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Atx-24pin rev3-candidate

nathanfraske·CEC-Platform·beta/atx-24pin-rev3/candidate/atx-24pin-rev3-candidate.kicad_pcb

Atx-24pin rev3-candidate PCB layout, top view — open source ESP32 board by nathanfraske
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About the Atx-24pin rev3-candidate PCB

Atx-24pin rev3-candidate is an open source ESP32 PCB design by nathanfraske, published on GitHub under the Apache-2.0 license. It is a 6-layer board measuring 86 × 95 mm, with 126 components from 55 distinct parts.

Its main chip is the ESP32-C6-MINI-1-N4, from the ESP32 family. Other key parts include the TJA1051T/3, LP5907MFX-3.3, TPS2121RUXR, 74LVC1G17 and INA238AIDGSR. By type, the board carries 44 capacitors, 28 resistors, 19 ICs, 6 connectors, 5 diodes and 2 switches.

From the project

ONE board file, kept current by the wave (owner directive 2026-07-25: "the current best should be placed into a candidate folder per board and kept current with only one board ideally so we have a reference").

ONE board file, kept current by the wave (owner directive 2026-07-25: "the current best should be placed into a candidate folder per board and kept current with only one board ideally so we have a reference").

-candidate.kicadpcb (+ its .kicadpro / .kicaddru sidecars) is a COPY of the best board the wave has ever published for this module, with candidate.json recording where it came from and how it graded. Open it to see the real current state of the layout without digging through build/fresh-wave-/.

Main components on the Atx-24pin rev3-candidate

ESP32-C6-MINI-1-N4TJA1051T/3LP5907MFX-3.3TPS2121RUXR74LVC1G17INA238AIDGSRINA238INA181A2IDBVRTLV7011DBVR

Atx-24pin rev3-candidate bill of materials (BOM)

126 components, 55 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C6-MINI-1-N4
Espressif Systems
U1
1
TJA1051T/3
NXP
U2
1
LP5907MFX-3.3
TLV75533PDRVR
Texas Instruments
U3
1
TPS2121RUXR
74LVC1G17
Texas Instruments
U4
2
TPS2121RUXR
U5, U6
1
74LVC1G17
U8
2
INA238AIDGSR
INA238
Texas Instruments
U10, U11
2
INA238
U12, U13
4
INA181A2IDBVR
U63V31, U65V1, U65VSB1, U612V1
4
TLV7011DBVR
U73V31, U75V1, U75VSB1, U712V1
1
AO3400A
Q1
1
TO-HUB-PWR
J2
1
ATX-24 PSU
J3
1
U262-161N-4BVC11
USB-C 2.0
XKB Connection
J5
1
TO-HUB-STACK-COMMS
J6C
1
TO-HUB-STACK-ID
J6D
1
TO-HUB-STACK-PWR
J6P
1
USBLC6-2SC6
D_USB1
1
1206L075/16WR
750mA/16V PTC
Littelfuse
F1
1
SSQ-104-03-G-S
J_SIG1
Show 35 more
QtyPartRefs
2
CSS2H-2512R-L500F
2mΩ
Bourns
RS1, RS2
1
2mΩ
RS3
1
R025
RS4
2
0Ω
R_BYP_H1, R_BYP_L1
1
TS-1088-AR02016
BOOT
XKB
SW1
1
TS-1088-AR02016
RESET
XKB
SW2
10
TE 63969-1
TB1, TB2, TB3, TB4, TB5, TB6, TB7, TB8 +2
1
PESD5V0S1BA
Nexperia
D1
1
USBLC6-2SC6
PESD5V0S1BA
UMW
D3
2
PESD5V0S1BA
D4, D7
1
BAT54S
D5
1
MPZ2012S601AT000
600R@100MHz FB (MPZ2012S601AT000)
TDK
FB1
1
0805W8F0000T5E
0R (FB position, populate on EMC evidence)
UNI-ROYAL
FB2
2
CL10A105KB8NNNC
1uF
Samsung
C1, C2
7
CL05B104KO5NNNC
100nF
Samsung
C3, C4, C5, C8, C10, C11, C20
3
CL21A106KAYNNNE
10uF
Samsung
C6, C7, C9
19
100nF
C12, C13, C18, C22, C52, C54, C60, C61 +11
5
1uF
C14, C15, C16, C17, C24
4
10uF
C19, C23, C53, C55
1
CL05B104KO5NNNC
10uF
Samsung
C21
1
22uF
C25
1
2u2
C50
1
2.2uF
C51
3
0402WGF2201TCE
2.2kΩ
UNI-ROYAL
R1, R3, R4
2
0402WGF1002TCE
10kΩ
UNI-ROYAL
R2, R10
1
0402WGF1003TCE
100kΩ
UNI-ROYAL
R7
2
0402WGF5101TCE
5.1kΩ
UNI-ROYAL
R8, R9
1
20kΩ
R50
6
10kΩ
R51, R56, R60, R61, R69, R76
5
100kΩ
R52, R54, R57, R73, R75
2
33kΩ
R53, R58
2
43.2kΩ
R55, R59
2
1kΩ
R70, R71
1
100Ω
R72
1
15kΩ
R74

Atx-24pin rev3-candidate design files

The KiCad project lives in the nathanfraske/CEC-Platform repository on GitHub; these links point at the commit this page was built from.

Atx-24pin rev3-candidate: common questions

What microcontroller does the Atx-24pin rev3-candidate use?

The Atx-24pin rev3-candidate is built around the ESP32-C6-MINI-1-N4, from the ESP32 family.

How big is the Atx-24pin rev3-candidate PCB?

The Atx-24pin rev3-candidate measures 86 × 95 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Atx-24pin rev3-candidate?

126 components, from 55 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 Atx-24pin rev3-candidate design files?

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

Can I use the Atx-24pin rev3-candidate design in my own project?

Yes, under the terms of its Apache-2.0 license, which nathanfraske chose for the repository.

Can I test firmware for the Atx-24pin rev3-candidate without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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