Hidden Bone Conduction Headphones
About the Hidden Bone Conduction Headphones PCB
Hidden Bone Conduction Headphones is an open source ESP32 PCB design by jrydin01, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 32 × 45 mm, with 14 components from 14 distinct parts.
Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the ESP32_L, ESP32_R, PCM5102A, TP4056-42-ESOP8 and TP4056. By type, the board carries 7 ICs, 4 switches, 2 resistors and 1 diode.
It belongs with the audio, iot & wireless and power & battery designs in this gallery.
From the project
bone conduction headphones that sit on your collarbone, hidden under your shirt
Hidden Headphones is an open-source hardware project for a discrete, neckband-style bone conduction audio device. The electronics sit in a small rear enclosure while flexible wiring runs through the neckband to vibration pads positioned on the collarbone. The goal is a hands-free listening device that can be worn beneath a shirt.
This repository contains the design documentation, KiCad source files, firmware, bill of materials, and OpenSCAD enclosure model for the current prototype revision.
Main components on the Hidden Bone Conduction Headphones
Hidden Bone Conduction Headphones bill of materials (BOM)
14 components, 14 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-MINI-1 | ESP32-S2-MINI-1 | U1 |
| 1 | ESP32_L | PinHeader_1x08_P2.54mm_Vertical | U1_L |
| 1 | ESP32_R | PinHeader_1x04_P2.54mm_Vertical | U1_R |
| 1 | PCM5102A | TSSOP-20_4.4x6.5mm_P0.65mm | U2 |
| 1 | PCM5102A | PinHeader_1x06_P2.54mm_Vertical | U2_DAC |
| 1 | TP4056-42-ESOP8 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U3 |
| 1 | TP4056 | PinHeader_1x06_P2.54mm_Vertical | U3_TP4056 |
| 1 | POWER | SW_Slide_SPDT_EG1218 | SW1 |
| 1 | SW_Push | KSA_Tactile_SPST | SW2 |
| 1 | VOL- | SW_PUSH_6mm | SW3 |
| 1 | PLAY | SW_PUSH_6mm | SW4 |
| 1 | STATUS | LED_D3.0mm | D1 |
| 1 | 1.2kΩ | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 10kΩ | R_0805_2012Metric | R2 |
Hidden Bone Conduction Headphones design files
The KiCad project lives in the jrydin01/hidden-headphones repository on GitHub; these links point at the commit this page was built from.
Hidden Bone Conduction Headphones: common questions
What microcontroller does the Hidden Bone Conduction Headphones use?
The Hidden Bone Conduction Headphones is built around the ESP32-S3-MINI-1, from the ESP32 family.
How big is the Hidden Bone Conduction Headphones PCB?
The Hidden Bone Conduction Headphones measures 32 × 45 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Hidden Bone Conduction Headphones?
14 components, from 14 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 Hidden Bone Conduction Headphones design files?
From the jrydin01/hidden-headphones 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 Hidden Bone Conduction Headphones design in my own project?
Yes, under the terms of its CC0-1.0 license, which jrydin01 chose for the repository.
Can I test firmware for the Hidden Bone Conduction Headphones 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 hidden-headphones
Similar boards
ESP32Open Book Abridged Edition
joeycastillo
85 × 115 mm65 parts2LCC-BY-SA-4.08.1k
ESP32Badge
atopile
56.3 × 39 mm239 parts4LMIT4.0k
ESP32Esp32 minimal
36.2 × 26.8 mm20 parts2LMIT4.0k
ESP32Racer
StuckAtPrototype
36 × 50.2 mm70 parts4LApache-2.03.8k
ESP32Controller
29 × 74 mm58 parts4LApache-2.03.8k
ESP32Bitaxe
skot
56.5 × 99.8 mm86 parts4LCERN-OHL-S-2.01.4k