2 layers405.8 × 127.3 mm
2 layers96 × 39.8 mm
At90USB1286 prototype
MacroLens/custom-keyboard1A custom mechanical keyboard I am making from scratch. The PCB will have functionality for Bluetooth LE, and USB-C outputs. Based on the AVR micro-controller family.
- Size
- 96 × 39.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 47
- Nets
- 104
- Pads
- 271
- Tracks, vias
- 528, 69
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 1 Sep 2019
- Updated
- 13 Feb 2020
Overview
At90USB1286 prototype is an open-source printed circuit board by MacroLens, from the MacroLens/custom-keyboard repository on GitHub. It is a 2-layer board of 96 × 39.8 mm with 47 parts on 104 nets, routed with 528 tracks and 69 vias.
It is built around the AT90USB1286-AU. Its parts include 15 capacitors, 12 resistors, 8 diodes, 5 switches and 3 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdcustom-keyboard
A custom mechanical keyboard I am making from scratch. The PCB will have functionality for Bluetooth LE, an LED matrix and USB-C outputs. Based on the AVR micro-controller family.
Thanks to PCBWAY for sending me some prototypes!
Parts
47| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4, C5, C6, C7, C9, C11, C13 |
| 6 | 20K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7, R8, R9, R10, R11, R12 |
| 5 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C8, C10, C12, C14, C15 |
| 4 | D | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2, D3, D4 |
| 4 | KEYSW | MX_Only:MXOnly-1U-Hotswap | K1, K2, K3, K4 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5, R6 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4 |
| 1 | 1A | MX_Only:MXOnly-LEDONLY | LED1 |
| 1 | 1B | MX_Only:MXOnly-LEDONLY | LED3 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C3 |
| 1 | 2A | MX_Only:MXOnly-LEDONLY | LED2 |
| 1 | 2B | MX_Only:MXOnly-LEDONLY | LED4 |
| 1 | 500ma | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F1 |
| 1 | AT90USB1286-AU | Package_QFP:TQFP-64_14x14mm_P0.8mm | U1 |
| 1 | Conn_01x02 | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | J3 |
| 1 | Conn_01x09 | Connector_PinHeader_1.27mm:PinHeader_1x09_P1.27mm_Vertical | J2 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_SeikoEpson_FA238V-4Pin_3.2x2.5mm | Y1 |
| 1 | IS31FL3733-QF | Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.2x4.2mm | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_TL3342 | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_Amphenol_12401610E4-2A | J1 |
Questions
How big is the At90USB1286 prototype PCB?
It measures 96 × 39.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the At90USB1286 prototype use?
47 parts, built around the AT90USB1286-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 At90USB1286 prototype KiCad files?
From the MacroLens/custom-keyboard repository on GitHub, at the commit this page was made from: the board is KiCad_Files/at90usb1286_prototype/at90USB1286_prototype/at90USB1286_prototype.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the At90USB1286 prototype design in my own project?
Its repository states no licence, so its author keeps all rights: ask MacroLens before reusing the design.
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