FreeDSP-aurora
About the FreeDSP-aurora PCB
FreeDSP-aurora is an open source ESP32 PCB design by freeDSP, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 110 × 110 mm, with 502 components from 104 distinct parts.
Its main chip is the ESP32-WROOM-32U, from the ESP32 family. Other key parts include the ADAU1452WBCPZ, 25AA1024T-I/SM, TLE2426IDR, ADM811TARTZ-REEL and LM1117MP-5.0/NOPB. By type, the board carries 251 capacitors, 191 resistors, 37 ICs, 15 crystals, 1 transistor and 1 jumper.
It belongs with the iot & wireless, audio and displays & leds designs in this gallery.
From the project
freeDSP ADAU1452 with 8 analog input, 8 analog outputs, S/P-DIF I/O, ADAT I/O, USB Audio Class2, WiFi, Bluetooth
An open source and open hardware freeDSP board based on ADAU1452 with 8 analog I/O, S/P-DIF I/O, ADAT I/O, USB Audio, WiFi, Bluetooth.
It supports various and convenient physical addons and multiple software plugins, and is controlled by web interface.
Analog Devices ADAU1452, 294.912 MHz, 32-bit SigmaDSP 6144 SIMD instructions per sample @ 48kHz fs 40kWords of data RAM 800ms digital audio delay pool @ 48kHz fs 8 stereo ASRCs with 139dB DNR XMOS XE216-512-TQ128 for multichannel bidirectional audio streaming ESP32 for WiFi or Bluetooth control AKM AK4458 32bit-DAC AKM AK5558 32bit-ADC…
Main components on the FreeDSP-aurora
FreeDSP-aurora bill of materials (BOM)
502 components, 104 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ADAU1452WBCPZ IC_ADAU1452 Analog Devices Inc. | QFP72_10x10_EP_Handsoldering | IC101 |
| 1 | 25AA1024T-I/SM IC_25AA1024 Microchip Technology | SOIJ8_5.3x5.3mm_P1.27mm | IC102 |
| 1 | TLE2426IDR IC_TLE2426ID Texas Instruments | SOIC8_3.9x4.9mm_Pitch1.27mm | IC103 |
| 1 | ADM811TARTZ-REEL IC_ADM811TARTZ Analog Devices Inc. | SOT143 | IC104 |
| 2 | LM1117MP-5.0/NOPB IC_LM1117MP-5.0 Texas Instruments | SOT223 | IC105, IC107 |
| 2 | NCP1117LPST33T3G IC_NCP1117LPST33 ON Semiconductor | SOT223 | IC106, IC409 |
| 16 | OPA1652AIDR IC_OPA1652AIDR Texas Instruments | SOIC8_3.9x4.9mm_Pitch1.27mm | IC201, IC202, IC203, IC204, IC206, IC207, IC208, IC209 +8 |
| 1 | AK5558VN IC_AK5558VN AKM Semiconductor Inc. | QFN64_9x9mm_Pitch0.5mm_EP_Handsoldering | IC205 |
| 1 | AK4458VN IC_AK4458VN AKM Semiconductor Inc. | QFN48_7x7mm_Pitch0.5mm_EP_Handsoldering | IC305 |
| 1 | NC7WZ07P6X IC_NC7WZ07 ON Semiconductor | SC-70-6 | IC401 |
| 1 | SN74LVC1G175DCKR NC7SZ175 Texas Instruments | SOT-363_SC-70-6 | IC402 |
| 1 | XE216-512-TQ128-C20 IC_XE216-512-TQ128 XMOS | TQFP-128_14x14mm_Pitch0.4mm_EP_Handsoldering | IC403 |
| 1 | CS2100CP-CZZ IC_CS2100CP Cirrus Logic Inc. | MSOP-10_3x3mm_Pitch0.5mm | IC404 |
| 2 | NC7SZ157P6X NC7SZ157 ON Semiconductor | SC-70-6 | IC405, IC406 |
| 1 | NCP4681DSQ25T1G TLV70025 ON Semiconductor | SC70-5 | IC407 |
| 1 | IS25LP080D-JNLE IC_IS25LP080D ISSI, Integrated Silicon Solution Inc | SOIC8_3.9x4.9mm_Pitch1.27mm | IC408 |
| 1 | TLV62565DBVR IC_TLV62565 Texas Instruments | SOT-23-5 | IC410 |
| 1 | ESP32-WROOM-32U Espressif Systems | ESP32-WROOM-32U | IC501 |
