HardLabs

Cyclometer v1

Vaaarad07·PCB_Designs·Cyclometer/Cyclometer_v1.kicad_pcb

Cyclometer v1 PCB layout, top view — open source STM32 board by Vaaarad07

About the Cyclometer v1 PCB

Cyclometer v1 is an open source STM32 PCB design by Vaaarad07, published on GitHub under the MIT license. It is a 2-layer board measuring 58.8 × 94 mm, with 81 components from 35 distinct parts.

Its main chip is the STM32F446RCTx, from the STM32 family. Other key parts include the MPU-6050, AT24CS32-SSHM, TP4056 and LDK130-ADJ_SOT23_SOT353. By type, the board carries 25 resistors, 24 capacitors, 11 diodes, 9 connectors, 5 ICs and 2 switches.

It belongs with the power & battery and usb & debug tools designs in this gallery.

From the project

A repo with STM32 based PCB designs

Cyclometer v1, from the project README
From the project README

Main components on the Cyclometer v1

STM32F446RCTxMPU-6050AT24CS32-SSHMTP4056LDK130-ADJ_SOT23_SOT353

Cyclometer v1 bill of materials (BOM)

81 components, 35 distinct parts.

QtyPartRefs
1
STM32F446RCTx
U1
1
MPU-6050
U2
1
AT24CS32-SSHM
U3
1
TP4056
U4
1
LDK130-ADJ_SOT23_SOT353
U12
1
Crystal
Y1
1
Conn_01x03_Male
J1
1
GPS
J2
1
Conn_01x06_Pin
J3
1
LCD
J4
1
LCD
J5
1
—
J6
1
NRF
J7
1
USB_C_Receptacle
J8
1
Conn_01x06_Pin
J9
1
SW_Push
RST1
2
R_Small_US
Ra1, Ra2
1
1K2
Rp2
2
SW_Push
SW1, SW2
10
LED
D1, D4, D10, D11, D12, D13, D14, D15 +2
Show 15 more
QtyPartRefs
1
LED
D2
7
100nF
C1, C2, C3, C4, C5, C6, C8
1
1uF
C7
1
4.7uF
C9
2
TBC
C10, C11
1
10nF
C14
4
0.1uF
C15, C16, C19, C24
1
2.2nF
C17
6
10uF
C18, C21, C22, C23, C32, C33
1
100nF
C20
15
10K
R1, R3, R4, R5, R7, R8, R12, R19 +7
1
TBC
R2
1
R_Small_US
R6
4
4.7k
R13, R14, R15, R16
4
5.1k
R26, R27, R28, R29

Cyclometer v1 design files

The KiCad project lives in the Vaaarad07/PCB_Designs repository on GitHub; these links point at the commit this page was built from.

Cyclometer v1: common questions

What microcontroller does the Cyclometer v1 use?

The Cyclometer v1 is built around the STM32F446RCTx, from the STM32 family.

How big is the Cyclometer v1 PCB?

The Cyclometer v1 measures 58.8 × 94 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cyclometer v1?

81 components, from 35 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cyclometer v1 design files?

From the Vaaarad07/PCB_Designs repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cyclometer v1 design in my own project?

Yes, under the terms of its MIT license, which Vaaarad07 chose for the repository.

Can I test firmware for the Cyclometer v1 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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