Nodu
About the Nodu PCB
Nodu is an open source AVR/Arduino PCB design by swiftrax, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 285 × 94.6 mm, with 128 components from 88 distinct parts.
Its main chip is the ATmega32U4-AU, from the AVR/Arduino family. By type, the board carries 73 LEDs, 32 diodes, 6 resistors, 5 capacitors, 1 IC and 1 crystal.
It belongs with the keyboards designs in this gallery.
From the project
Universal sixty-percent mechanical keyboard with flex cutouts and minimal layouts. QMK / VIA supported
This repository is under the CC0 1.0 Universal License. If you plan to sell these pcbs, make sure to read it.
Main components on the Nodu
Nodu bill of materials (BOM)
128 components, 88 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATmega32U4-AU | ATMEGA32U4_Annotated | U1 |
| 1 | 16MHz | Resonator_3Pin_Annotated | Y1 |
| 1 | PRTR5V0U2X | SOT-143 | ESD1 |
| 1 | 500mA | Fuse_1206_Annotated | F1 |
| 1 | M2 Slot | Flex_M2_Left | H1 |
| 1 | M2 Slot | Flex_M2_Right | H2 |
| 4 | M2 Screw | Flex_M2_Hole | H3, H4, H5, H6 |
| 1 | RESET | RESET_PADS | SW1 |
| 1 | HRO-TYPE-C-31-M-12 | HRO-TYPE-C-31-M-12 | USB1 |
| 1 | KC_ESC | MXOnly-1U-NoLED | K_0 |
| 1 | KC_1 | MXOnly-1U-NoLED | K_1 |
| 1 | KC_2 | MXOnly-1U-NoLED | K_2 |
| 1 | KC_3 | MXOnly-1U-NoLED | K_3 |
| 1 | KC_4 | MXOnly-1U-NoLED | K_4 |
| 1 | KC_5 | MXOnly-1U-NoLED | K_5 |
| 1 | KC_6 | MXOnly-1U-NoLED | K_6 |
| 1 | KC_7 | MXOnly-1U-NoLED | K_7 |
| 1 | KC_8 | MXOnly-1U-NoLED | K_8 |
| 1 | KC_9 | MXOnly-1U-NoLED | K_9 |
| 1 | KC_0 | MXOnly-1U-NoLED | K_10 |
Show 68 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | KC_MINS | MXOnly-1U-NoLED | K_11 |
| 1 | KC_EQL | MXOnly-1U-NoLED | K_12 |
| 1 | KC_BSPC | MXOnly-2U-NoLED | K_13 |
| 1 | KC_BSPC | MXOnly-1U-NoLED | K_013A1 |
| 1 | KC_TAB | MXOnly-1.5U-NoLED | K_100 |
| 1 | KC_Q | MXOnly-1U-NoLED | K_101 |
| 1 | KC_W | MXOnly-1U-NoLED | K_102 |
| 1 | KC_E | MXOnly-1U-NoLED | K_103 |
| 1 | KC_R | MXOnly-1U-NoLED | K_104 |
| 1 | KC_T | MXOnly-1U-NoLED | K_105 |
| 1 | KC_Y | MXOnly-1U-NoLED | K_106 |
| 1 | KC_U | MXOnly-1U-NoLED | K_107 |
| 1 | KC_I | MXOnly-1U-NoLED | K_108 |
| 1 | KC_O | MXOnly-1U-NoLED | K_109 |
| 1 | KC_P | MXOnly-1U-NoLED | K_110 |
| 1 | KC_LBRC | MXOnly-1U-NoLED | K_111 |
| 1 | KC_RBRC | MXOnly-1U-NoLED | K_112 |
| 1 | KC_BSLS | MXOnly-1.5U-NoLED | K_113 |
| 1 | KC_CAPS | MXOnly-1.75U-NoLED | K_200 |
| 1 | KC_CAPS | MXOnly-1.25U-NoLED | K_200A1 |
| 1 | KC_A | MXOnly-1U-NoLED | K_201 |
| 1 | KC_S | MXOnly-1U-NoLED | K_202 |
| 1 | KC_D | MXOnly-1U-NoLED | K_203 |
| 1 | KC_F | MXOnly-1U-NoLED | K_204 |
| 1 | KC_G | MXOnly-1U-NoLED | K_205 |
| 1 | KC_H | MXOnly-1U-NoLED | K_206 |
| 1 | KC_J | MXOnly-1U-NoLED | K_207 |