| 1 | IC_NCP1117LPST33 | SOT223 | IC502 |
| 1 | STD2805T4 Q_STD2805 STMicroelectronics | TO-252-2 | Q101 |
Show 84 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1-215079-4 MicroMatch14 TE Connectivity AMP Connectors | MM-14G | X101 |
| 1 | PRPC008DAAN-RC HDR_02x08 Sullins Connector Solutions | HDR_02x08 | X102 |
| 1 | PRPC003SAAN-RC Conn_01x03 Sullins Connector Solutions | Molex_PicoBlade_530470310 | X103 |
| 1 | 1-215079-0 CON_MicroMatch-10G TE Connectivity AMP Connectors | MM-10G | X104 |
| 1 | 0430450428 CON_MicroFit3_02x02 Molex, LLC | Microfit3_43045-0428 | X105 |
| 1 | Conn_01x02 | HDR_01x02 | X106 |
| 2 | PRPC013DAAN-RC CON_IDC26 Sullins Connector Solutions | IDC26 | X201, X301 |
| 1 | PRPC005SAAN-RC HDR_01x05 Sullins Connector Solutions | PinHeader_1x05_P2.54mm_Vertical | X401 |
| 1 | PRPC010DAAN-RC CON_HDR_02x10 Sullins Connector Solutions | HDR_02x10 | X402 |
| 1 | 0022232041 Conn_01x04 Molex, LLC | Molex_KK254_0022032041 | X501 |
| 1 | 0530470510 Conn_01x05 Molex, LLC | Molex_PicoBlade_530470510 | X502 |
| 1 | 0530470310 Conn_01x03 Molex, LLC | Molex_PicoBlade_530470310 | X503 |
| 1 | PRPC006SAAN-RC HDR_01x06 Sullins Connector Solutions | PinHeader_1x06_P2.54mm_Vertical | X504 |
| 1 | 24M576 EPSON | Crystal-3.2x2.5 | Y101 |
| 2 | BLM21AG601SN1D FER_600R_600MA_0805 Murata Electronics North America | C0805-RES | FER101, FER102 |
| 1 | 61300211121 CON_JUMPER Wurth Electronics Inc. | HDR_01x02 | JP101 |
| 1 | ASFL1-24.000MHZ-EC-T OSC_24M0 Abracon LLC | ASFL1 | OSC401 |
| 1 | B3U-1000P SW_Push Omron Electronics Inc-EMC Div | SW_SPST_B3U-1000P | SW501 |
| 1 | MBR120VLSFT3G DIO_MBR120VLSFT ON Semiconductor | SOD123 | D401 |
| 1 | 45222C IND_2U20_30%_4A5 Murata Power Solutions Inc. | MCSDRH73B | L401 |
| 21 | GRM21BR61E106MA73L CAP_10u0_25V_X5R_0805 Murata Electronics North America | C0805-X7R | C101, C104, C111, C117, C119, C120, C122, C123 +13 |
| 56 | C0805C104K5RACTU CAP_100n_50V_X7R_0805 KEMET | C0805-X7R | C102, C105, C109, C110, C118, C121, C124, C128 +48 |
| 1 | CC0805KRX7R9BB562 CAP_5n60_50V_X7R_0805 Yageo | C0805-X7R | C103 |
| 1 | C0805C151J5GACTU CAP_150p_50V_C0G_0805 KEMET | C0805-X7R | C106 |
| 2 | C0805C220J5GACTU CAP_22p0_50V_C0G_NP0_0805 KEMET | C0805-X7R | C107, C108 |
| 3 | GRM21BR61E106MA73L CAP_100u_20%_25V_ALUM_RADIAL Murata Electronics North America | RD2_D5_L11 | C112, C114, C137 |
| 1 | C0805C104K5RACTU CAP_100u_20%_25V_ALUM_RADIAL KEMET | RD2_D5_L11 | C113 |
| 3 | 860010474012 330u_20%_25V_ALUM_RADIAL Wurth Electronics Inc. | RD3.5_D8_L14 | C115, C116, C126 |
| 1 | CAP_100u_20%_25V_ALUM_RADIAL | RD2_D5_L11 | C138 |
| 6 | ECH-U1H102JX5 CAP_1n00_5%_50V_PPS_0805 Panasonic Electronic Components | C0805-X7R | C201, C210, C225, C226, C267, C268 |
| 8 | ECH-U1H102JX5 CAP_220p_2%_50V_PPS_0805 Panasonic Electronic Components | C0805-X7R | C202, C209, C215, C216, C235, C245, C253, C254 |
| 40 | UVY1E101MDD CAP_100u_20%_25V_ALUM_RADIAL Nichicon | RD2_D5_L11 | C203, C204, C211, C212, C217, C218, C219, C227 +32 |
| 12 | C0805C101J5GACTU CAP_100p_50V_C0G_NP0_0805 KEMET | C0805-X7R | C205, C206, C213, C214, C221, C222, C231, C232 +4 |
