HearingAid ESP
About the HearingAid ESP PCB
HearingAid ESP is an open source ESP32 PCB design by AveryLion03, published on GitHub. It is a 2-layer board measuring 90.8 × 58.2 mm, with 44 components from 30 distinct parts.
Its main chip is the ESP32-S3, from the ESP32 family. Other key parts include the AP2112K-3.3, MAX98357A, TP4056 and DW01A. By type, the board carries 15 resistors, 9 capacitors, 6 ICs, 5 diodes, 3 switches and 2 transistors.
From the project
Plan II Thesis - Avery Atchley
Main components on the HearingAid ESP
HearingAid ESP bill of materials (BOM)
44 components, 30 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP2112K-3.3 | SOT-23-5 | U1 |
| 2 | MAX98357A | TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U2, U5 |
| 1 | TP4056 | SO08-PAD-300 | U3 |
| 1 | DW01A | SOT95P280X145-6N | U4 |
| 1 | ESP32-S3 | QFN-56-1EP_7x7mm_P0.4mm_EP4x4mm | U8 |
| 1 | PMOS | DMP3099L-7 | Q1 |
| 1 | FS8205A | SOT-23-6 | Q2 |
| 1 | XRCGB40M000F1S1BR0 | OSC_XRCGB40M000F1S1BR0 | Y1 |
| 1 | 12402012E212A | AMPHENOL_12402012E212A | J1 |
| 2 | Battery_Cell | BatteryHolder_Keystone_3034_1x20mm_CustomCourtyard | BT1, BT2 |
| 1 | 450404015514 | 450404015514 | S1 |
| 2 | SW_Push | SW_B3U-1000P | SW1, SW2 |
| 2 | GREEN_LED | LED_0402_1005Metric | D1, D4 |
| 2 | RED_LED | LED_0402_1005Metric | D2, D3 |
| 1 | D_Schottky_Small_Filled | SOD323_F_ | D5 |
| 2 | 4.7UF 4.7uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C3 |
| 1 | 10UF 10uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2 |
| 2 | 100NF 100nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C4, C9 |
| 1 | 1uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C5 |
| 2 | 10pF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6, C7 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1UF 1uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C8 |
| 1 | 100K 100k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1 |
| 2 | 5.1K 5.1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R3 |
| 3 | 1k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4, R5, R7 |
| 1 | 2k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R6 |
| 1 | 100k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R8 |
| 1 | 100 | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R9 |
| 2 | 100K 100k | R_0402_1005Metric | R10, R13 |
| 2 | 470 | R_0402_1005Metric | R11, R12 |
| 2 | 10k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R14, R15 |
HearingAid ESP design files
The KiCad project lives in the AveryLion03/HearingAid repository on GitHub; these links point at the commit this page was built from.
HearingAid ESP: common questions
What microcontroller does the HearingAid ESP use?
The HearingAid ESP is built around the ESP32-S3, from the ESP32 family.
How big is the HearingAid ESP PCB?
The HearingAid ESP measures 90.8 × 58.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the HearingAid ESP?
44 components, from 30 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 HearingAid ESP design files?
From the AveryLion03/HearingAid 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 HearingAid ESP design in my own project?
The repository has no license, so all rights stay with AveryLion03. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the HearingAid ESP 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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