| 1 | KC_K | MXOnly-1U-NoLED | K_208 |
| 1 | KC_L | MXOnly-1U-NoLED | K_209 |
| 1 | KC_SCLN | MXOnly-1U-NoLED | K_210 |
| 1 | KC_QUOT | MXOnly-1U-NoLED | K_211 |
| 1 | KC_ENT | MXOnly-2.25U-NoLED | K_212 |
| 1 | KC_DEL | MXOnly-1U-NoLED | K_213 |
| 1 | KC_LSFT | MXOnly-2.25U-NoLED | K_300 |
| 1 | KC_Z | MXOnly-1U-NoLED | K_301 |
| 1 | KC_X | MXOnly-1U-NoLED | K_302 |
| 1 | KC_C | MXOnly-1U-NoLED | K_303 |
| 1 | KC_V | MXOnly-1U-NoLED | K_304 |
| 1 | KC_B | MXOnly-1U-NoLED | K_305 |
| 1 | KC_N | MXOnly-1U-NoLED | K_306 |
| 1 | KC_M | MXOnly-1U-NoLED | K_307 |
| 1 | KC_COMM | MXOnly-1U-NoLED | K_308 |
| 1 | KC_DOT | MXOnly-1U-NoLED | K_309 |
| 1 | KC_SLSH | MXOnly-1U-NoLED | K_310 |
| 1 | KC_RSFT | MXOnly-2.75U-NoLED | K_311 |
| 1 | KC_RSFT | MXOnly-1.75U-NoLED | K_311A1 |
| 2 | KC_MO(1) | MXOnly-1U-NoLED | K_312, K_410A1 |
| 1 | KC_LCTL | MXOnly-1.25U-NoLED | K_400 |
| 1 | KC_LCTL | MXOnly-1.5U-NoLED | K_400A1 |
| 1 | KC_LGUI | MXOnly-1.25U-NoLED | K_401 |
| 1 | KC_LGUI | MXOnly-1U-NoLED | K_401A1 |
| 1 | KC_LALT | MXOnly-1.25U-NoLED | K_402 |
| 1 | KC_LALT | MXOnly-1.5U-NoLED | K_402A1 |
| 1 | KC_SPC | MXOnly-6.25U-ReversedStabilizers-NoLED | K_406 |
| 1 | KC_SPC | MXOnly-7U-ReversedStabilizers-NoLED | K_406A1 |
| 1 | KC_RALT | MXOnly-1.25U-NoLED | K_408 |
| 1 | KC_RGUI | MXOnly-1.25U-NoLED | K_409 |
| 1 | KC_RALT | MXOnly-1.5U-NoLED | K_409A1 |
| 1 | KC_MO(1) | MXOnly-1.25U-NoLED | K_410 |
| 1 | KC_RCTL | MXOnly-1.25U-NoLED | K_411 |
| 1 | KC_RCTL | MXOnly-1.5U-NoLED | K_411A1 |
| 32 | BAV70 | SOT-23_Annotated | D1, D2, D3, D4, D5, D6, D7, D8 +24 |
| 1 | 10µF | C_0603_Annotated | C1 |
| 3 | 100nF | C_0603_Annotated | C2, C3, C4 |
| 1 | 1µF | C_0603_Annotated | C5 |
| 2 | 10kΩ | R_0603_Annotated | R1, R2 |
| 2 | 22Ω | R_0603_Annotated | R3, R4 |
| 2 | 5.1kΩ | R_0603_Annotated | R5, R6 |
Nodu design files
The KiCad project lives in the swiftrax/Nodu repository on GitHub; these links point at the commit this page was built from.
- LayoutNodu/Nodu.kicad_pcb
Nodu: common questions
What microcontroller does the Nodu use?
The Nodu is built around the ATmega32U4-AU, from the AVR/Arduino family.
How big is the Nodu PCB?
The Nodu measures 285 × 94.6 mm, has 2 copper layers and is 1.2 mm thick.
How many components are on the Nodu?
128 components, from 88 distinct parts. The full bill of materials is listed on this page.
Where can I download the Nodu design files?
From the swiftrax/Nodu repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Nodu design in my own project?
Yes, under the terms of its CC0-1.0 license, which swiftrax chose for the repository.
Can I test firmware for the Nodu without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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