ESP32 Eurorack Audio Module
About the ESP32 Eurorack Audio Module
ESP32 Eurorack Audio Module is an open source ESP32 PCB design by ctag-fh-kiel, published on GitHub. It is a 4-layer board measuring 100 × 100 mm, with 167 components from 66 distinct parts.
Its main chip is the 356-ESP32WROIB(16MB), from the ESP32 family. Other key parts include the 998-MIC803-31D3VM3TR, 634-CP2102NA01GQFN24, 919-R-78E3.3-1.0, 584-ADP7118AUJZ3.3R7 and 238-WM8731SEDS/V. By type, the board carries 61 resistors, 56 capacitors, 18 connectors, 10 ICs, 5 transistors and 4 diodes.
It belongs with the audio designs in this gallery.
From the project
Open source eurorack audio module based on ESP32
Main components on the ESP32 Eurorack Audio Module
ESP32 Eurorack Audio Module bill of materials (BOM)
167 components, 66 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 356-ESP32WROIB(16MB) ESP32-WROVER | ESP32-WROVER | U201 |
| 1 | 998-MIC803-31D3VM3TR MIC803 | SOT-23 | U202 |
| 1 | 634-CP2102NA01GQFN24 CP2102N-A01-GQFN24 | QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U301 |
| 1 | 919-R-78E3.3-1.0 R-78E3.3-1.0 | SIP3_11.6x8.5mm | U601 |
| 1 | 584-ADP7118AUJZ3.3R7 ADP7118 | TSOT-23-5 | U602 |
| 1 | 238-WM8731SEDS/V WM8731 | SSOP-28_5.3x10.2mm_P0.65mm | U701 |
| 1 | 595-TL074CPWR TL074 | TSSOP-14_4.4x5mm_P0.65mm | U702 |
| 2 | 579-MCP6004-I/ST MCP6004 | TSSOP-14_4.4x5mm_P0.65mm | U801, U802 |
| 1 | 579-MCP3208T-CI/SL MCP3208 | SOIC-16_3.9x9.9mm_P1.27mm | U803 |
| 3 | 750-SS8050-G SS8050-G | SOT-23 | Q301, Q302, Q303 |
| 2 | 750-SS8050-G Q_NPN_BEC | SOT-23 | Q801, Q802 |
| 1 | 815-ABLS211.2896B4YT 11.289600MHz | Crystal_SMD_HC49-SD | Y701 |
| 1 | 105017-0001 USB_B_Micro | USB_Micro-B_Molex-105017-0001 | J302 |
| 1 | 798-DM3D-SF Micro_SD_Card | microSD_HC_Hirose_DM3D-SF | J402 |
| 1 | PWR | PinHeader_2x05_P2.54mm_Vertical | J601 |
| 1 | AUEXT | PinHeader_2x05_P2.54mm_Vertical_SMD | J701 |
| 1 | RIN | THONKICONN | J702 |
| 1 | LIN/MONO | THONKICONN | J703 |
| 1 | ROUT | THONKICONN | J704 |
| 1 | LOUT | THONKICONN | J705 |
Show 46 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TRG0 | THONKICONN | J801 |
| 1 | CVIN1 | THONKICONN | J802 |
| 1 | CVIN3 | THONKICONN | J803 |
| 1 | CVIN2 | THONKICONN | J804 |
| 2 | CVIN4 | THONKICONN | J805, J807 |
| 1 | TRG1 | THONKICONN | J806 |
| 1 | CVIN5 | THONKICONN | J808 |
| 1 | CVIN6 | THONKICONN | J809 |
| 1 | CVIN7 | THONKICONN | J810 |
| 1 | MDF7-9S-2.54DSA(55) TFT_ILI9341 | TFT_2.2 | LCD501 |
| 1 | Level | Alpha_9mm_stereo | RV701 |
| 4 | 10k lin | Alpha_9mm | RV801, RV802, RV803, RV804 |
| 1 | SEL | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW501 |
| 1 | 979-6425.0101 TRG0 | SW_6425 | SW801 |
| 1 | 979-6425.0101 TRG1 | SW_6425 | SW802 |
| 1 | 534-5019 TP_IO19 | TestPoint_Keystone_5019_Minature | TP101 |
| 2 | 511-STPS2L40ZFY STPS2L40ZFY | D_SOD-123 | D601, D603 |
| 1 | 595-LM4040B10IDBZR LM4040B-10 | SOT-23 | D602 |
| 1 | 743-INL-5AR30 ~ | LED_D5.0mm_Clear | D604 |
| 2 | 623-2508056017Y2 600 | C_0805_2012Metric | L601, L602 |
