2 layers89 × 100 mm
Hub16
joshajohnson/Hub16
A macro pad with 16 keys, two rotary encoders, a four port USB hub, and plenty of LEDs!
132 parts388
2 layers17.8 × 33 mm
Comet
vattern/comet6Comet USB C pro-micro drop in
- Size
- 17.8 × 33 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 41
- Pads
- 161
- Tracks, vias
- 571, 80
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 9 Mar 2021
- Updated
- 9 Mar 2021
Overview
Comet is an open-source printed circuit board by vattern, from the vattern/comet repository on GitHub. It is a 2-layer board of 17.8 × 33 mm with 25 parts on 41 nets, routed with 571 tracks and 80 vias.
It is built around the ATMEGA32U4. Its parts include 10 capacitors, 6 resistors, 5 connectors, 1 IC and 1 diode. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdcomet
Comet USB C pro-micro drop in
Based on the Goldfish by Dr Derivative.
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0u1 | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C10 |
| 2 | 01x12 | pins:Pins12 | J3, J4 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R6 |
| 2 | 22 | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 22p | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 01x02 | pins:Pins2 | J2 |
| 1 | 01x05 | pins:Pins5 | J5 |
| 1 | 16MHz | Crystal:Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm | X1 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 4u7 | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | ATmega32U4 | Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm | U1 |
| 1 | D_Schottky | Diode_SMD:D_PowerDI-123 | D1 |
| 1 | LOGO | fish:comet | G*** |
| 1 | USB-C | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
Questions
How big is the Comet PCB?
It measures 17.8 × 33 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Comet use?
25 parts, built around the ATMEGA32U4. 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 Comet KiCad files?
From the vattern/comet repository on GitHub, at the commit this page was made from: the board is comet.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Comet design in my own project?
Its repository states no licence, so its author keeps all rights: ask vattern before reusing the design.
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