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Model f usb

BASLQC·xwhatits-capsense-controller·schem/model-f-usb.kicad_pcb

Model f usb PCB layout, top view — open source AVR/Arduino board by BASLQC
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About the Model f usb PCB

Model f usb is an open source AVR/Arduino PCB design by BASLQC, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 140 × 28.5 mm, with 38 components from 22 distinct parts.

Its main chip is the ATMEGA32U2, from the AVR/Arduino family. Other key parts include the DAC101S101, LM339A and 74AHC595. By type, the board carries 12 capacitors, 9 resistors, 6 ICs, 2 connectors, 2 switches and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

A GPLv3 Keyboard Controller created by xwhatit from Geekhack for IBM Model F and Beamspring capacitive keyboards. Archived by the BASLQC on Github.

Xwhatit at Geekhack has developed a set of USB controllers for the IBM capacitive keyboards (Model F and Beamspring). These allow keyboards that otherwise have no way to hook them up to a modern PC to be used (Beamsprings), offer an alternative to Soarer's excellent converter (standard Model Fs), and also an alternative to the other intriguing capsense project around, the DPH controller. It allows the potential to go a bit further than just a converter if you're trying to do something a bit unusual—like build your own keyboard using old Model F bits, add extra keys that the original…

Main components on the Model f usb

ATMEGA32U2DAC101S101LM339A74AHC595

Model f usb bill of materials (BOM)

38 components, 22 distinct parts.

QtyPartRefs
1
ATMEGA32U2
U1
1
DAC101S101
U2
2
LM339A
U3, U4
2
74AHC595
U5, U6
1
16MHz
X1
1
USB
P1
1
CONN_3X2
P2
1
P***
1PIN
1
CONN_30
PMF1
2
10K
RP1, RP2
2
100K
RP3, RP4
1
PROG
SW1
1
RESET
SW2
2
22pF
C1, C2
1
4.7uF
C3
8
0.1uF
C4, C6, C7, C8, C9, C10, C11, C12
1
1uF
C5
2
22
R1, R2
2
20K
R3, R6
2
4.7K
R4, R7
Show 2 more
QtyPartRefs
2
10K
R5, R9
1
1K
R8

Model f usb design files

The KiCad project lives in the BASLQC/xwhatits-capsense-controller repository on GitHub; these links point at the commit this page was built from.

Model f usb: common questions

What microcontroller does the Model f usb use?

The Model f usb is built around the ATMEGA32U2, from the AVR/Arduino family.

How big is the Model f usb PCB?

The Model f usb measures 140 × 28.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Model f usb?

38 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Model f usb design files?

From the BASLQC/xwhatits-capsense-controller repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Model f usb design in my own project?

Yes, under the terms of its GPL-3.0 license, which BASLQC chose for the repository.

Can I test firmware for the Model f usb without the hardware?

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

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