| 6 | ECH-U1C562JX5 CAP_220p_2%_50V_PPS_0805 Panasonic Electronic Components | C0805-X7R | C207, C208, C223, C224, C265, C266 |
| 2 | ECH-U1H102JX5 CAP_100p_50V_C0G_NP0_0805 Panasonic Electronic Components | C0805-X7R | C236, C246 |
| 2 | C0805C101J5GACTU CAP_220p_2%_50V_PPS_0805 KEMET | C0805-X7R | C239, C251 |
| 2 | C0805C101J5GACTU CAP_1n00_5%_50V_PPS_0805 KEMET | C0805-X7R | C240, C252 |
| 2 | ECH-U1C562JX5 CAP_100p_50V_C0G_NP0_0805 Panasonic Electronic Components | C0805-X7R | C243, C244 |
| 1 | GRM21BR61E475MA12L CAP_4u70_25V_X5R_0805 Murata Electronics North America | C0805-X7R | C250 |
| 2 | CC0805KRX7R9BB103 CAP_10n0_50V_X7R_0805 Yageo | C0805-X7R | C263, C401 |
| 8 | CAP_100p_50V_C0G_NP0_0805 | C0805-X7R | C281, C282, C283, C284, C285, C286, C287, C288 |
| 16 | ECH-U1H471GX5 CAP_470p_2%_50V_PPS_0805 Panasonic Electronic Components | C0805-X7R | C303, C304, C311, C312, C316, C317, C326, C327 +8 |
| 8 | C0805C270J5GACTU CAP_27p0_50V_C0G_NP0_0805 KEMET | C0805-X7R | C305, C306, C318, C319, C334, C335, C350, C351 |
| 8 | ECH-U1C392JX5 CAP_3n90_5%_16V_PPS_0805 Panasonic Electronic Components | C0805-X7R | C307, C308, C322, C323, C338, C339, C354, C355 |
| 1 | CC0805KKX7R7BB105 CAP_1u00_16V_X7R_0805 Yageo | C0805-X7R | C313 |
| 9 | CAP_100n_50V_X7R_0805 | C0805-X7R | C370, C371, C372, C373, C374, C375, C376, C377 +1 |
| 1 | GRM21BR61A226ME51L CAP_22u0_10V_X5R_0805 Murata Electronics North America | C0805-X7R | C416 |
| 25 | GRM155R71A104KA01D CAP_100n_10V_X7R_0402 Murata Electronics North America | C_0402 | C417, C418, C419, C420, C421, C422, C423, C424 +17 |
| 1 | CAP_22u0_10V_X5R_0805 | C0805-X7R | C504 |
| 2 | CAP_10u0_25V_X5R_0805 | C0805-X7R | C507, C508 |
| 5 | TC164-JR-0733RL 33R0_5%_4x0603 Yageo | R_Array_Convex_4x0603 | R101, R102, R104, R105, R407 |
| 3 | RC0805FR-071KL RES_1K00_1%_0.125W_Thick_0805 Yageo | C0805-RES | R103, R114, R410 |
| 1 | RC0805FR-074K32L RES_4K32_1%_0.125W_Thick_0805 Yageo | C0805-RES | R106 |
| 9 | RC0805FR-0710KL RES_10K0_1%_0.125W_Thick_0805 Yageo | C0805-RES | R107, R112, R113, R401, R405, R406, R413, R414 +1 |
| 1 | RC0805FR-07100RL RES_100R_1%_0.125W_Thick_0805 Yageo | C0805-RES | R108 |
| 8 | RC0805FR-0733RL RES_33R0_1%_0.125W_Thick_0805 Yageo | C0805-RES | R109, R239, R402, R404, R408, R409, R411, R412 |
| 4 | RC0805FR-072KL RES_2K00_1%_0.125W_Thick_0805 Yageo | C0805-RES | R110, R111, R416, R417 |
| 2 | RC0805FR-07100KL RES_100K_1%_0.125W_Thick_0805 Yageo | C0805-RES | R115, R418 |
| 1 | RNCP0805FTD150R RES_560R_1%_0.125W_Thick_0805 Stackpole Electronics Inc. | C0805-RES | R116 |
| 7 | RR1220P-621-D RES_6K80_0.5%_0.125W_Thin_0805 Susumu | C0805-RES | R201, R202, R219, R220, R240, R253, R254 |
| 8 | RR1220P-9760-D-M RES_10K0_1%_0.25W_Thin_0805 Susumu | C0805-RES | R203, R204, R221, R222, R243, R250, R255, R256 |
| 8 | RNCP0805FTD10R0 RES_10R0_1%_0.25W_Thin_0805 Stackpole Electronics Inc. | C0805-RES | R205, R206, R211, R223, R224, R251, R257, R258 |
| 7 | RR1220P-621-D RES_10K0_1%_0.25W_Thin_0805 Susumu | C0805-RES | R207, R208, R229, R230, R241, R259, R260 |
