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Demo board v2

aranya-project·demo-board-v2

Demo board v2 layout, top view — open source ESP32 board by aranya-project

About the Demo board v2

Demo board v2 is an open source ESP32 PCB design by aranya-project, published on GitHub. It is a 2-layer board measuring 68 × 42 mm, with 41 components from 23 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N4R2, from the ESP32 family. Other key parts include the TLV74333PDBVR and TP4054. By type, the board carries 13 resistors, 9 capacitors, 7 diodes, 5 connectors, 4 ICs and 2 transistors.

From the project

KiCad sources for the Aranya Embedded demo board

This is a demonstration board for Aranya Embedded built around the ESP32-S3. It provides various peripheral options used by the Aranya Embedded demo.

The IR transceiver U2 is necessary if you intend ot use IR networking. It uses the Vishay TFBS4711 which is somewhat pricey, so it has not been included by default.

The battery jack is a 2mm pitch JST PH connector, and the Qwiic connectors are 1mm pitch JST SH connectors. The RGB LED is a WS2812 5mm LED module. The SD card slot is a SameSky MSD-4-A, and the USB jack is a GCT USB4105. If you search around you will find many alternatives for…

Demo board v2, from the project README
From the project README

Main components on the Demo board v2

TLV74333PDBVRTP4054ESP32-S3-WROOM-1-N4R2

Demo board v2 bill of materials (BOM)

41 components, 23 distinct parts.

QtyPartRefs
2
TLV74333PDBVR
TLV74333PDBV
U1, U3
1
TP4054
MCP73831-2-OT
U4
1
ESP32-S3-WROOM-1-N4R2
ESP32-S3-WROOM-1
U5
2
SI2301
Q1, Q2
1
WAFER-PH2.0-2PWB
BATT
J1
1
MSD-4-A
Micro SD
J2
1
USB4105
USB_C_Receptacle_USB2.0_16P
J3
1
WAFER-SH1.0-4PWB
Qwiic 1
J4
1
WAFER-SH1.0-4PWB
Qwiic 2
J5
1
TS-1003S-05026
BOOT
SW1
1
XL-2012SURC
CHG
D1
1
XL-2012SURC
S1
D2
1
XL-2012SURC
S2
D3
1
XL-2012SURC
S3
D4
1
NRVB130T1G
D5
1
PRTR5V0U2X
D6
1
WS2812B
D7
5
CL21A475KPFNNNG
4.7u
C1, C4, C6, C7, C8
4
CL21B105KBFNNNE
1u
C5, C9, C10, C11
4
RC0805FR-0747KL
47K
R1, R10, R12, R16
Show 3 more
QtyPartRefs
5
RC0805FR-072K2L
2.2K
R5, R6, R7, R8, R9
2
RC0805FR-075K1L
5.1K
R11, R15
2
RC0805FR-0722RL
22
R13, R14

Demo board v2 design files

The KiCad project lives in the aranya-project/demo-board-v2 repository on GitHub; these links point at the commit this page was built from.

Demo board v2: common questions

What microcontroller does the Demo board v2 use?

The Demo board v2 is built around the ESP32-S3-WROOM-1-N4R2, from the ESP32 family.

How big is the Demo board v2?

The Demo board v2 measures 68 × 42 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Demo board v2?

41 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Demo board v2 design files?

From the aranya-project/demo-board-v2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Demo board v2 design in my own project?

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

Can I test firmware for the Demo board v2 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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