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ESP32-Alarm clock

fehlfarbe·ESP32-Alarm-clock·hardware/pcb/mp3alarm.kicad_pcb

ESP32-Alarm clock PCB layout, top view — open source ESP32 board by fehlfarbe

About the ESP32-Alarm clock PCB

ESP32-Alarm clock is an open source ESP32 PCB design by fehlfarbe, published on GitHub under the MIT license. It is a 2-layer board measuring 67 × 54 mm, with 65 components from 36 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the RDA5807FP, UDA1334ATS and AMS1117-3.3. By type, the board carries 22 resistors, 19 capacitors, 11 connectors, 4 ICs, 4 diodes and 2 switches.

It belongs with the audio, rf & radio and iot & wireless designs in this gallery.

From the project

This is an ESP32 based alarm clock that plays mp3 files from SD, webstreams or even FM radio. You can configure multiple alarms and add new songs to your sd card with a simple webinterface.

This is an ESP32 based alarm clock that plays mp3 files from SD, webstreams or even FM radio. You can configure multiple alarms and add new songs to your sd card with a simple webinterface.

Photos of the current PCB version (without assembled radio antenna connector J10):

- designed for ESP32 S3 microcontroller - plays audio from different sources: - MP3/AAC from SD - webstreams via WiFi - FM radio via RDA5807FP module - output via I2S to a stereo decoder like the UDA1334A. - see current time on TM1637 4-Digit Digital LED display - see current WiFi state with WS2812 RGB LED - simple config…

ESP32-Alarm clock, from the project README
From the project README

Main components on the ESP32-Alarm clock

RDA5807FPUDA1334ATSESP32-S3-WROOM-1AMS1117-3.3

ESP32-Alarm clock bill of materials (BOM)

65 components, 36 distinct parts.

QtyPartRefs
1
RDA5807FP
IC1
1
UDA1334ATS
U2
1
ESP32-S3-WROOM-1
U3
1
AMS1117-3.3
U4
1
Crystal
Y1
1
AUDIO
J1
1
SW0
J2
1
SW1
J3
1
AudioJack3
J4
1
I2C
J5
1
TM1637
J6
1
105162-0001
microSD
J7
1
5V
J8
1
ANT
J9
1
Conn_Coaxial
J10
1
USB_C_Receptacle_USB2.0
J11
1
SW_RST
SW1
1
SW_BOOT
SW2
2
WS2812B
D1, D2
1
D_Schottky
D3
Show 16 more
QtyPartRefs
1
PWR
D4
2
FerriteBead_Small
FB1, FB2
2
1nF
C1, C21
1
22nF
C2
6
10uF
C3, C4, C5, C12, C14, C20
1
22uF
C6
1
1uF
C7
4
0.1uF
C10, C11, C13, C19
2
47uF
C15, C16
2
0.01uF
C17, C18
1
500
R1
14
10k
R2, R3, R8, R11, R12, R13, R14, R15 +6
2
5k1
R6, R7
1
680
R9
2
220k
R10, R16
2
100
R17, R18

ESP32-Alarm clock design files

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

ESP32-Alarm clock: common questions

What microcontroller does the ESP32-Alarm clock use?

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

How big is the ESP32-Alarm clock PCB?

The ESP32-Alarm clock measures 67 × 54 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32-Alarm clock?

65 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP32-Alarm clock design files?

From the fehlfarbe/ESP32-Alarm-clock repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

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

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

Can I test firmware for the ESP32-Alarm clock 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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