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Isometria-75-pcb iso

BenjaminJAnderson·Orthodox·Hardware/PCB/references/isometria-75-master/isometria-75-pcb-iso/isometria-75-pcb-iso.kicad_pcb

Isometria-75-pcb iso layout, top view — open source STM32 board by BenjaminJAnderson

About the Isometria-75-pcb iso

Isometria-75-pcb iso is an open source STM32 PCB design by BenjaminJAnderson, published on GitHub. It is a 2-layer board measuring 308.3 × 123 mm, with 320 components from 28 distinct parts.

Its main chip is the STM32F072CBTx, from the STM32 family. Other key parts include the XC6206P332MR and 74LVC1G125. By type, the board carries 100 diodes, 91 resistors, 37 capacitors, 3 ICs, 3 connectors and 3 switches.

From the project

The first prototype is sitting on my desk and works perfectly - clearance for weights and battery is currently wrong, so the intended battery will not fit in the case.

The first prototype is sitting on my desk and works perfectly - clearance for weights and battery is currently wrong, so the intended battery will not fit in the case.

The name isometria75 has it's origin in the greek noun ἰσομετρία (in latin letters: isometria), meaning "equality of measure" [[1]](http://perseus.uchicago.edu/cgi-bin/philologic/getobject.pl?c.35:6:59.LSJ). This word ended up being included in various languages, among them english (isometric), with the same meaning. I chose it for two reasons - because this keyboard is only available in an ISO layout (sorry ANSI users - for…

Isometria-75-pcb iso, from the project README
From the project README

Main components on the Isometria-75-pcb iso

XC6206P332MRSTM32F072CBTx74LVC1G125

Isometria-75-pcb iso bill of materials (BOM)

320 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XC6206P332MR
U1
1
STM32F072CBTx
U2
1
74LVC1G125
U3
1
AO3400A
Q1
1
USB
J1
1
SPI
J2
1
Conn_01x01_Male
J3
70
MX-LED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +62
1
MX-LED
MX28
3
MX-LED
MX30, MX71, MX78
1
MX-LED
MX44
1
MX-LED
MX57
5
MX-LED
MX59, MX74, MX75, MX76, MX79
1
MX-LED
MX77
1
RST
SW1
1
BOOT
SW2
1
Rotary_Encoder_Switch
SW3
83
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +75
17
SK6812MINI
D84, D85, D86, D87, D88, D89, D90, D91 +9
2
100uF
C1, C2
Show 8 more
QtyPartRefs
1
10uF
C3
2
1uF
C4, C6
3
4.7uF
C5, C11, C12
29
100nF
C7, C8, C9, C10, C13, C14, C15, C16 +21
1
100R
R1
4
10k
R2, R3, R8, R23
4
47k
R4, R5, R6, R7
82
680R
R9, R10, R11, R12, R13, R14, R15, R16 +74

Isometria-75-pcb iso design files

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

Isometria-75-pcb iso: common questions

What microcontroller does the Isometria-75-pcb iso use?

The Isometria-75-pcb iso is built around the STM32F072CBTx, from the STM32 family.

How big is the Isometria-75-pcb iso?

The Isometria-75-pcb iso measures 308.3 × 123 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Isometria-75-pcb iso?

320 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Isometria-75-pcb iso design files?

From the BenjaminJAnderson/Orthodox repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Isometria-75-pcb iso design in my own project?

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

Can I test firmware for the Isometria-75-pcb iso without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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