2 layers376.2 × 171.5 mm Mia, the printed circuit board in 3D

Mia

122 key keyboard PCB with usb spi uart i2c

Size: 376.2 × 171.5 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 358
Nets: 211
Pads: 1,017
Tracks, vias: 1,759, 116
Pours: 4
Routed: Yes
KiCad: KiCad 4
Created: 31 Mar 2018
Updated: 7 Apr 2018

Overview

Mia is an open-source printed circuit board by OpenKeyboards, from the OpenKeyboards/Mia repository on GitHub. It is a 2-layer board of 376.2 × 171.5 mm with 358 parts on 211 nets, routed with 1,759 tracks and 116 vias.

It is built around the PIC32MX470F512H-I/PT, INA219AID and PCF2127T/2Y. Its parts include 122 diodes, 121 switches, 41 connectors, 25 resistors and 20 capacitors. It belongs with the PIC boards of this library.

Main components

README

README.md

Mia

122 key keyboard PCB with usb spi uart i2c

Parts

358

Qty	Value	Footprint	References
121	D	myparts:D_SOD-323-NOMASK	D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +105
121	SW	myparts:SW_SOCKET_COMBINED_T	S1, S10, S11, S100, S101, S102, S103, S104, S105, S106, S107, S108, S109, S110, S111, S112 +105
14	CONN_01X01	myparts:throughholelink	P20, P21, P22, P23, P24, P25, P26, P27, P28, P29, P30, P31, P32, P33
12	0.1uF	Capacitors_SMD:C_0805	C2, C4, C6, C9, C10, C11, C12, C13, C15, C16, C17, C18
10	CONN_01X01	myparts:PCBSTAB	P1, P8, P9, P10, P11, P12, P13, P14, P15, P16
8	10k	Resistors_SMD:R_0805	R1, R11, R12, R14, R15, R17, R18, R20
7	330R	Resistors_SMD:R_0805	R13, R19, R21, R22, R23, R24, R25
4	CONN_01X01	Mounting_Holes:MountingHole_2.7mm_M2.5_Pad	P34, P35, P36, P37
4	CONN_01X01	myparts:m25MountingClearance	P38, P39, P40, P41
2	1.5A 600Ohms@100Mhz	Inductors_SMD:L_0805	L1, L2
2	100k	Resistors_SMD:R_0805	R9, R10
2	12.5pF	Capacitors_SMD:C_0805	C19, C20
2	18pF	Capacitors_SMD:C_0805	C7, C8
2	2.2uF	Capacitors_SMD:C_0805	C1, C5
2	4.7k	Resistors_SMD:R_0805	R7, R8
2	CONN_01X04	myparts:JST4x1.00mm_Angled	P6, P17
2	CONN_01X06	myparts:JST_SH_6x1_Angled	P4, P7
2	CONN_01X27	Pin_Headers:Pin_Header_Straight_1x27_Pitch1.27mm	P18, P19
2	Jumper_NO_Small	jumper:SOLDER-JUMPER_1-WAY	JP1, JP3
2	RX	LEDs:LED_0805	RX, RX
2	TX	LEDs:LED_0805	TX, TX
1	10R	Resistors_SMD:R_0805	R6
1	10uF	Capacitors_SMD:C_0805	C14
1	1M	Resistors_SMD:R_0805	R5
1	1k	Resistors_SMD:R_0805	R2
1	200k	Resistors_SMD:R_0805	R3
1	20Mhz	myparts:OSCAB7	Y1
1	3.3V	Measurement_Points:Measurement_Point_Round-TH_Small	3V3
1	32.768Mhz	myparts:ECX-327-CDX-1293	Y2
1	5V	Measurement_Points:Measurement_Point_Round-TH_Small	5V1
1	630nF 16V	Capacitors_SMD:C_0805	C3
1	BL	LEDs:LED_0805	L8
1	Battery_Cell	Battery_Holders:Keystone_3000_1x12mm-CoinCell	BT1
1	CONN_01X06	myparts:JST4x1.00mm_AngledUSB	P3
1	EMI_Filter_LL	myparts:USBChoke	FL1
1	GND	Measurement_Points:Measurement_Point_Square-TH_Small	GND1
1	INA219	Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm	U5
1	ISCP HEADER	myparts:ISCP_Header	P2
1	M24M02-DR	Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm	U3
1	MCP1727	Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm	U1
1	PIC32MX470F512H	myparts:PIC32MX470F512H	U2
1	PPS	LEDs:LED_0805	L3
1	PWR	LEDs:LED_0805	PWR1
1	R	Resistors_SMD:R_0805	R4
1	SENSE	Resistors_SMD:R_2512	R16
1	TEST	Measurement_Points:Measurement_Point_Round-TH_Small	TP1
1	TVSDiodeArray	TO_SOT_Packages_SMD:SOT-23-6_Handsoldering	D127
1	ViaPattern	myparts:spiheader	P5
1	ccncsa2	myparts:ccncsa2	G***
1	mia4	myparts:mia4	G***
1	mia_name	myparts:mia_name	G***
1	oshw2	myparts:oshw2	G***
1	pcf2127t	myparts:NXP-SO16	U4
1	portlabels	myparts:portlabels	G***

Questions

How big is the Mia PCB?

It measures 376.2 × 171.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Mia use?

358 parts, built around the PIC32MX470F512H-I/PT, INA219AID and PCF2127T/2Y. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Mia KiCad files?

From the OpenKeyboards/Mia repository on GitHub, at the commit this page was made from: the board is PCB v1.1/mia.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Mia design in my own project?

Its repository states no licence, so its author keeps all rights: ask OpenKeyboards before reusing the design.

Category and platform

PIC

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/openkeyboards-mia" title="Mia in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/openkeyboards-mia.jpg" alt="Mia" width="1200" height="900">

A picture that opens the board, for a README

[![Mia](https://pcbkit.io/embed/boards/openkeyboards-mia.jpg?size=s)](https://pcbkit.io/boards/openkeyboards-mia)

Source

Repository: OpenKeyboards/Mia
Board file: PCB v1.1/mia.kicad_pcb
Commit: 745c6ed
Licence: Not stated

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