| 7 | RR1220P-9760-D-M RES_6K80_0.5%_0.125W_Thin_0805 Susumu | C0805-RES | R209, R210, R231, R232, R249, R261, R262 |
| 6 | RNCP0805FTD10R0 RES_2K20_0.5%_0.125W_Thin_0805 Stackpole Electronics Inc. | C0805-RES | R212, R233, R234, R245, R263, R264 |
| 8 | RC0805FR-0720RL RES_20R0_1%_0.125W_Thick_0805 Yageo | C0805-RES | R218, R228, R238, R246, R323, R334, R349, R356 |
| 1 | RR1220P-9760-D-M RES_10R0_1%_0.25W_Thin_0805 Susumu | C0805-RES | R242 |
| 1 | RNCP0805FTD10R0 RES_6K80_0.5%_0.125W_Thin_0805 Stackpole Electronics Inc. | C0805-RES | R244 |
| 1 | RR1220P-621-D RES_2K20_0.5%_0.125W_Thin_0805 Susumu | C0805-RES | R247 |
| 1 | RR1220P-621-D RES_10R0_1%_0.25W_Thin_0805 Susumu | C0805-RES | R248 |
| 1 | RNCP0805FTD10R0 RES_10K0_1%_0.25W_Thin_0805 Stackpole Electronics Inc. | C0805-RES | R252 |
| 9 | RES_2K20_0.5%_0.125W_Thin_0805 | C0805-RES | R265, R266, R267, R269, R271, R274, R275, R277 +1 |
| 6 | RES_10R0_1%_0.25W_Thin_0805 | C0805-RES | R268, R270, R272, R276, R278, R280 |
| 1 | RES_6K80_0.5%_0.125W_Thin_0805 | C0805-RES | R273 |
| 16 | RR1220P-4421-D-M RES_4K42_0.5%_0.1W_Thin_0805 Susumu | C0805-RES | R301, R303, R311, R313, R317, R319, R328, R330 +8 |
| 16 | RR1220P-3401-D-M RES_3K40_0.5%_0.1W_Thin_0805 Susumu | C0805-RES | R302, R304, R315, R316, R318, R320, R332, R333 +8 |
| 16 | RNCP0805FTD150R RES_150R_1%_0.25W_Thin_0805 Stackpole Electronics Inc. | C0805-RES | R305, R306, R312, R314, R321, R322, R329, R331 +8 |
| 16 | RT0805FRE074K7L RES_4K70_1%_0.125W_Thin_0805 Yageo | C0805-RES | R307, R308, R309, R310, R324, R325, R326, R327 +8 |
| 16 | RES_100K_1%_0.125W_Thick_0805 | C0805-RES | R374, R375, R376, R377, R378, R379, R380, R381 +8 |
| 1 | RC0805FR-074R7L RES_4R70_1%_0.125W_Thick_0805 Yageo | C0805-RES | R403 |
| 1 | ERJ-6ENF43R2V RES_43R2_1%_0.125W_Thick_0805 Panasonic Electronic Components | C0805-RES | R415 |
| 1 | RC0805FR-0780K6L RES_80K6_1%_0.125W_Thick_0805 Yageo | C0805-RES | R419 |
| 1 | RC0805FR-07120KL RES_120K_1%_0.125W_Thick_0805 Yageo | C0805-RES | R420 |
| 1 | RES_10K0_1%_0.125W_Thick_0805 | C0805-RES | R421 |
FreeDSP-aurora design files
The KiCad project lives in the freeDSP/freeDSP-aurora repository on GitHub; these links point at the commit this page was built from.
FreeDSP-aurora: common questions
What microcontroller does the FreeDSP-aurora use?
The FreeDSP-aurora is built around the ESP32-WROOM-32U, from the ESP32 family.
How big is the FreeDSP-aurora PCB?
The FreeDSP-aurora measures 110 × 110 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the FreeDSP-aurora?
502 components, from 104 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 FreeDSP-aurora design files?
From the freeDSP/freeDSP-aurora repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the FreeDSP-aurora design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which freeDSP chose for the repository.
Can I test firmware for the FreeDSP-aurora 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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