AddOnC
About the AddOnC PCB
AddOnC is an open source PCB design by freeDSP, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 380 × 45 mm, with 97 components from 52 distinct parts.
Other key parts include the 25AA1024T-I/SM. By type, the board carries 49 resistors, 22 crystals, 21 capacitors, 2 transformers, 1 IC and 1 inductor.
It belongs with the iot & wireless and audio 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
- 1x XLR Analog in - 1x RCA Analog in - 1x TOSlink in (for S/P-DIF via glassfiber) - 1x RCA Digital in (for S/P-DIF via coaxial cable) - 1x RCA Digital out (connect a subwoofer) - 1x XLR Analog Out (connect a subwoofer) - 1x USB - Volume potentiometer
Schematics and backplates v1.0.0 Schematics and backplates
Pre-amp / 7.1-management without limits.
- 8x XLR Analog Out, unbalanced (RCA) is possible too - 8x RCA Analog In - 8x XLR Analog In - 4x RCA Digital In (for S/P-DIF via Cinch) - 4x TOSlink Digital In ((for S/P-DIF via LWL) - 1x USB in
Main components on the AddOnC
AddOnC bill of materials (BOM)
97 components, 52 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 25AA1024T-I/SM AK4118AEQ Microchip Technology | LQFP-48_7x7mm_P0.5mm | IC102 |
| 1 | MicroMatch14 | MM-14G | X5 |
| 1 | HDR_02x08 | IDC2x8_Pitch2.54mm | X6 |
| 1 | 1-215079-4 XLR3 TE Connectivity AMP Connectors | NC3MAH | X101 |
| 1 | PRPC008DAAN-RC XLR3 Sullins Connector Solutions | NC3MAH | X102 |
| 1 | PRPC003SAAN-RC XLR3 Sullins Connector Solutions | NC3MAH | X103 |
| 1 | 1-215079-0 XLR3 TE Connectivity AMP Connectors | NC3MAH | X104 |
| 1 | 0430450428 XLR3 Molex, LLC | NC3MAH | X105 |
| 3 | XLR3 | NC3MAH | X106, X107, X108 |
| 5 | XLR3 | NC3FAH | X109, X116, X117, X118, X119 |
| 1 | PLR135_T10 | PLR135_T10 | X110 |
| 1 | USB_B | USB_B | X111 |
| 1 | HDR_01x05 | PinHeader_1x05_P2.54mm_Vertical | X112 |
| 2 | CON_IDC26 | IDC26 | X114, X115 |
| 1 | NC3MAH | NC3MAH | X120 |
| 1 | PLT133_T10W | PLT133_T10W | X121 |
| 1 | Montagewinkel | Montagewinkel | B1 |
| 2 | DA102 | DA102MC | T101, T102 |
| 1 | 47u0 | C0805-X7R | L101 |
| 2 | GRM21BR61E106MA73L CAP_100p_50V_C0G_NP0_0805 Murata Electronics North America | C0805-X7R | C101, C104 |
Show 32 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C0805C104K5RACTU CAP_100p_50V_C0G_NP0_0805 KEMET | C0805-X7R | C102, C105 |
| 1 | CC0805KRX7R9BB562 CAP_100p_50V_C0G_NP0_0805 Yageo | C0805-X7R | C103 |
| 1 | C0805C151J5GACTU CAP_100p_50V_C0G_NP0_0805 KEMET | C0805-X7R | C106 |
| 2 | C0805C220J5GACTU CAP_100p_50V_C0G_NP0_0805 KEMET | C0805-X7R | C107, C108 |
| 1 | C0805C104K5RACTU CAP_100n_50V_X7R_0805 KEMET | C0805-X7R | C109 |
| 1 | GRM21BR61E106MA73L 470n Murata Electronics North America | C0805-X7R | C114 |
| 2 | 860010474012 100n Wurth Electronics Inc. | C0805-X7R | C115, C116 |
| 4 | GRM21BR61E106MA73L 100n Murata Electronics North America | C0805-X7R | C117, C119, C123, C125 |
| 1 | C0805C104K5RACTU 10u0 KEMET | C0805-X7R | C118 |
| 2 | GRM21BR61E106MA73L 10u0 Murata Electronics North America | C0805-X7R | C120, C122 |
| 2 | C0805C104K5RACTU 100n KEMET | C0805-X7R | C121, C124 |
| 2 | RES_10K0_1%_0.125W_Thick_0805 | C0805-RES | R25, R144 |
| 4 | TC164-JR-0733RL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R101, R102, R104, R105 |
| 2 | RC0805FR-071KL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R103, R114 |
| 1 | RC0805FR-074K32L RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R106 |
| 3 | RC0805FR-0710KL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R107, R112, R113 |
| 1 | RC0805FR-07100RL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R108 |
| 1 | RC0805FR-0733RL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R109 |
| 2 | RC0805FR-072KL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R110, R111 |
| 1 | RC0805FR-07100KL RES_68R0_1%_0.125W_Thin_0805 Yageo | C0805-RES | R115 |
| 1 | RNCP0805FTD150R RES_68R0_1%_0.125W_Thin_0805 Stackpole Electronics Inc. | C0805-RES | R116 |
| 1 | RC0805FR-07931RL RES_100R_1%_0.25W_Thin_0805 Yageo | C0805-RES | R117 |
| 8 | RES_100K_1%_0.125W_Thick_0805 | C0805-RES | R118, R120, R122, R124, R126, R128, R130, R132 |
| 7 | RES_100R_1%_0.25W_Thin_0805 | C0805-RES | R119, R121, R123, R125, R127, R129, R131 |
| 2 | RES_DNP | C0805-RES | R133, R134 |
| 4 | 33R0 | C0805-RES | R135, R136, R137, R147 |
| 4 | RES_0R00_1%_0.125W_Thick_0805 | C0805-RES | R138, R143, R145, R146 |
| 1 | 10K0 | C0805-RES | R139 |
| 1 | 110R | C0805-RES | R140 |
| 1 | 240R | C0805-RES | R141 |
| 1 | 150R | C0805-RES | R142 |
| 1 | 470R | C0805-RES | R148 |
AddOnC 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.
AddOnC: common questions
How big is the AddOnC PCB?
The AddOnC measures 380 × 45 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AddOnC?
97 components, from 52 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 AddOnC 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 AddOnC design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which freeDSP chose for the repository.
More boards in freeDSP-aurora
Similar boards
OtterCastAudioV2
Ottercast
50 × 49.3 mm216 parts4LMIT665
ESP32
Chrismettal
66.4 × 48.1 mm20 parts2LCC-BY-SA-4.0446
Connecting piece
66.4 × 24.5 mm20 parts2LCC-BY-SA-4.0446
ESP32
66.4 × 48.1 mm7 parts2LCC-BY-SA-4.0446
ESP32
66.4 × 48.1 mm20 parts2LCC-BY-SA-4.0446
EEZ DIB B3C
eez-open
110 × 90 mm30 parts2LTAPR-OHL-1.0391