONN_01X08
P2, P3
6
SW_PUSH
SW1, SW2, SW3, SW4, SW5, SW6
1
LD1117
VR1
3
C
C1, C2, C4
1
CP
C3
9
R
R1, R2, R3, R4, R5, R6, R7, R8 +1

Mainboard design files

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

Mainboard: common questions

What microcontroller does the Mainboard use?

The Mainboard is built around the LPC812, from the NXP family.

How big is the Mainboard PCB?

The Mainboard measures 103 × 41 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mainboard?

25 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mainboard design files?

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

Can I use the Mainboard design in my own project?

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

Can I test firmware for the Mainboard without the hardware?

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

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