| 15 | 81-GRM21BR70J106KA3L 10u | C_0805_2012Metric | C201, C301, C401, C501, C502, C607, C701, C705 +7 |
| 3 | 603-CC603KRX7R7BB105 1u | C_0603_1608Metric | C202, C814, C815 |
| 19 | 81-GRM033C71C104KE4J 100n | C_0603_1608Metric | C302, C402, C503, C504, C505, C601, C605, C706 +11 |
| 3 | 647-F931C226MAA 22u | CP_EIA-3216-12_Kemet-S | C602, C603, C604 |
| 1 | 710-885012209005 10u | C_1210_3225Metric | C606 |
| 1 | 661-APXG160A102MJA0G 1000u | CP_Elec_10x12.6 | C608 |
| 2 | 710-885012206055 220p | C_0603_1608Metric | C702, C708 |
| 4 | 80-C0603C180J5G 18p | C_0603_1608Metric | C703, C704, C709, C717 |
| 8 | 77-VJ0603Y102KXQCBC 1n | C_0603_1608Metric | C802, C803, C805, C806, C808, C809, C811, C812 |
| 14 | 652-CR0603FX-1002ELF 10k | R_0603_1608Metric | R201, R301, R302, R305, R306, R401, R402, R403 +6 |
| 1 | 652-CR0603FX-2212ELF 22.1k | R_0603_1608Metric | R303 |
| 1 | 603-RC0603FR-0747K5L 47.5k | R_0603_1608Metric | R304 |
| 1 | 652-CR0603FX-2200ELF 220 | R_0603_1608Metric | R601 |
| 1 | 603-AC0603FR-0768RL 68 | R_0805_2012Metric | R602 |
| 1 | 279-CRGP2512F10R 10 | R_2512_6332Metric | R603 |
| 2 | 652-CR0603-FX3301ELF 3k3 | R_0603_1608Metric | R701, R705 |
| 2 | 652-CR0603FX-2202ELF 22k | R_0603_1608Metric | R702, R706 |
| 6 | 652-CR0603FX-5601ELF 5k6 | R_0603_1608Metric | R703, R704, R707, R708, R710, R714 |
| 4 | 652-CR0603FX-3902ELF 39k | R_0603_1608Metric | R709, R712, R713, R716 |
| 2 | 652-CR0603FX-1001ELF 1k | R_0603_1608Metric | R711, R715 |
| 2 | 652-CR0603FX-1803ELF 180k | R_0603_1608Metric | R803, R810 |
| 2 | 652-CR0603FX-4702ELF 47k | R_0603_1608Metric | R804, R811 |
| 6 | 652-CR0603FX-2003ELF 200k | R_0603_1608Metric | R805, R812, R819, R821, R825, R827 |
| 2 | 652-CR0603FX-3302ELF 33k | R_0603_1608Metric | R806, R813 |
| 10 | 603-RC0603FR-07100KL 100k | R_0603_1608Metric | R807, R808, R809, R815, R816, R818, R823, R824 +2 |
| 4 | 652-CR0603-FX6652ELF 66.5k | R_0603_1608Metric | R820, R822, R826, R828 |
ESP32 Eurorack Audio Module design files
The KiCad project lives in the ctag-fh-kiel/esp32-eurorack-audio repository on GitHub; these links point at the commit this page was built from.
ESP32 Eurorack Audio Module: common questions
What microcontroller does the ESP32 Eurorack Audio Module use?
The ESP32 Eurorack Audio Module is built around the 356-ESP32WROIB(16MB), from the ESP32 family.
How big is the ESP32 Eurorack Audio Module?
The ESP32 Eurorack Audio Module measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the ESP32 Eurorack Audio Module?
167 components, from 66 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 Eurorack Audio Module design files?
From the ctag-fh-kiel/esp32-eurorack-audio repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the ESP32 Eurorack Audio Module design in my own project?
The repository has no license, so all rights stay with ctag-fh-kiel. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ESP32 Eurorack Audio Module 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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