HardLabs

TUe-CBL-Circular-Electronics

bgb-0·TUe-CBL-Circular-Electronics·src/ESP32-Modular-Board.kicad_pcb

TUe-CBL-Circular-Electronics PCB layout, top view — open source ESP32 board by bgb-0

About the TUe-CBL-Circular-Electronics PCB

TUe-CBL-Circular-Electronics is an open source ESP32 PCB design by bgb-0, published on GitHub under the CERN-OHL-P-2.0 license. It is a 4-layer board measuring 45.3 × 40.1 mm, with 54 components from 38 distinct parts.

Its main chip is the ESP32-MINI-1-N4, from the ESP32 family. Other key parts include the AMS1117-3.3, HT6873B5SPNR, MT3608 and TP4056-42-ESOP8. By type, the board carries 20 resistors, 17 capacitors, 5 ICs, 4 diodes, 3 connectors and 2 switches.

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

From the project

A simple and compact bluetooth audio PCB for the TU/e Multidiscplinary CBL track "Circular Electronics"

TUe-CBL-Circular-Electronics, from the project README
From the project README

Main components on the TUe-CBL-Circular-Electronics

AMS1117-3.3HT6873B5SPNRESP32-MINI-1-N4MT3608TP4056-42-ESOP8

TUe-CBL-Circular-Electronics bill of materials (BOM)

54 components, 38 distinct parts.

QtyPartRefs
1
AMS1117-3.3
U1
1
HT6873B5SPNR
U2
1
ESP32-MINI-1-N4
U3
1
MT3608
U4
1
TP4056-42-ESOP8
U5
1
UART
J1
1
USB_C_Receptacle_PowerOnly_6P
J2
1
Conn_01x06_Socket
J3
1
LIPO803860 2000mAh 3.7V
BT1
1
Dayton Audio CE4249N-4
LS1
1
BOOT
SW1
1
RESET
SW2
1
SSB43L-E3/52T
D1
1
PWR_LED
D2
1
STDBY_LED_RED
D3
1
CHRG_LED_GREEN
D4
1
6.8u
L1
4
1u
C1, C5, C6, C10
1
10u
C2
1
0.1u
C3
Show 18 more
QtyPartRefs
1
220u
C4
2
10u
C7, C8
1
0.1u
C9
1
1n
C11
2
22u
C12, C15
2
100n
C13, C14
2
10u
C17, C18
2
12k
R1, R3
7
10k
R2, R4, R12, R13, R14, R15, R16
1
470
R6
1
220
R7
1
499
R8
1
7.5k
R9
2
1k
R10, R11
2
5.1k
R17, R18
1
680
R19
1
390
R20
1
1.2k
R21

TUe-CBL-Circular-Electronics design files

The KiCad project lives in the bgb-0/TUe-CBL-Circular-Electronics repository on GitHub; these links point at the commit this page was built from.

TUe-CBL-Circular-Electronics: common questions

What microcontroller does the TUe-CBL-Circular-Electronics use?

The TUe-CBL-Circular-Electronics is built around the ESP32-MINI-1-N4, from the ESP32 family.

How big is the TUe-CBL-Circular-Electronics PCB?

The TUe-CBL-Circular-Electronics measures 45.3 × 40.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the TUe-CBL-Circular-Electronics?

54 components, from 38 distinct parts. The full bill of materials is listed on this page.

Where can I download the TUe-CBL-Circular-Electronics design files?

From the bgb-0/TUe-CBL-Circular-Electronics repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the TUe-CBL-Circular-Electronics design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which bgb-0 chose for the repository.

Can I test firmware for the TUe-CBL-Circular-Electronics 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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