HardLabs

Ethernetcnc

pekkaroi·ethernetcnc·hardware/ethernetCNC_ver2/ethernetCNC_ver2.kicad_pcb

Ethernetcnc PCB layout, top view — open source STM32 board by pekkaroi

About the Ethernetcnc PCB

Ethernetcnc is an open source STM32 PCB design by pekkaroi, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 73 × 100 mm, with 94 components from 27 distinct parts.

Its main chip is the STM32F407VG, from the STM32 family. Other key parts include the NCP1117ST50T3G, LM2734 and DP83848. By type, the board carries 36 capacitors, 17 resistors, 14 connectors, 5 diodes, 4 ICs and 2 crystals.

From the project

This is my project for controlling CNC machine via ethernet port using LinuxCNC. It was originally shortly instroduced at http://pekka.eu/cnc. After receiving questions about it every now and then, I decided to publish it.

This is my project for controlling CNC machine via ethernet port using LinuxCNC. It was originally shortly instroduced at http://pekka.eu/cnc. After receiving questions about it every now and then, I decided to publish it.

There is very little to no documentation about the project right now - hopefully that will change some day. There is the firmware for STM32F407, the kicad PCB and a LinuxCNC driver available.

Main components on the Ethernetcnc

NCP1117ST50T3GLM2734STM32F407VGDP83848

Ethernetcnc bill of materials (BOM)

94 components, 27 distinct parts.

QtyPartRefs
1
NCP1117ST50T3G
U1
1
LM2734
U2
1
STM32F407VG
U3
1
DP83848
U4
1
OSCILLATOR-VDD-4
X1
1
Crystal_Small
Y1
1
HR911105_RJ45
J1
5
CONN_01X03
P1, P5, P6, P7, P8
1
CONN_01X04
P3
1
CONN_02X02
P4
5
CONN_01X10
P9, P51, P52, P53, P54
1
CONN_01X02
P10
5
SN74LVC8T245
DD1, DD5, DD12, DD13, DD14
10
R_PACK4
RP9, RP10, RP11, RP12, RP13, RP14, RP21, RP22 +2
3
Led_Small
D1, D2, D5
1
D_Schottky_Small
D3
1
D
D4
1
L_Small
L1
2
CP
C1, C26
27
100n
C2, C3, C6, C7, C8, C9, C10, C17 +19
Show 7 more
QtyPartRefs
3
10u
C4, C5, C30
2
22p
C15, C16
2
2.2u
C23, C24
10
R
R1, R2, R3, R4, R5, R8, R9, R15 +2
2
2k2
R6, R7
1
4.87k 1%
R10
4
50
R11, R12, R13, R14

Ethernetcnc design files

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

Ethernetcnc: common questions

What microcontroller does the Ethernetcnc use?

The Ethernetcnc is built around the STM32F407VG, from the STM32 family.

How big is the Ethernetcnc PCB?

The Ethernetcnc measures 73 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ethernetcnc?

94 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Ethernetcnc design files?

From the pekkaroi/ethernetcnc repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Ethernetcnc design in my own project?

Yes, under the terms of its GPL-2.0 license, which pekkaroi chose for the repository.

Can I test firmware for the Ethernetcnc 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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