4 layers37.6 × 30.6 mm
Bias generator LT8362
OpenSiPM/sipm-bias-control
Single channel silicon photomultipliers for high-speed fluorescence imaging
61 parts44
2 layers323.9 × 114.3 mm
67keys trackpoint
dnbdmr/67key-keyboard67 key Keyboard with trackpoint using SAMD21
- Size
- 323.9 × 114.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 239
- Nets
- 122
- Pads
- 907
- Tracks, vias
- 1,455, 199
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Oct 2021
- Updated
- 11 Sep 2026
Overview
67keys trackpoint is an open-source printed circuit board by dnbdmr, from the dnbdmr/67key-keyboard repository on GitHub. It is a 2-layer board of 323.9 × 114.3 mm with 239 parts on 122 nets, routed with 1,455 tracks and 199 vias.
It is built around the ATSAMD21E18A-AF, AT24C16C-STUM and 74LS165PC. Its parts include 91 resistors, 22 capacitors, 12 ICs, 6 diodes and 3 transistors. It belongs with the SAM D and SAM boards of this library.
Main components
3
ATSAMD21E18A-AF
TQFP-32(7x7)-40℃~+125℃ 1.62V~3.6V 10bit 12bit 256KB 26 32 Bit 32KB 48MHz ARM Cortex-M0+ Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AT24C16C-STUM
SOT23-51.7V-5.5V, 16K (2K × 8-Bit) I2C Serial EEPROM MemoryMicrochip TechnologyUncategorised
74LS165PC
DIP-160.4mA 0℃~+70℃ 105mW 35MHz 4.75V~5.25V 47ns@5V,50pF 8 8mA Asynchronous parallel load function Complementary Parallel-to-Serial DIP-16 Shift RegistersTexas InstrumentsShift Registers
README
hw/README.md67 key Keyboard with trackpoint
Hardware
- 25x Splined Press-Fit Threaded Standoffs with Open End, Miniature, 3.2mm OD, 3mm Long. McMaster 92985A818. $4.12
- 25x Steel Pan Head Phillips Screw, M2 x 0.4 mm Thread, 10 mm Long. McMaster 92005A033. $4.14
- 25x Nylon Unthreaded Spacers, 1/4" OD, 1/4" Long, Black. McMaster 90176A133.
- 1x Nylon Unthreaded Spacer, 4.5 mm OD, 20 mm Long, for M3 Screw Size. For Trackpoint. McMaster 93657A223
- 1" Foam Mounting Tape, Repositionable, 1" Wide, 15 Feet Long, 0.0338" Overall Thickness. For Trackpoint. McMaster 8117A25
- 5x Adhesive back bumpers. $4.22
- 5x Adhesive back bumpers. $7.90
TODO REV B
- More testpoints
- labels on test points
- Label keys per qwerty
- High side FET to power off dotstars? Same for trackpoint? Can't get to USB suspend 2.5mA.
REV A PROBLEMS
- Switch 3V3 and ground planes?
- pin headers: put pin 1 on gnd
- Shift register outputs are all inverted. Should only be inverted on final register.
- Top board holes need to be 3.2mm for mini standoff, used a 3.1mm drill bit.
- Not enough clearance around mounting hardware. Especially spacers.
TODO REV A
- figure out mounting between boards
- More drawings?
- APA102 placement?
- make bottom mounting board
- make tp footprint and mount
- add mounting holes all over
- verify tp pinout and wiring
- add redundant buttons for mouse
- adjust designators?
- change tp conn to top contact?
