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Obsidian-ESP32

singleboardsolutions·Obsidian-ESP32

Obsidian-ESP32 PCB layout, top view — open source ESP32 board by singleboardsolutions

About the Obsidian-ESP32 PCB

Obsidian-ESP32 is an open source ESP32 PCB design by singleboardsolutions, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 65 × 56 mm, with 51 components from 29 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the AP2114H-3.3, CP2102N-A01-GQFN24 and MCP23017_SO. By type, the board carries 19 resistors, 13 capacitors, 7 connectors, 5 ICs, 4 diodes and 2 switches.

From the project

Design Files for Obsidian ESP32

Copyright Single Board Solutions LLC 2019 Licensed under CERN OHL v.1.2

Main components on the Obsidian-ESP32

AP2114H-3.3ESP32-WROOM-32CP2102N-A01-GQFN24MCP23017_SO

Obsidian-ESP32 bill of materials (BOM)

51 components, 29 distinct parts.

QtyPartRefs
2
AP2114H-3.3
U1, U2
1
ESP32-WROOM-32
U3
1
CP2102N-A01-GQFN24
U4
1
MCP23017_SO
U6
1
MBT3904DW1
Q1
1
PHX MPT 2.54mm 2pol
J1
1
USB_B_Micro
J2
1
2.54mm 1x05 right angle
J3
1
2.54mm 2x04 straight
J4
1
IO16/17
J5
1
PJ320D
J6
1
2.54mm 2x20 straight
P1
2
2-1437565-7
SW1, SW2
1
SP0503BAHTG
D1
1
LED_Green
D2
1
LED_Red
D3
1
LED_yellow
D4
2
.22uF
C1, C2
3
.1uF
C3, C4, C5
2
4.7uF
C6, C7
Show 9 more
QtyPartRefs
2
100nF
C8, C9
2
10 uF
C10, C11
2
10n
C12, C13
8
10k
R1, R4, R10, R11, R12, R17, R18, R19
1
22.1k
R2
1
47.5k
R3
3
1k
R5, R6, R7
2
220
R8, R9
4
1.8k
R13, R14, R15, R16

Obsidian-ESP32 design files

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

Obsidian-ESP32: common questions

What microcontroller does the Obsidian-ESP32 use?

The Obsidian-ESP32 is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Obsidian-ESP32 PCB?

The Obsidian-ESP32 measures 65 × 56 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Obsidian-ESP32?

51 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Obsidian-ESP32 design files?

From the singleboardsolutions/Obsidian-ESP32 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

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

Yes, under the terms of its CERN-OHL-1.2 license, which singleboardsolutions chose for the repository.

Can I test firmware for the Obsidian-ESP32 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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