4 layers48 × 110 mm
2 layers
ESP32 Audio Echo
praveen-git-08/ESP_32-AUDIO_ECHO_PROCESSORAudio Echo Processor – Simulation Based DSP & Circuit Design This project demonstrates how audio effects can be designed and tested entirely through simulation tools. Using LTSpice, Wokwi, and KiCad, I modeled an audio echo processor that applies delay and attenuation to signals, creating a realistic reverberation effect.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 40
- Pads
- 80
- Tracks, vias
- 134, 9
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 5 Jul 2026
- Updated
- 5 Jul 2026
Overview
ESP32 Audio Echo is an open-source printed circuit board by praveen-git-08, from the praveen-git-08/ESP_32-AUDIO_ECHO_PROCESSOR repository on GitHub. It is a 2-layer board with 9 parts on 40 nets, routed with 134 tracks and 9 vias.
It is built around the ESP32-WROOM-32D and TL072. Its parts include 3 resistors, 2 capacitors, 2 ICs and 2 connectors. It belongs with the audio and music boards and the ESP32 boards of this library.
Main components
2README
README.mdESP32-Embedded-Audio-Echo-Processor
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | Conn_01x01_Pin | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical | J1, J2 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | ESP32-WROOM-32D | RF_Module:ESP32-WROOM-32D | U2 |
| 1 | TL072 | Package_SO:JEITA_SOIC-8_3.9x4.9mm_P1.27mm | U1 |
Questions
What parts does the ESP32 Audio Echo use?
9 parts, built around the ESP32-WROOM-32D and TL072. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the ESP32 Audio Echo KiCad files?
From the praveen-git-08/ESP_32-AUDIO_ECHO_PROCESSOR repository on GitHub, at the commit this page was made from: the board is ESP32_Audio_Echo.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ESP32 Audio Echo design in my own project?
Its repository states no licence, so its author keeps all rights: ask praveen-git-08 before reusing the design.
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