HardLabs

Middle

atelier-lyon·Epiled_slaves·Middle/Middle.kicad_pcb

Middle PCB layout, top view — open source STM32 board by atelier-lyon

About the Middle PCB

Middle is an open source STM32 PCB design by atelier-lyon, published on GitHub. It is a 2-layer board measuring 229.6 × 198.8 mm, with 127 components from 33 distinct parts.

Its main chip is the STM32G070KBT6, from the STM32 family. Other key parts include the TLVM23625RDNR, AP7361C-33E, TXB0102DCU and SN74LV4052APW. By type, the board carries 42 resistors, 32 connectors, 22 capacitors, 12 transistors, 12 diodes and 5 ICs.

Main components on the Middle

TLVM23625RDNRSTM32G070KBT6AP7361C-33ETXB0102DCUSN74LV4052APW

Middle bill of materials (BOM)

127 components, 33 distinct parts.

QtyPartRefs
1
TLVM23625RDNR
U1
1
STM32G070KBT6
U2
1
AP7361C-33E
U3
1
TXB0102DCU
U4
1
SN74LV4052APW
U5
12
NMOS
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +4
1
Crystal_GND24
Y1
6
Conn_01x03_Female
J1, J4, J7, J10, J13, J16
6
Conn_01x03_Female
J2, J5, J8, J11, J14, J17
6
Conn_01x03_Female
J3, J6, J9, J12, J15, J18
2
Conn_Ext_8
J19, J25
2
Conn_Alt_8
J20, J26
4
Conn_Ext_4
J21, J23, J27, J29
4
Conn_Alt_4
J22, J24, J28, J30
1
Conn_SWD
J31
1
SWD_TAG_Connector
J32
1
SW_Push
SW1
11
LED
D1, D2, D3, D4, D5, D6, D7, D9 +3
1
locked
D8
6
100uF
C1, C8, C11, C20, C21, C22
Show 13 more
QtyPartRefs
3
4.7uF
C2, C9, C10
4
100nF
C3, C13, C15, C19
3
22uF
C4, C5, C6
1
1uF
C7
2
DNP
C12, C16
1
47uF
C14
2
0.1uF
C17, C18
12
R
R1, R2, R9, R10, R19, R20, R28, R29 +4
1
40.2k
R3
13
0
R4, R5, R11, R12, R16, R24, R25, R26 +5
14
10k
R6, R7, R8, R13, R14, R17, R21, R23 +6
1
DNP
R15
1
TBD
R18

Middle design files

The KiCad project lives in the atelier-lyon/Epiled_slaves repository on GitHub; these links point at the commit this page was built from.

Middle: common questions

What microcontroller does the Middle use?

The Middle is built around the STM32G070KBT6, from the STM32 family.

How big is the Middle PCB?

The Middle measures 229.6 × 198.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Middle?

127 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Middle design files?

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

Can I use the Middle design in my own project?

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

Can I test firmware for the Middle 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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