2 layers246.7 × 94.2 mm FriedrichPCB, the printed circuit board in 3D

FriedrichPCB

50% 3D printed keyboard designed to be printable on regular sized 3d printers.

Size: 246.7 × 94.2 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 122
Nets: 92
Pads: 466
Tracks, vias: 702, 37
Pours: 2
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 24 Jan 2021
Updated: 23 Aug 2021

Overview

FriedrichPCB is an open-source printed circuit board by Marbelymarble, from the Marbelymarble/Friedrich repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 246.7 × 94.2 mm with 122 parts on 92 nets, routed with 702 tracks and 37 vias.

It is built around the ATMEGA32U4-AU and SRV05-4. Its parts include 52 diodes, 8 capacitors, 4 resistors, 2 ICs and 1 crystal. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

README

PCB/README.md

Friedrich PCB

Atmega32u4 based PCB for the Friedrich50 keyboard

LCSC BOM

JLC CPL

JST connector for USB

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Parts

122

Qty	Value	Footprint	References
52	D_Small	Diode_SMD:D_SOD-123	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +36
43	MX-NoLED	MX_Only:MXOnly-1U-NoLED	MX1, MX2, MX10, MX11, MX12, MX13, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23, MX24 +27
4	0.1uF	Capacitor_SMD:C_0805_2012Metric	C2, C3, C4, C5
2	10k	Resistor_SMD:R_0805_2012Metric	R3, R5
2	22	Resistor_SMD:R_0805_2012Metric	R1, R2
2	22pF	Capacitor_SMD:C_0805_2012Metric	C8, C9
2	MX-NoLED	MX_Only:MXOnly-1.5U-NoLED	MX14, MX25
2	MX-NoLED	MX_Only:MXOnly-1.75U-NoLED	MX27, MX51
2	MX-NoLED	MX_Only:MXOnly-1.25U-NoLED	MX54, MX62
1	10uF	Capacitor_SMD:C_0805_2012Metric	C1
1	1uF	Capacitor_SMD:C_0805_2012Metric	C7
1	ATmega32U4-AU	Package_QFP:TQFP-44_10x10mm_P0.8mm	U1
1	Conn_01x04	Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal	USB1
1	Crystal_GND24_Small	Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm	X1
1	MX-NoLED	MX_Only:MXOnly-6.25U-ReversedStabilizers-NoLED	MX58
1	MX-NoLED	MX_Only:MXOnly-2.25U-ReversedStabilizers-NoLED	MX40
1	MX-NoLED	MX_Only:MXOnly-2.25U-NoLED	MX38
1	Polyfuse_Small	Fuse:Fuse_1206_3216Metric	F1
1	SRV05-4	Package_TO_SOT_SMD:SOT-23-6	U2
1	SW_Push	Button_Switch_SMD:SW_SPST_TL3342	RESET

Questions

How big is the FriedrichPCB PCB?

It measures 246.7 × 94.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the FriedrichPCB use?

122 parts, built around the ATMEGA32U4-AU and SRV05-4. 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 FriedrichPCB KiCad files?

From the Marbelymarble/Friedrich repository on GitHub, at the commit this page was made from: the board is PCB/FriedrichPCB.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the FriedrichPCB design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/marbelymarble-friedrich" title="FriedrichPCB 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/marbelymarble-friedrich.jpg" alt="FriedrichPCB" width="1200" height="900">

A picture that opens the board, for a README

[![FriedrichPCB](https://pcbkit.io/embed/boards/marbelymarble-friedrich.jpg?size=s)](https://pcbkit.io/boards/marbelymarble-friedrich)

Source

Repository: Marbelymarble/Friedrich
Board file: PCB/FriedrichPCB.kicad_pcb
Commit: 253eab9
Licence: GPL-3.0

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