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Ei O T

mayermakes·Ei_O_T

Ei O T PCB layout, top view — open source ESP32 board by mayermakes
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About the Ei O T PCB

Ei O T is an open source ESP32 PCB design by mayermakes, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 44.6 × 105.4 mm, with 14 components from 11 distinct parts.

Its main chip is the ESP32-S2-WROOM, from the ESP32 family. Other key parts include the MCP1825S. By type, the board carries 5 resistors, 4 connectors, 2 ICs, 2 capacitors and 1 diode.

It belongs with the dev boards & breakouts and iot & wireless designs in this gallery.

From the project

Breadboard Friendly ESP32-S2 Development Kit / Breakout

All EI.O.T Boards are manufactured in either Europe or USA. There are NO genuine Boards made in Asia, and there probably never will be. This is necessary to ensure quality and safety for the applications developed with our Development Kits and breakout boards. USB-OTG functionality is built in Hardware wise. The Board can be assembled in two ways allowing dominantly left and right handed Developers to optimally use it, also by flipping it upside down you can choose to have the USB cable stick out the top or bottom.

Main components on the Ei O T

ESP32-S2-WROOMMCP1825S

Ei O T bill of materials (BOM)

14 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S2-WROOM
U1
1
MCP1825S
U2
1
105450-0101
J1
1
Conn_01x06_Female
J2
2
Conn_01x16
J3, J4
1
LED 0603
D1
1
0,1uF
C1
1
10uF
C2
2
5k1
R1, R2
2
10k
R3, R4
1
220
R5

Ei O T design files

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

Ei O T: common questions

What microcontroller does the Ei O T use?

The Ei O T is built around the ESP32-S2-WROOM, from the ESP32 family.

How big is the Ei O T PCB?

The Ei O T measures 44.6 × 105.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ei O T?

14 components, from 11 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 Ei O T design files?

From the mayermakes/Ei_O_T repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Ei O T design in my own project?

Yes, under the terms of its GPL-3.0 license, which mayermakes chose for the repository.

Can I test firmware for the Ei O T 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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