HardLabs

Nul

Choccy-vr·nul·PCB/nul.kicad_pcb

Nul PCB layout, top view — open source ESP32 board by Choccy-vr
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About the Nul PCB

Nul is an open source ESP32 PCB design by Choccy-vr, published on GitHub. It is a 4-layer board measuring 11 × 43.2 mm, with 30 components from 18 distinct parts.

Its main chip is the ESP32-C3FH4, from the ESP32 family. Other key parts include the AMS1117-3.3, SN74AHCT1G125DBVR, XRCGB40M000F1S1DR0 and SRV05-4. By type, the board carries 13 capacitors, 8 resistors, 5 ICs, 1 connector, 1 jumper and 1 inductor.

From the project

A WLED controller that blends into the background

Nul, from the project README
From the project README

Main components on the Nul

ESP32-C3FH4AMS1117-3.3SN74AHCT1G125DBVRXRCGB40M000F1S1DR0SRV05-4

Nul bill of materials (BOM)

30 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3FH4
U1
1
AMS1117-3.3
U2
1
SN74AHCT1G125DBVR
U3
1
XRCGB40M000F1S1DR0
muRata(村田)
U4
1
SRV05-4
U5
1
LED Socket
J2
1
U.FL-R-SMT-1(80)
U.FL-R-SMT-1
HRS(广濑)
JP2
1
918-418K2023C40002
FUC-24F11-SNLB1
精拓金
USBC1
1
C27122
L
L1
5
C1525
0.1uF ceramic
C2, C3, C4, C5, C13
1
1UF
1uF
C6
2
15PF
15pF
C7, C8
2
1.5PF
1.5pF
C9, C10
2
10UF
10uf
C11, C12
1
220UF
220uf
C14
3
10K
10k
R1, R2, R3
3
33OHM
33Ohm
R4, R8, R9
2
5.1K
5.1k
R5, R6

Nul design files

The KiCad project lives in the Choccy-vr/nul repository on GitHub; these links point at the commit this page was built from.

Nul: common questions

What microcontroller does the Nul use?

The Nul is built around the ESP32-C3FH4, from the ESP32 family.

How big is the Nul PCB?

The Nul measures 11 × 43.2 mm, has 4 copper layers and is 1.600198 mm thick.

How many components are on the Nul?

30 components, from 18 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 Nul design files?

From the Choccy-vr/nul repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Nul design in my own project?

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

Can I test firmware for the Nul 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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