HardLabs

Eidolon

alaotach·eidolon·hardware/pcbs/hologram.kicad_pcb

Eidolon PCB layout, top view — open source ESP32 board by alaotach

About the Eidolon PCB

Eidolon is an open source ESP32 PCB design by alaotach, published on GitHub. It is a 2-layer board measuring 52 × 43 mm, with 19 components from 13 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the BQ24074RGT, AP2112K-3.3 and MAX98357A. By type, the board carries 6 connectors, 5 capacitors, 4 ICs, 3 resistors and 1 switch.

It belongs with the displays & leds, power & battery and audio designs in this gallery.

From the project

- hardware/pcbs/hologram.kicadsch - The main schematic. - hardware/pcbs/hologram.kicadpro - KiCad project file for editing. - hardware/fab/outputs/3d/updated-pcb.stl - 3D model of the PCB.

- hardware/pcbs/hologram.kicadsch - The main schematic. - hardware/pcbs/hologram.kicadpro - KiCad project file for editing. - hardware/fab/outputs/3d/updated-pcb.stl - 3D model of the PCB.

Firmware: - firmware/eidolon/ - All firmware source code. - include/ - Header files. 3D Case Files: - hardware/fab/outputs/3d/updated-pcb.f3d - 3D models for the PCB. - hardware/fab/outputs/3d/eldolon-case.stl - 3D model of the case.

Eidolon, from the project README
From the project README

Main components on the Eidolon

BQ24074RGTESP32-C3-WROOM-02AP2112K-3.3MAX98357A

Eidolon bill of materials (BOM)

19 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ24074RGT
U1
1
ESP32-C3-WROOM-02
U2
1
AP2112K-3.3
U3
1
MAX98357A
U4
1
Oled conn
J1
1
Battery
J2
1
INMP441
J3
1
Speaker
J4
1
MPU6050
J6
1
USB_C_PLUG_USB2.0
USB_C_Plug_USB2.0
P1
1
SW_MEC_5E
SW1
5
C
C1, C2, C3, C4, C5
3
R
R1, R2, R3

Eidolon design files

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

Eidolon: common questions

What microcontroller does the Eidolon use?

The Eidolon is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the Eidolon PCB?

The Eidolon measures 52 × 43 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Eidolon?

19 components, from 13 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 Eidolon design files?

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

Can I use the Eidolon design in my own project?

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

Can I test firmware for the Eidolon 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.

Similar boards