2 layers99.1 × 99.1 mm
Power supply panelized
thebiguno/microcontroller-projects
A home for a bunch of microcontroller projects which don't warrant their own repos.
223 parts75
2 layers20.3 × 41.9 mm
Ubbb 32u4
thebiguno/microcontroller-projects75A home for a bunch of microcontroller projects which don't warrant their own repos.
- Size
- 20.3 × 41.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 41
- Pads
- 145
- Tracks, vias
- 502, 53
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 20 Nov 2014
- Updated
- 6 Jul 2024
Overview
Ubbb 32u4 is an open-source printed circuit board by thebiguno, from the thebiguno/microcontroller-projects repository on GitHub. It is a 2-layer board of 20.3 × 41.9 mm with 37 parts on 41 nets, routed with 502 tracks and 53 vias.
It is built around the ATMEGA32U4-AU. Its parts include 9 capacitors, 8 resistors, 8 connectors, 3 switches and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdmicrocontroller-projects
A home for my microcontroller projects, including Stubby the Hexapod and others. It includes libraries for avr-gcc along with sample programs on how to use them, some KiCad modules, and the source code for a number of projects.
Some major projects include:
- Stubby the Hexapod (http://stubby.digitalcave.ca/stubby/) (Now extracted into its own repo at https://github.com/thebiguno/stubby)
- DrumMaster (http://drummaster.digitalcave.ca/drummaster/)
- Chiindii (http://chiindii.digitalcave.ca/chiindii/)
Some of the AVR libraries included here are:
- serial communications
- TWI (I2C), with support for master read / master write / slave read / slave write, plus callback functions for asyncronous communications
- reading data from a PS2 controller
- timer functions
- and much more
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0.1uF | SM0603_VALUE | C3, C5, C6, C7, C8, C9 |
| 6 | CONN_5 | PIN_ARRAY_5x1 | P2, P3, P4, P5, P6, P7 |
| 5 | 1k | SM0603_VALUE | R3, R4, R5, R6, R7 |
| 2 | 22 | SM0603_VALUE | R1, R2 |
| 2 | 8pF | SM0603_VALUE | C1, C2 |
| 2 | SW_PUSH_SMALL | SW_6x3 | SW1, SW2 |
| 1 | 0 | SM0603_VALUE | R8 |
| 1 | 1uF | SM0603_VALUE | C4 |
| 1 | ATMEGA32U4-A | TQFP44 | U1 |
| 1 | CRYSTAL_SMD_4PIN | CRYSTAL_SMD_2.5x2 | X1 |
| 1 | DIGITALCAVE_AUTHOR | DIGITALCAVE_AUTHOR | VAL |
| 1 | ISP | ISP_EDGE | P1 |
| 1 | MOUNTING_HOLE | MOUNTING_HOLE_#4 | MP1 |
| 1 | PINS_4 | PIN_ARRAY_4x1 | K1 |
| 1 | REF | DIGITALCAVE_LOGO | VAL |
| 1 | RGB_LED_COMMON_ANODE_ALT1 | LED_RGB_4-PLCC_ALT1 | D1 |
| 1 | TVS | SOT23 | D2 |
| 1 | USB-MINI-B | USB_MINI_B_fixed | CON1 |
| 1 | VAL** | DIGITALCAVE_URL | DIGITALCAVE_URL |
| 1 | VAL** | WJ10 | WJ10 |
Questions
How big is the Ubbb 32u4 PCB?
It measures 20.3 × 41.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ubbb 32u4 use?
37 parts, built around the ATMEGA32U4-AU. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Ubbb 32u4 KiCad files?
From the thebiguno/microcontroller-projects repository on GitHub, at the commit this page was made from: the board is projects/ubbb32_u4/kicad/ubbb_32u4.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ubbb 32u4 design in my own project?
Its repository states no licence, so its author keeps all rights: ask thebiguno before reusing the design.
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