HardLabs

AratMicro

vorlaxen-labs·AratMicro·hardware/pcb/AratMicro.kicad_pcb

AratMicro PCB layout, top view — open source STM32 board by vorlaxen-labs

About the AratMicro PCB

AratMicro is an open source STM32 PCB design by vorlaxen-labs, published on GitHub under the MIT license. It is a 4-layer board measuring 80 × 87.6 mm, with 102 components from 47 distinct parts.

Its main chip is the STM32F411CEU6, from the STM32 family. Other key parts include the AP63203WU, DRV8833PWP, QRE1113, LSM6DS3 and PCA9554PW. By type, the board carries 35 resistors, 31 capacitors, 10 diodes, 7 ICs, 7 transistors and 5 connectors.

It belongs with the robotics & motion, power & battery and sensors designs in this gallery.

From the project

High-performance, open-source micromouse robot platform built for Robosam and MEB Robot (Ministry of National Education Robotics Competition, Turkey).

KiCad 10 main board (PCB) design for the Robosam and MEB Robot micromouse platform. Project file: pcb/AratMicro.kicadpro`

Protection: polyfuse, TVS diode, AO3401A P-channel MOSFET (power path).

Signal names are taken from schematic hierarchical labels. STM32 pin assignments will be finalized during PCB layout.

The Sensor Unit uses 4× IR receivers paired with 4× IR LEDs (one emitter per direction: front-left, front-right, left, right). LED drivers are controlled via BC817 NPN transistors.

Main components on the AratMicro

AP63203WUSTM32F411CEU6DRV8833PWPQRE1113LSM6DS3PCA9554PW

AratMicro bill of materials (BOM)

102 components, 47 distinct parts.

QtyPartRefs
1
AP63203WU
U1
1
STM32F411CEU6
U2
1
DRV8833PWP
U3
2
QRE1113
U4, U5
1
LSM6DS3
U6
1
PCA9554PW
U8
2
SI2302DS
Q1, Q2
1
AO3401A
Q3
4
TEFT4300
Q4, Q5, Q6, Q7
1
8MHz Crystal
Y3
1
32.768 kHz Crystal
Y4
1
Conn_01x05
J1
1
Conn_01x06
J2
2
Conn_01x06
J3, J4
1
2S LiPo Connector
P1
1
1812L260/16
F1
1
SW_SPDT
SW1
2
SW_Push
SW4, SW5
1
SMAJ9.0A
D1
5
LED
D3, D4, D5, D6, D7
Show 27 more
QtyPartRefs
4
SFH4545
D9, D10, D11, D12
1
3.9uH
L1
1
10uF
C2
3
22uF
C3, C7, C8
1
100uF
C4
13
100nF
C5, C9, C17, C21, C25, C26, C27, C28 +5
1
1nF
C6
2
4.7uF
C10, C11
1
1uF
C12
1
10nF
C22
1
2.2uF
C23
2
0.1uF
C24, C29
1
10uF
C32
2
22pF
C37, C38
2
15pF
C39, C40
1
39K
R3
1
8.2K
R4
1
2.2Ohm
R5
1
0Ohm
R6
5
2.2K
R7, R37, R38, R39, R40
7
10K
R8, R17, R20, R29, R31, R34, R36
5
4.7K
R9, R41, R42, R43, R44
4
1K
R11, R12, R13, R14
2
0.22Ohm
R15, R16
4
22Ohm
R21, R22, R23, R30
2
100Ohm
R26, R27
2
100Ohm
R28, R35

AratMicro design files

The KiCad project lives in the vorlaxen-labs/AratMicro repository on GitHub; these links point at the commit this page was built from.

AratMicro: common questions

What microcontroller does the AratMicro use?

The AratMicro is built around the STM32F411CEU6, from the STM32 family.

How big is the AratMicro PCB?

The AratMicro measures 80 × 87.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the AratMicro?

102 components, from 47 distinct parts. The full bill of materials is listed on this page.

Where can I download the AratMicro design files?

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

Can I use the AratMicro design in my own project?

Yes, under the terms of its MIT license, which vorlaxen-labs chose for the repository.

Can I test firmware for the AratMicro 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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