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ESP32-IoT-Board

ollieelliot·ESP32-IoT-Board·New layout/ESP32-IoT-Board-ChipAnt.kicad_pcb

ESP32-IoT-Board layout, top view — open source ESP32 board by ollieelliot

About the ESP32-IoT-Board

ESP32-IoT-Board is an open source ESP32 PCB design by ollieelliot, published on GitHub. It is a 4-layer board measuring 23.9 × 27.2 mm, with 50 components from 30 distinct parts.

Its main chip is the ESP32-C3FH4, from the ESP32 family. Other key parts include the MIC5528-3.3YMT-T5, ADXL335BCPZ-RL, USBLC6-2SC6, MCP73831-2-OT and MCP9700AT-ETT. By type, the board carries 22 capacitors, 11 resistors, 6 ICs, 2 connectors, 2 diodes and 2 inductors.

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

From the project

Challenging myself to make a tiny IoT device. Currently 22.8 mm in diameter, ~45 components, 2.4 Ghz chip antenna, microphone, temperature sensor, ESP32-C3 and LiPo charger circuit.

Main components on the ESP32-IoT-Board

MIC5528-3.3YMT-T5ESP32-C3FH4ADXL335BCPZ-RLUSBLC6-2SC6MCP73831-2-OTMCP9700AT-ETT

ESP32-IoT-Board bill of materials (BOM)

50 components, 30 distinct parts.

QtyPartRefs
1
MIC5528-3.3YMT-T5
IC1
1
ESP32-C3FH4
IC2
1
ADXL335BCPZ-RL
IC3
1
USBLC6-2SC6
U1
1
MCP73831-2-OT
U2
1
MCP9700AT-ETT
U3
1
FDN340P
Q1
1
40 Mhz Crystal
Y1
1
LiPo Battery
J1
1
USB_B_Micro
J2
1
2450AD18A7250
ANT1
1
GPIO9
JP1
1
INMP441ACEZ
MK1
1
NSR0530HT1G
D1
1
PWR_LED
D2
1
2nH
L1
1
TBD
L2
2
2.2uF
C1, C2
2
4.7uF
C3, C4
11
0.1uF
C5, C9, C10, C15, C16, C17, C19, C20 +3
Show 10 more
QtyPartRefs
1
1uF
C6
1
10nF
C7
1
10uF
C8
2
TBD
C11, C12
2
12pF
C13, C14
5
10k
R1, R3, R6, R7, R9
2
100k
R2, R5
1
2k
R4
1
1k
R8
2
1M
R10, R11

ESP32-IoT-Board design files

The KiCad project lives in the ollieelliot/ESP32-IoT-Board repository on GitHub; these links point at the commit this page was built from.

ESP32-IoT-Board: common questions

What microcontroller does the ESP32-IoT-Board use?

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

How big is the ESP32-IoT-Board?

The ESP32-IoT-Board measures 23.9 × 27.2 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the ESP32-IoT-Board?

50 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP32-IoT-Board design files?

From the ollieelliot/ESP32-IoT-Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP32-IoT-Board design in my own project?

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

Can I test firmware for the ESP32-IoT-Board 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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