Boards
About the Boards PCB
Boards is an open source NXP PCB design by hallmar, published on GitHub. It is a 2-layer board measuring 40.1 × 109.7 mm, with 91 components from 35 distinct parts.
Its main chip is the TEENSY3.2_BAREBONES, from the NXP family. Other key parts include the 7805DT, 74AUC1G17DBV, OPA134, LM4040B10 and MCP6004_SMD. By type, the board carries 37 resistors, 19 capacitors, 7 ICs, 5 diodes, 3 switches and 3 test points.
It belongs with the audio designs in this gallery.
Main components on the Boards
Boards bill of materials (BOM)
91 components, 35 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 7805DT | TO252 | IC1 |
| 1 | 74AUC1G17DBV | SOT23-5 | IC2 |
| 1 | OPA134 | SO08 | IC3 |
| 1 | LM4040B10 | DBZ_R-PDSO-G3 | IC6 |
| 1 | MCP6004_SMD | SO14 | U1 |
| 1 | — | TEENSY3.2_BAREBONES | U3 |
| 1 | CS4334 | SOIC127P600X175-8N | U4 |
| 1 | 2510- | PAK100_2500-10 | X1 |
| 4 | — | @HOLE0, @HOLE1, @HOLE2, @HOLE3 | |
| 1 | 6N138 | DIL08 | OK1 |
| 3 | — | B3F-10XX | S1, S2, S3 |
| 3 | — | MA08-1 | SV2, SV3, SV4 |
| 3 | — | FE08 | SV5, SV6, SV7 |
| 2 | BC847 | SOT23 | T1, T2 |
| 3 | — | 2,54_1,0 | TP1, TP2, TP3 |
| 3 | 1n4148 | SOD-123 | D1, D2, D3 |
| 2 | STPS1L30U | SMB | D10, D11 |
| 3 | BLM21PG221SN1D | L2012C | L1, L2, L3 |
| 8 | 100n | C1206 | C1, C2, C4, C5, C8, C9, C12, C15 |
| 1 | 3.3n | C1206 | C3 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 100µ | 153CLV-0505 | C6, C7, C13, C14 |
| 2 | 3.3µ | 153CLV-0405 | C10, C11 |
| 4 | 1n | C1206 | C16, C17, C18, C19 |
| 2 | 470 | M1206 | R1, R17 |
| 1 | 267k | M1206 | R2 |
| 1 | 330k | M1206 | R3 |
| 6 | 1k | M1206 | R4, R5, R7, R9, R24, R27 |
| 6 | 10k | M1206 | R6, R8, R18, R20, R23, R29 |
| 7 | 220 | M1206 | R10, R11, R12, R13, R15, R16, R26 |
| 1 | 560 | M1206 | R14 |
| 1 | 330 | M1206 | R19 |
| 2 | 47 | M1206 | R21, R22 |
| 4 | 200k | M1206 | R25, R31, R34, R37 |
| 4 | 66.5k | M1206 | R28, R32, R35, R36 |
| 2 | 100k | M1206 | R30, R33 |
Boards design files
The KiCad project lives in the hallmar/Eurorack-Modules repository on GitHub; these links point at the commit this page was built from.
Boards: common questions
What microcontroller does the Boards use?
The Boards is built around the TEENSY3.2_BAREBONES, from the NXP family.
How big is the Boards PCB?
The Boards measures 40.1 × 109.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Boards?
91 components, from 35 distinct parts. The full bill of materials is listed on this page.
Where can I download the Boards design files?
From the hallmar/Eurorack-Modules repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Boards design in my own project?
The repository has no license, so all rights stay with hallmar. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Boards without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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