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Network and Switch

AkshathRaghav·boilernet·kicad_projects/network_and_switch_mainboard/Network_and_Switch.kicad_pcb

Network and Switch PCB layout, top view — open source ESP32 board by AkshathRaghav
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About the Network and Switch PCB

Network and Switch is an open source ESP32 PCB design by AkshathRaghav, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 111 × 171 mm, with 108 components from 26 distinct parts.

Its main chip is the ESP32-WROOM-E, from the ESP32 family. Other key parts include the AMS1117-3.3, PESD5V0L2BT and CP2102N-Axx-xQFN28. By type, the board carries 31 capacitors, 26 resistors, 19 switches, 10 ICs, 8 connectors and 8 diodes.

From the project

Code release for BoilerNet, demo'd at SPARK S'25 as a Purdue Senior Design Capstone. Associated PCB Design and 3D Prints within.

This project aimed to develop a Network Attached Storage utilizing ESP32 MCUs. The aptly-named BoilerNet aims to enable In-Network-compute alongside swappable disks and compute workloads, neatly brought together by a cloud-hosted Dashboard interface. There are a few core ideas that form the foundation for this ”cluster” – Low Power Usage, Plug-and-Play Workloads, High Scalability.

Network and Switch, from the project README
From the project README

Main components on the Network and Switch

AMS1117-3.3ESP32-WROOM-EPESD5V0L2BTCP2102N-Axx-xQFN28

Network and Switch bill of materials (BOM)

108 components, 26 distinct parts.

QtyPartRefs
3
AMS1117-3.3
U1, U2, U6
1
ESP32-WROOM-E
U3
3
PESD5V0L2BT
U4, U9, U14
3
CP2102N-Axx-xQFN28
U5, U10, U15
6
SS8050
Q1, Q2, Q3, Q4, Q5, Q6
3
USB_B_Micro
J1, J2, J3
1
Conn_02x07_Odd_Even
J4
1
Barrel_Jack
J5
1
S1_Micro_SD_Card
J6
1
N_Micro_SD_Card
J7
1
S0_Micro_SD_Card
J8
2
ESP32-WROVER-E
S0, S1
8
Conn_02x05_Odd_Even
S0_Comp_0, S0_Comp_1, S0_Comp_2, S0_Comp_3, S1_Comp_0, S1_Comp_1, S1_Comp_2, S1_Comp_3
9
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW9 +1
1
RED LED
D1
4
1N5819
D2, D3, D4, D6
3
Blue LED
D7, D8, D10
18
0.1uF
C1, C5, C8, C10, C12, C14, C15, C17 +10
4
10uF
C2, C9, C18, C27
9
22uF
C7, C11, C13, C16, C20, C22, C25, C31 +1
Show 6 more
QtyPartRefs
4
360
R2, R18, R26, R28
12
10k
R3, R4, R8, R9, R11, R12, R16, R17 +4
3
22.1k
R5, R13, R21
3
47.5k
R6, R14, R22
3
2k
R7, R15, R23
1
4.7k
R25

Network and Switch design files

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

Network and Switch: common questions

What microcontroller does the Network and Switch use?

The Network and Switch is built around the ESP32-WROOM-E, from the ESP32 family.

How big is the Network and Switch PCB?

The Network and Switch measures 111 × 171 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Network and Switch?

108 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Network and Switch design files?

From the AkshathRaghav/boilernet repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Network and Switch design in my own project?

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

Can I test firmware for the Network and Switch 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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