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2 layers372.1 × 113.8 mmM0116 usb, the printed circuit board in 3D

Drop-in replacement USB PCB for the Apple M0116 powered by QMK

Size
372.1 × 113.8 mm
Copper layers
2
Thickness
1.6 mm
Parts
186
Nets
125
Pads
419
Tracks, vias
843, 4
Pours
3
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
26 May 2020
Updated
12 Nov 2021

Overview

M0116 usb is an open-source printed circuit board by str-dst, from the str-dst/m0116_usb repository on GitHub. It is a 2-layer board of 372.1 × 113.8 mm with 186 parts on 125 nets, routed with 843 tracks and 4 vias.

It is built around the ATMEGA32A-PU. Its parts include 83 diodes, 5 capacitors, 4 resistors, 3 connectors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

1

README

README.md

m0116_usb

CC BY-NC-SA 4.0kofibadge

This project is completed and will not get updated anymore.

QMK compatible drop-in replacement PCB for the Apple M0116

The PCB is built entirely with THT parts to keep a somewhat "vintage" look to it and it uses the fullsize 40-pin DIP package ATmega32A. The controller is placed in the exact same location as the one on the original PCB meaning that it can be accessed through the plate cutout under the spacebar.

drawing drawing

Partslist

CountPart
1ATmega32A 40 pin DIP (32L works too)
140 pin DIP socket (optional but highly recommended)
12x3 pin header 2.54mm (for ISP flashing)
1JST PH 2mm 4pin connector + cable
1mini usb port
1500 mA polyfuse
26mm momentary push buttons
116 MHz quarz crystal
14.7 uF electrolytic capacitor
2100 nF ceramic disk capacitor
222 pF ceramic disk capacitor
110 kΩ resistor
268 Ω resistor
11.5 kΩ resistor
23.6 V zener diode (DO-35 BZX55C3V6)
81universal switching diode (DO-35 1N4148)
Some pictures of the first finished PCB

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

CC BY-NC-SA 4.0

Parts

186
QtyValueFootprintReferences
81D_SmallDiode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +65
81MX-NoLEDAlps_Only:ALPS-1UMX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +65
20.1uCapacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mmC2, C3
222pCapacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC4, C5
23.6VDiode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2
268RResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR3, R4
11.5kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR2
110kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1
14.7uCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC1
1500mAFuse:Fuse_Littelfuse_395SeriesF1
1ATmega32A-PUPackage_DIP:DIP-40_W15.24mm_SocketU1
1AVR-ISP-6Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_HorizontalJ1
1BootButton_Switch_THT:SW_PUSH_6mmBoot
1Conn_01x04Connector_JST:JST_PH_S4B-PH-K_1x04_P2.00mm_HorizontalJ3
1Conn_01x04Connector_PinHeader_2.00mm:PinHeader_1x04_P2.00mm_VerticalJ2
1CrystalCrystal:Crystal_HC49-4H_VerticalXTAL1
1LOGOcustom_parts:oshwG***
1LOGOcustom_parts:pear_x_elmoG***
1LOGOcustom_parts:m0116_qrG***
1LOGOcustom_parts:qmkG***
1ResetButton_Switch_THT:SW_PUSH_6mmReset
1USB_B_Minirandom-keyboard-parts:Molex-0548190519USB1

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Questions

How big is the M0116 usb PCB?

It measures 372.1 × 113.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the M0116 usb use?

186 parts, built around the ATMEGA32A-PU. 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 M0116 usb KiCad files?

From the str-dst/m0116_usb repository on GitHub, at the commit this page was made from: the board is m0116_usb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the M0116 usb design in my own project?

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