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Esp32node

MadsRudolph·personal-projects·esp32-node/esp32node/esp32node.kicad_pcb

Esp32node PCB layout, top view — open source ESP32 board by MadsRudolph

About the Esp32node PCB

Esp32node is an open source ESP32 PCB design by MadsRudolph, published on GitHub. It is a 2-layer board measuring 63 × 60.8 mm, with 32 components from 24 distinct parts.

Its main chip is the TL074, from the ESP32 family. Other key parts include the LM7812 and CH340C. By type, the board carries 11 resistors, 7 capacitors, 5 connectors, 3 ICs, 2 transistors and 2 switches.

It belongs with the iot & wireless and audio designs in this gallery.

From the project

A collection of hardware projects focusing on audio, electronics, and 3D printing. Built and documented using Obsidian.

A collection of hardware projects focusing on audio, electronics, and 3D printing. Built and documented using Obsidian.

Desktop app for cataloging THT electronic components with a built-in DTU shop browser. Track your parts, visualize resistor color bands, browse 1,400+ shop items, and see what you already own.

Key Features: - Dashboard with donut chart and stats - Inventory with search, category filter, and visual resistor color bands - DTU Shop Browser — browse/search/filter shop components, ownership cross-referencing - AI Export — markdown summary for LLM-assisted project planning -…

Main components on the Esp32node

TL074LM7812CH340C

Esp32node bill of materials (BOM)

32 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TL074
ESP32-WROOM-32
U1
1
LM7812
AMS1117-3.3
U2
1
CH340C
U3
2
S8050
Q1, Q2
1
USB-C
J1
1
GPIO L
J2
1
GPIO R
J3
1
I2C
J4
1
1-Wire
J5
1
RESET
SW1
1
BOOT
SW2
1
LED red (power)
D1
1
LED blue
D2
3
10u
C1, C2, C4
3
100n
C3, C5, C7
1
1u
C6
1
5.1k
R1
1
8K25
5.1k
R2
2
10K
10k
R3, R4
2
100R
10k
R5, R6
Show 4 more
QtyPartRefs
1
10R
1k
R7
1
10K
1k
R8
1
10K
4.7k
R9
2
4K7
4.7k
R10, R11

Esp32node design files

The KiCad project lives in the MadsRudolph/personal-projects repository on GitHub; these links point at the commit this page was built from.

Esp32node: common questions

What microcontroller does the Esp32node use?

The Esp32node is built around the TL074, from the ESP32 family.

How big is the Esp32node PCB?

The Esp32node measures 63 × 60.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Esp32node?

32 components, from 24 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 Esp32node design files?

From the MadsRudolph/personal-projects 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 Esp32node design in my own project?

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

Can I test firmware for the Esp32node 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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