HardLabs

Dev board r2

family-mruby·narya-board·retro/dev/dev-board/dev-board-r2.kicad_pcb

Dev board r2 layout, top view — open source ESP32 board by family-mruby
Simulate this board

About the Dev board r2

Dev board r2 is an open source ESP32 PCB design by family-mruby, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 90 × 70 mm, with 109 components from 35 distinct parts.

Its main chip is the ESP32-WROVER-IE(16MB), from the ESP32 family. Other key parts include the ESP32-S3-WROOM-1(N16R8), CH340C, TPS2065CDBV, AP7361C-33E and PESD5V0U2BT. By type, the board carries 38 resistors, 37 capacitors, 15 ICs, 4 transistors, 3 diodes and 2 connectors.

It belongs with the iot & wireless, dev boards & breakouts and audio designs in this gallery, and the repository also holds 2 earlier revisions of it.

From the project

Dual ESP32 board for Family mruby

A dual ESP32 development board featuring both ESP32-WROVER-IE and ESP32-S3-WROOM-1 modules on a single PCB.

Narya Board is a versatile hardware platform that integrates two popular ESP32 variants, providing developers with flexibility for WiFi/Bluetooth applications, IoT prototyping, and embedded systems development.

- Dual ESP32 Modules: - ESP32-WROVER-IE (16MB Flash) - ESP32 classic with PSRAM - ESP32-S3-WROOM-1 (N16R8) - Latest ESP32-S3 with 16MB Flash and 8MB PSRAM - Video Output: NTSC composite video output for retro gaming and multimedia applications - Audio Output: Integrated audio…

Dev board r2, from the project README
From the project README

Main components on the Dev board r2

ESP32-WROVER-IE(16MB)ESP32-S3-WROOM-1(N16R8)CH340CTPS2065CDBVAP7361C-33EPESD5V0U2BTPESD5V0S1BA_C5261083ZX-HY2.0-4PWZPCM5102APWR

Dev board r2 bill of materials (BOM)

109 components, 35 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROVER-IE(16MB)
U1
1
ESP32-S3-WROOM-1(N16R8)
U2
2
CH340C
U3, U14
2
TPS2065CDBV
U4, U10
1
AP7361C-33E
U5
3
PESD5V0U2BT
U6, U11, U16
2
PESD5V0S1BA_C5261083
U7, U12
2
ZX-HY2.0-4PWZ
U8, U9
1
PCM5102APWR
U13
4
BSS138
Q1, Q2, Q3, Q4
1
Conn_02x10_Odd_Even
J5
1
HDR-IDC-2.54-2X5P
P1
1
AV-5
AV1
1
PJ-327C-4A
Audio1
1
TF PUSH
Card1
1
ME6211C33M5G-N
LDO1
2
TS342A2P
S3-EN, S3-IO0
1
USB-231-ARY
USB2
2
TYPE-C-31-M-12
USBC1, USBC2
1
TS342A2P
WR-IO0
Show 15 more
QtyPartRefs
1
LED GREEN
D1
2
LED RED
D2, D3
21
0.1uF
C1, C4, C5, C6, C7, C8, C9, C10 +13
7
10uF
C2, C3, C19, C21, C22, C26, C27
2
DNP
C12, C37
1
120uF
C14
2
2.2uF
C29, C30
2
2.2nF
C31, C32
2
22uF
C35, C36
4
5.1K
R1, R6, R7, R37
23
10K
R2, R3, R4, R5, R8, R9, R10, R11 +15
1
100
R12
3
2K
R19, R35, R36
5
22
R27, R28, R30, R31, R32
2
470
R29, R33

Dev board r2 design files

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

Dev board r2: common questions

What microcontroller does the Dev board r2 use?

The Dev board r2 is built around the ESP32-WROVER-IE(16MB), from the ESP32 family.

How big is the Dev board r2?

The Dev board r2 measures 90 × 70 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Dev board r2?

109 components, from 35 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 Dev board r2 design files?

From the family-mruby/narya-board repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Dev board r2 design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which family-mruby chose for the repository.

Can I test firmware for the Dev board r2 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.

More boards in narya-board

Earlier revisions in the repo: dev-board-r1, dev-board

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