2 layers243.9 × 136.5 mm
Barobord
sadekbaroudi/barobord
I have spent a lot of time and money designing prototypes, testing, developing, etc. Any contributions would be greatly appreciated!
157 parts57
2 layers297.2 × 105.4 mm
Coalesce
kyleterry/keyboards- Size
- 297.2 × 105.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 127
- Nets
- 93
- Pads
- 886
- Tracks, vias
- 53, 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 24 May 2019
- Updated
- 5 Oct 2020
Overview
Coalesce is an open-source printed circuit board by kyleterry, from the kyleterry/keyboards repository on GitHub. It is a 2-layer board of 297.2 × 105.4 mm with 127 parts on 93 nets, routed with 53 tracks and 2 vias.
It is built around the ATMEGA32U4-AU and PRTR5V0U2X. Its parts include 52 switches, 51 diodes, 7 capacitors, 7 connectors and 6 resistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
PRTR5V0U2X
SOT-143-55℃~+125℃ 0.3pF、0.8pF 100W 10V、15V 5V 6.5V 6A 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
Parts
127| Qty | Value | Footprint | References |
|---|---|---|---|
| 51 | D | keyboard-components:D_SOD123_axial | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +35 |
| 4 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C3, C4, C5 |
| 2 | +5v | Connectors:1X01_NO_SILK | J4, J5 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C6, C7 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 2 | GND | Connectors:1X01_NO_SILK | J6, J7 |
| 1 | / | keyboard-components:Mx-Alps-1U | K41 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6 |
| 1 | 16MHz | Crystal:Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1 |
| 1 | 500m | Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 1 | A | keyboard-components:Mx-Alps-1U | K16 |
| 1 | ALT | keyboard-components:Mx-Alps-1U | K21 |
| 1 | ATmega32U4-AU | keebio_keyboard_parts:TQFP-44_10x10mm_Pitch0.8mm | U2 |
| 1 | B | keyboard-components:Mx-Alps-1U | K34 |
| 1 | BSPC | keyboard-components:Mx-Alps-1U | K14 |
| 1 | C | keyboard-components:Mx-Alps-1U | K32 |
| 1 | COMMA | keyboard-components:Mx-Alps-1U | K39 |
| 1 | CTRL | keyboard-components:Mx-Alps-1U | K7 |
| 1 | D | keyboard-components:Mx-Alps-1U | K18 |
| 1 | E | keyboard-components:Mx-Alps-1U | K4 |
| 1 | ENT | keyboard-components:Mx-Alps-1U | K50 |
| 1 | ESC | keyboard-components:Mx-Alps-1U | K15 |
| 1 | Encoder | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | K47 |
| 1 | F | keyboard-components:Mx-Alps-1U | K19 |
| 1 | FN1 | keyboard-components:Mx-Alps-1U | K35 |
| 1 | FN2 | keyboard-components:Mx-Alps-1U | K22 |
| 1 | G | keyboard-components:Mx-Alps-1U | K20 |
| 1 | GUI | keyboard-components:Mx-Alps-1U | K44 |
| 1 | GUI- | keyboard-components:Mx-Alps-1U | K36 |
| 1 | H | keyboard-components:Mx-Alps-1U | K23 |
| 1 | I | keyboard-components:Mx-Alps-1U | K11 |
| 1 | I2C | Connectors:1X04_NO_SILK | J3 |
| 1 | J | keyboard-components:Mx-Alps-1U | K24 |
| 1 | K | keyboard-components:Mx-Alps-1U | K25 |
| 1 | L | keyboard-components:Mx-Alps-1U | K26 |
| 1 | LOWER | keyboard-components:Mx-Alps-vertical-175U | K46 |
| 1 | LPALM | keyboard-components:Mx-Alps-1U | K43 |
| 1 | LSPACE | keyboard-components:Mx-Alps-vertical-125U | K45 |
| 1 | M | keyboard-components:Mx-Alps-1U | K38 |
| 1 | N | keyboard-components:Mx-Alps-1U | K37 |
| 1 | O | keyboard-components:Mx-Alps-1U | K12 |
| 1 | P | keyboard-components:Mx-Alps-1U | K13 |
| 1 | PERIOD | keyboard-components:Mx-Alps-1U | K40 |
| 1 | PRTR5V0U2X | keebio_keyboard_parts:SOT-143B | U1 |
| 1 | Q | keyboard-components:Mx-Alps-1U | K2 |
| 1 | QUOT | keyboard-components:Mx-Alps-1U | K28 |
| 1 | R | keyboard-components:Mx-Alps-1U | K5 |
| 1 | RAISE | keyboard-components:Mx-Alps-vertical-175U | K48 |
| 1 | RPALM | keyboard-components:Mx-Alps-1U | K51 |
| 1 | RSHFT | keyboard-components:Mx-Alps-1U | K42 |
| 1 | RSPACE | keyboard-components:Mx-Alps-vertical-125U | K49 |
| 1 | S | keyboard-components:Mx-Alps-1U | K17 |
| 1 | SEMI | keyboard-components:Mx-Alps-1U | K27 |
| 1 | SHFT | keyboard-components:Mx-Alps-1U | K29 |
| 1 | T | keyboard-components:Mx-Alps-1U | K6 |
| 1 | TAB | keyboard-components:Mx-Alps-1U | K1 |
| 1 | TAPD | keyboard-components:Mx-Alps-1U | K8 |
| 1 | U | keyboard-components:Mx-Alps-1U | K10 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | V | keyboard-components:Mx-Alps-1U | K33 |
| 1 | W | keyboard-components:Mx-Alps-1U | K3 |
| 1 | X | keyboard-components:Mx-Alps-1U | K31 |
| 1 | Y | keyboard-components:Mx-Alps-1U | K9 |
| 1 | Z | keyboard-components:Mx-Alps-1U | K30 |
| 1 | extra io | Connectors:1X05_NO_SILK | J2 |
| 1 | reset | sparkfun_switches:TACTILE_SWITCH_SMD_4.6X2.8MM | SW1 |
Questions
How big is the Coalesce PCB?
It measures 297.2 × 105.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Coalesce use?
127 parts, built around the ATMEGA32U4-AU and PRTR5V0U2X. 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 Coalesce KiCad files?
From the kyleterry/keyboards repository on GitHub, at the commit this page was made from: the board is pcbs/coalesce.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Coalesce design in my own project?
Its repository states no licence, so its author keeps all rights: ask kyleterry before reusing the design.
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