HardLabs

ESP32-iPod-BLE

maxmacstn·iPod-Classic-6-mods·Mods/ESP32-Bluetooth-Audio/PCB/kicad/Line out version/ESP32-iPod-BLE.kicad_pcb

ESP32-iPod-BLE PCB layout, top view — open source ESP32 board by maxmacstn

About the ESP32-iPod-BLE PCB

ESP32-iPod-BLE is an open source ESP32 PCB design by maxmacstn, published on GitHub. It is a 2-layer board measuring 23.8 × 38.8 mm, with 19 components from 16 distinct parts.

Its main chip is the ESP32-WROOM-E, from the ESP32 family. Other key parts include the TLV76733DRVX, PCM1860 and 2N7002DW. By type, the board carries 8 capacitors, 4 ICs, 3 resistors, 2 connectors, 1 crystal and 1 diode.

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

From the project

For the Bluetooth mod, people usually use off-the-shelf Bluetooth transmitter modules connected to the headphone output. This method works, but the audio quality isn't the best, and you can't control playback via Bluetooth headphones or speakers.

For the Bluetooth mod, people usually use off-the-shelf Bluetooth transmitter modules connected to the headphone output. This method works, but the audio quality isn't the best, and you can't control playback via Bluetooth headphones or speakers.

Instead of using an off-the-shelf Bluetooth transmitter module, I made my own Bluetooth board for this purpose. The main controller is an ESP32.

ESP32-iPod-BLE, from the project README
From the project README

Main components on the ESP32-iPod-BLE

TLV76733DRVXESP32-WROOM-EPCM18602N7002DW

ESP32-iPod-BLE bill of materials (BOM)

19 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TLV76733DRVX
TLV76733DRVx
U1
1
ESP32-WROOM-E
U2
1
PCM1860
U3
1
2N7002DW
U4
1
CRYSTAL_GND24
Crystal_GND24
Y2
1
CONN_01X09_SOCKET
Conn_01x09_Socket
J1
1
CONN_01X06_PIN
Conn_01x06_Pin
J2
1
LED
D1
1
0.1UF
0.1uF
C1
1
22UF
22uF
C2
2
10UF
10uF
C3, C4
2
2.2UF
2.2uF
C5, C6
2
15PF
15pF
C7, C8
1
10K
R1
1
1K
R2
1
10K
RN1

ESP32-iPod-BLE design files

The KiCad project lives in the maxmacstn/iPod-Classic-6-mods repository on GitHub; these links point at the commit this page was built from.

ESP32-iPod-BLE: common questions

What microcontroller does the ESP32-iPod-BLE use?

The ESP32-iPod-BLE is built around the ESP32-WROOM-E, from the ESP32 family.

How big is the ESP32-iPod-BLE PCB?

The ESP32-iPod-BLE measures 23.8 × 38.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32-iPod-BLE?

19 components, from 16 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 ESP32-iPod-BLE design files?

From the maxmacstn/iPod-Classic-6-mods 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 ESP32-iPod-BLE design in my own project?

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

Can I test firmware for the ESP32-iPod-BLE 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 iPod-Classic-6-mods

Similar boards