HardLabs

ATAT1800

earth75·atat-1800

ATAT1800 PCB layout, top view — open source STM32 board by earth75

About the ATAT1800 PCB

ATAT1800 is an open source STM32 PCB design by earth75, published on GitHub. It is a 4-layer board measuring 395 × 122.5 mm, with 331 components from 36 distinct parts.

Its main chip is the STM32F072CBT6, from the STM32 family. Other key parts include the MCP1725-3302E_SN, PRTR5V0U2X, MPQ3326GR-AEC1-P and 74LVC1G86. By type, the board carries 153 diodes, 109 switches, 29 resistors, 16 capacitors, 11 ICs and 8 inductors.

It belongs with the keyboards designs in this gallery.

From the project

A compact keyboard layout with the numpad on the right hand side

ATAT1800, from the project README
From the project README

Main components on the ATAT1800

STM32F072CBT6MCP1725-3302E_SNPRTR5V0U2XMPQ3326GR-AEC1-P74LVC1G86

ATAT1800 bill of materials (BOM)

331 components, 36 distinct parts.

QtyPartRefs
1
STM32F072CBT6
U1
1
MCP1725-3302E_SN
U2
1
PRTR5V0U2X
U3
7
MPQ3326GR-AEC1-P
U4, U5, U6, U7, U8, U9, U10
1
74LVC1G86
U11
1
USB_C_Receptacle_USB2.0
J1
1
MX_stab
S1
2
MX_stab
S2, S4
1
MX_stab
S3
3
MX_stab
S5, S6, S7
91
MX_SW_solder
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +83
7
MX_SW_solder
SW18, SW90, SW91, SW92, SW94, SW95, SW96
2
MX_SW_solder
SW38, SW51
1
MX_SW_solder
SW57
1
SW_SPDT
SW102
4
LED
LED1, LED2, LED3, LED4
52
D_Dual_CommonCathode_AAK_Split
D1, D2, D3, D4, D5, D6, D7, D8 +44
101
LED
D101, D102, D103, D104, D105, D106, D107, D108 +93
1
1k
FB1
7
300
FB2, FB3, FB4, FB5, FB6, FB7, FB8
Show 16 more
QtyPartRefs
4
0.1uF
C1, C2, C3, C4
1
4.7uF
C5
1
10nF
C6
9
10uF
C7, C9, C10, C11, C12, C13, C14, C15 +1
1
1nF
C8
10
10k
R1, R2, R3, R4, R9, R12, R17, R20 +2
2
5.1k
R5, R6
1
39k
R7
7
56k
R8, R10, R16, R19, R22, R25, R28
1
51k
R11
3
4.7k
R13, R14, R29
1
33k
R15
1
27k
R18
1
22k
R21
1
15k
R24
1
5.6k
R27

ATAT1800 design files

The KiCad project lives in the earth75/atat-1800 repository on GitHub; these links point at the commit this page was built from.

ATAT1800: common questions

What microcontroller does the ATAT1800 use?

The ATAT1800 is built around the STM32F072CBT6, from the STM32 family.

How big is the ATAT1800 PCB?

The ATAT1800 measures 395 × 122.5 mm, has 4 copper layers and is 1.62 mm thick.

How many components are on the ATAT1800?

331 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the ATAT1800 design files?

From the earth75/atat-1800 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ATAT1800 design in my own project?

The repository has no license, so all rights stay with earth75. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ATAT1800 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.

More boards in atat-1800

Similar boards