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WAZO

DevMubarak1·WAZO·Hardware/PCB/KiCAD_files/Wazo.kicad_pcb

WAZO PCB layout, top view — open source ESP32 board by DevMubarak1
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About the WAZO PCB

WAZO is an open source ESP32 PCB design by DevMubarak1, published on GitHub under the MIT license. It is a 2-layer board measuring 60 × 60 mm, with 72 components from 36 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the BQ24250RGER, MAX20402AFLB/VY+T and MAX98357AETE+T. By type, the board carries 25 resistors, 22 capacitors, 4 ICs, 4 connectors, 4 diodes and 4 inductors.

It belongs with the audio, iot & wireless and power & battery designs in this gallery.

From the project

An Edge-AI Multilingual Voice Assistant for Indigenous Nigerian Languages & Dialects

Wazo (Yoruba for "wisdom") is a voice assistant built for Nigeria's 200+ million people who speak Yoruba, Igbo, Hausa, and Pidgin. Unlike Siri or Alexa, everything runs locally on a Raspberry Pi in your home - no internet required, no cloud servers, complete privacy.

Try asking Alexa something in Pidgin. Or with a Nigerian accent. Doesn't work, right?

Global tech companies train their voice assistants on American and British English. They don't understand our accents, can't speak our languages, and definitely don't get our cultural context. Plus they need constant internet (good luck with…

WAZO, from the project README
From the project README

Main components on the WAZO

BQ24250RGERMAX20402AFLB/VY+TMAX98357AETE+TESP32-S3-WROOM-1

WAZO bill of materials (BOM)

72 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ24250RGER
IC1
1
MAX20402AFLB/VY+T
MAX20402AFLB_VY+T
IC2
1
MAX98357AETE+T
IC3
1
ESP32-S3-WROOM-1
Espressif Systems
U1
1
USB_C_Receptacle_USB2.0
GCT
J1
2
B2B-PH-SM4-TB(LF)(SN)
JST Sales America Inc.
J2, J3
1
Conn_01x08
J4
1
RESET
CIT Relay and Switch
BOOT1
1
UBOOT
CIT Relay and Switch
BOOT2
2
ICS-43434
MK1, MK2
1
SMT-0540-S-R
SPK1
2
SLW-66527511-SMT-TR
CUI Devices
SW1, SW2
2
LED Red
Harvatek Corporation
LED1, LED2
4
WS2812B
D1, D2, D3, D4
2
FerriteBead_Small
FB1, FB2
1
1uH
L1
1
1.5uH
L2
8
1uF
C1, C2, C4, C14, C17, C18, C19, C20
1
33nF
C3
2
22uF
C5, C6
Show 16 more
QtyPartRefs
4
2.2uF
Murata Electronics
C7, C8, C12, C13
4
0.1uF
C9, C10, C11, C16
1
10uF
Murata Electronics
C15
2
220pF
Murata Electronics
C21, C22
2
5K1
Panasonic Electronic Components
R1, R2
1
1.5K
Panasonic Electronic Components
R3
5
10K
Panasonic Electronic Components
R4, R5, R6, R19, R20
3
0R
Panasonic Electronic Components
R7, R8, R25
1
249R
Panasonic Electronic Components
R9
1
274K
Panasonic Electronic Components
R10
1
267R
Panasonic Electronic Components
R11
2
100K
Panasonic Electronic Components
R12, R15
3
20K
Panasonic Electronic Components
R13, R14, R18
2
1K
Panasonic Electronic Components
R16, R17
2
33R
Panasonic Electronic Components
R21, R22
2
NC
R23, R24

WAZO design files

The KiCad project lives in the DevMubarak1/WAZO repository on GitHub; these links point at the commit this page was built from.

WAZO: common questions

What microcontroller does the WAZO use?

The WAZO is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the WAZO PCB?

The WAZO measures 60 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the WAZO?

72 components, from 36 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 WAZO design files?

From the DevMubarak1/WAZO repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the WAZO design in my own project?

Yes, under the terms of its MIT license, which DevMubarak1 chose for the repository.

Can I test firmware for the WAZO 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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