HardLabs

Quadrant board

chronopoulos·quadrant-board·kicad/quadrant.kicad_pcb

Quadrant board layout, top view — open source STM32 board by chronopoulos

About the Quadrant board

Quadrant board is an open source STM32 PCB design by chronopoulos, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 53 × 73.5 mm, with 45 components from 16 distinct parts.

Its main chip is the STM32F070CBT6, from the STM32 family. Other key parts include the VL6180XV0NR/1 and AP7332-2833W6-7. By type, the board carries 17 capacitors, 15 resistors, 6 ICs, 4 diodes, 2 connectors and 1 crystal.

From the project

KiCad project files for the Quadrant Board

Quadrant board, from the project README
From the project README

Main components on the Quadrant board

VL6180XV0NR/1AP7332-2833W6-7STM32F070CBT6

Quadrant board bill of materials (BOM)

45 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
VL6180XV0NR/1
VL6180X
STMicroelectronics
U1, U3, U4, U5
1
AP7332-2833W6-7
AP7332-2833
Diodes Incorporated
U2
1
STM32F070CBT6
STM32F070CBTx
STMicroelectronics
U6
1
ABL-8.000MHZ-B2
8 MHz
Abracon LLC
Y1
1
PRPC006SBAN-M71RC
Conn_01x06
Sullins Connector Solutions
J1
1
10103594-0001LF
USB_B_Micro
Amphenol FCI
J2
4
150060BS55040
LED
Wurth Electronics Inc.
D1, D2, D3, D4
3
885012207051
1uF
Wurth Electronics Inc.
C1, C4, C8
4
CL21A475KQFNNNG
4.7uF
Samsung Electro-Mechanics
C2, C5, C7, C13
4
885012207016
0.1uF
Wurth Electronics Inc.
C3, C6, C12, C14
2
C0805C180K5GACTU
18 pF
KEMET
C9, C10
4
885012207016
0.1 uF
Wurth Electronics Inc.
C15, C16, C17, C18
1
CR0805-FX-1002ELF
10k
Bourns Inc.
R1
4
RMCF0805FT10R0
10
Stackpole Electronics Inc
R2, R3, R4, R5
2
CR0805-JW-472ELF
4.7k
Bourns Inc.
R6, R7
8
RMCF0805JT47K0
47k
Stackpole Electronics Inc.
R8, R9, R10, R11, R12, R13, R14, R15

Quadrant board design files

The KiCad project lives in the chronopoulos/quadrant-board repository on GitHub; these links point at the commit this page was built from.

Quadrant board: common questions

What microcontroller does the Quadrant board use?

The Quadrant board is built around the STM32F070CBT6, from the STM32 family.

How big is the Quadrant board?

The Quadrant board measures 53 × 73.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Quadrant board?

45 components, from 16 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 Quadrant board design files?

From the chronopoulos/quadrant-board repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Quadrant board design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which chronopoulos chose for the repository.

Can I test firmware for the Quadrant board 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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