Checkpoint
About the Checkpoint PCB
Checkpoint is an open source AVR/Arduino PCB design by kitsunekeyboards, published on GitHub under the MIT license. It is a 2-layer board measuring 285 × 95.1 mm, with 123 components from 66 distinct parts.
Its main chip is the ATMEGA32U4, from the AVR/Arduino family. Other key parts include the PRTR5V0U2X. By type, the board carries 48 switches, 48 diodes, 7 resistors, 5 capacitors, 4 connectors and 3 jumpers.
It belongs with the keyboards designs in this gallery.
From the project
Home of the Shapeshifter 4060 keyboard
Main components on the Checkpoint
Checkpoint bill of materials (BOM)
123 components, 66 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATMEGA32U4 | TQFP-44_10x10mm_P0.8mm | IC1 |
| 1 | PRTR5V0U2X | SOT-143_With_Adhesive | U6 |
| 1 | 8MHz | RESONATOR-SMD | Y1 |
| 1 | HRO-TYPE-C-31-M-12 | HRO-TYPE-C-31-M-12 | J1 |
| 1 | Conn_01x04 | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2 |
| 2 | Conn_01x04_Female | PinHeader_1x04_P1.00mm_Vertical | J3, J4 |
| 1 | BoardOutline | 60-percent-plus-tofu | BOARD1 |
| 1 | Polyfuse | Fuse_1812_4532Metric_With_Adhesive | F1 |
| 3 | PINHD-1X1CB | 1X01-CLEANBIG | JP1, JP2, JP3 |
| 1 | TAB | Kailh_Socket_With_Diode_No_Diode_Trace | SW1 |
| 1 | Q | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW2 |
| 1 | W | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW3 |
| 1 | E | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW4 |
| 1 | R | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW5 |
| 1 | T | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW6 |
| 1 | Y | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW7 |
| 1 | U | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW8 |
| 1 | I | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW9 |
| 1 | O | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW10 |
| 1 | P | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW11 |
Show 46 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BKSP | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW12 |
| 1 | ESC | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW13 |
| 1 | A | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode_No_Diode_Trace | SW14 |
| 1 | S | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW15 |
| 1 | D | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW16 |
| 1 | F/LOWER | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW17 |
| 1 | G | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW18 |
| 1 | H | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW19 |
| 1 | J/RAISE | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW20 |
| 1 | K | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW21 |
| 1 | L | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW22 |
| 1 | ; | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode_No_Diode_Trace | SW23 |
| 1 | " | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode_No_Diode_Trace | SW24 |
| 1 | SHIFT | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode_No_Diode_Trace | SW25 |
| 1 | Z | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW26 |
| 1 | X | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW27 |
| 1 | C | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW28 |
| 1 | V | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW29 |
| 1 | B | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW30 |
| 1 | N | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW31 |
| 1 | M | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW32 |
| 1 | , | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW33 |
| 1 | . | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW34 |
| 1 | / | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW35 |
| 1 | ENTER | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode_No_Diode_Trace | SW36 |
| 1 | HYPER | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW37 |
| 1 | CTRL/GRV | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW38 |
| 1 | ALT/TAB | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW39 |
| 1 | CMD | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW40 |
| 1 | SHIFT | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW41 |
| 1 | BKSP/LIFT | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW42 |
| 1 | ENTER/LIFT | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW43 |
| 1 | SPACE | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW44 |
| 1 | LEFT | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW45 |
| 1 | DOWN | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW46 |
| 1 | UP | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW47 |
| 1 | RIGHT | Hybrid_Kailh_MX_Choc_Socket_Through_Hole_With_Diode | SW48 |
| 1 | SWITCH_PUSH | SW_SPST_B3U-1000P | SW_RESET1 |
| 1 | SWITCH_PUSH | Kailh_Socket_With_Diode_No_Diode_Trace | SW_RESET2 |
| 48 | DIODE | D_SOD-323_With_Adhesive | D1, D2, D3, D4, D5, D6, D7, D8 +40 |
| 1 | YELLOW | LED_0603_1608Metric_Castellated | L1 |
| 4 | 1µF | Capacitor-0805MP | C2, C4, C5, C7 |
| 1 | 10µF | Capacitor-0805MP | C3 |
| 3 | 1K | R_0603_1608Metric_With_Adhesive | R1, R10, R13 |
| 2 | 22 | R_0603_1608Metric_With_Adhesive | R8, R9 |
| 2 | 5.1K | R_0603_1608Metric_With_Adhesive | R11, R12 |
Checkpoint design files
The KiCad project lives in the kitsunekeyboards/shapeshifter4060 repository on GitHub; these links point at the commit this page was built from.
Checkpoint: common questions
What microcontroller does the Checkpoint use?
The Checkpoint is built around the ATMEGA32U4, from the AVR/Arduino family.
How big is the Checkpoint PCB?
The Checkpoint measures 285 × 95.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Checkpoint?
123 components, from 66 distinct parts. The full bill of materials is listed on this page.
Where can I download the Checkpoint design files?
From the kitsunekeyboards/shapeshifter4060 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Checkpoint design in my own project?
Yes, under the terms of its MIT license, which kitsunekeyboards chose for the repository.
Can I test firmware for the Checkpoint 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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