Parts
239| Qty | Value | Footprint | References |
|---|---|---|---|
| 74 | 10k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31 +58 |
| 25 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H10, H11, H12, H13, H14, H15, H16, H17, H18, H19, H20, H21, H22, H23 +9 |
| 17 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2, C3, C4, C5, C7, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22 +1 |
| 9 | 74LS165 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U4, U5, U6, U7, U8, U9, U10, U11, U12 |
| 8 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R2, R5, R6, R7, R11, R12, R13 |
| 4 | 330 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R4, R10, R91 |
| 4 | 4.7u | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C9, C10, C11, C12 |
| 4 | APA102 | LED_SMD:LED_RGB_5050-6 | D1, D2, D3, D4 |
| 3 | 100 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R8, R9, R88 |
| 3 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R14, R15 |
| 2 | Conn_01x03_Male | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4, J5 |
| 2 | LED_Small | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5, D6 |
| 1 | ' | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWG7 |
| 1 | , | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF7 |
| 1 | - | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWG1 |
| 1 | . | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF8 |
| 1 | / | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWG8 |
| 1 | 0 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF2 |
| 1 | 1 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWA2 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C6 |
| 1 | 2 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWB1 |
| 1 | 3 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWB2 |
| 1 | 4 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC1 |
| 1 | 5 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC2 |
| 1 | 6 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD1 |
| 1 | 7 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWE1 |
| 1 | 8 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWE2 |
| 1 | 9 | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF1 |
| 1 | ; | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWG6 |
| 1 | = | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWG2 |
| 1 | A | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWB5 |
| 1 | AP2127K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | AT24C16C-STUM | Package_TO_SOT_SMD:SOT-23-5 | U13 |
| 1 | ATSAMD21E18A-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U2 |
| 1 | B | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD4 |
| 1 | BSP | Button_Switch_Keyboard:SW_Cherry_MX_2.00u_PCB | SWH1 |
| 1 | C | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC7 |
| 1 | D | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC5 |
| 1 | DEL | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWJ1 |
| 1 | DOWN | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWJ6 |
| 1 | E | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC3 |
| 1 | ENTER | Button_Switch_Keyboard:SW_Cherry_MX_2.25u_PCB | SWH3 |
| 1 | ESC/CAPS | Button_Switch_Keyboard:SW_Cherry_MX_1.75u_PCB | SWA4 |
| 1 | F | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC6 |
| 1 | FN | Button_Switch_Keyboard:SW_Cherry_MX_1.25u_PCB | SWH6 |
| 1 | G | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD3 |
| 1 | H | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWE5 |
| 1 | I | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF3 |
| 1 | J | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWE6 |
| 1 | K | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF5 |
| 1 | L | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF6 |
| 1 | L ALT | Button_Switch_Keyboard:SW_Cherry_MX_1.25u_PCB | SWA8 |
| 1 | L CTRL | Button_Switch_Keyboard:SW_Cherry_MX_1.25u_PCB | SWA6 |
| 1 | L SHIFT | Button_Switch_Keyboard:SW_Cherry_MX_2.25u_PCB | SWA5 |
| 1 | LEFT | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWJ5 |
| 1 | M | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWE8 |
| 1 | MB.L | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD6 |
| 1 | MB.L2 | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SWD7 |
| 1 | MB.M | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD8 |
| 1 | MB.M2 | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SWD9 |
| 1 | MB.R | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD10 |
| 1 | MB.R2 | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SWD11 |
| 1 | N | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWE7 |
| 1 | O | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWF4 |
| 1 | P | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWG3 |
| 1 | PG DN | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWJ3 |
| 1 | PG UP | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWJ2 |
| 1 | Q | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWB3 |
| 1 | R | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWC4 |
| 1 | R ALT | Button_Switch_Keyboard:SW_Cherry_MX_1.25u_PCB | SWH7 |
| 1 | R CTRL | Button_Switch_Keyboard:SW_Cherry_MX_1.25u_PCB | SWH5 |
| 1 | R SHIFT | Button_Switch_Keyboard:SW_Cherry_MX_2.75u_PCB | SWH4 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_TL3305A | SW1 |
| 1 | RIGHT | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWJ7 |
| 1 | S | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWB6 |
| 1 | SPACE | Button_Switch_Keyboard:SW_Cherry_MX_6.25u_PCB | SWD5 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | T | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SWD2 |
| 1 | TAB | Button_Switch_Keyboard:SW_Cherry_MX_1.50u_PCB | SWA3 |
The 224 most common of 239 parts.
Questions
How big is the 67keys trackpoint PCB?
It measures 323.9 × 114.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 67keys trackpoint use?
239 parts, built around the ATSAMD21E18A-AF, AT24C16C-STUM and 74LS165PC. 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 67keys trackpoint KiCad files?
From the dnbdmr/67key-keyboard repository on GitHub, at the commit this page was made from: the board is hw/67keys-trackpoint.kicad_pcb and its schematic hw/67keys-trackpoint.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 67keys trackpoint design in my own project?
Its repository states no licence, so its author keeps all rights: ask dnbdmr before reusing the design.
Similar boards
- 4 layers44.5 × 34.9 mm
Eclair
upbeatcarri/eclair
Pocket device for taking quick notes, acting as a USB keyboard for PC sync etc., with custom apps samd21, tinygo
56 parts25 - 4 layers100 × 100 mm
Pi TX 35W PA V2
M0LTE/pi-transceiver
An attempt to build a complete ham radio transceiver around a Raspberry Pi
185 parts15 - 4 layers33.6 × 18 mm
Cap sense ctrl
gregdavill/cap-sense-flex
A prototype of a flex measuring sensor. Based off: https://dl.acm.org/doi/10.1145/3313831.3376269
43 parts11 - 2 layers36.6 × 36.4 mm
- 2 layers37 × 39.8 mm
- 2 layers54.6 × 68 mm
Rng pcb
mitsake/rng-pcb
A hardware random number generator that uses avalanche noise. Based on the Trinket M0.
46 parts5CC-BY-SA-4.0 - 2 layers12 × 30 mm
Electric greetings
electricui/electricui-helloboard
Cute arduino compatible development board for introducing people to Electric UI
19 parts1