4 layers148 × 78 mm
Hub
Bruhdows/klink
Klink is a magnetic tile system for building programmable machines. First up: a marble run with sensors, buttons, lights, gates, splitters and an elevator.
85 parts
4 layers68 × 68 mm
Tile
Bruhdows/klinkKlink is a magnetic tile system for building programmable machines. First up: a marble run with sensors, buttons, lights, gates, splitters and an elevator.
- Size
- 68 × 68 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 122
- Nets
- 104
- Pads
- 392
- Tracks, vias
- 361, 65
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Nov 2026
- Updated
- 6 Nov 2026
Overview
Tile is an open-source printed circuit board by Bruhdows, from the Bruhdows/klink repository on GitHub. It is a 4-layer board of 68 × 68 mm with 122 parts on 104 nets, routed with 361 tracks and 65 vias.
It is built around the CH32X035G8U6, SN74LVC244APWRE4 and LMR36520ADDAR, with the TPS26600PWPR, AP2112K-3.3TRG1 and SN74AHCT1G125DBVR(UMW) among its other parts. Its parts include 55 resistors, 30 capacitors, 12 ICs, 6 diodes and 5 fuses.
Main components
12
CH32X035G8U6
QFN-28(4X4)-40℃~+85℃ 12bit 20KB 27 3.3V、5V 32 Bit 48MHz 62KB Built-in FLASH RISC-V4C QFN-28(4X4) Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)
SN74LVC244APWRE4
TSSOP-20-40℃~+125℃ 1.65V~3.6V 2 24mA 24mA 4 40uA 5.7ns@3.3V,50pF 74LVC Output enable、Level shifting Tri-State Unidirectional TSSOP-20 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffer/Driver/Transceiver
LMR36520ADDAR
SOPowerPAD-8-40℃~+125℃@(TJ) 1 1V~28V 2A 4.2V~65V 400kHz Adjustable Buck Buck Built-in Yes SOPowerPAD-8 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
TPS26600PWPR
HTSSOP-16-EPSurge Protection Devices (SPDs)Texas Instruments
AP2112K-3.3TRG1
SOT-25-5-40℃~+85℃@(Ta) 1 250mV@(600mA) 3.3V 50uVrms 55uA 600mA 65dB@(1kHz) 6V Fixed Over Current Protection、Thermal Shutdown、Enable control Positive SOT-25-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSN74AHCT1G125DBVR(UMW)
SOT-23-5-40℃~+125℃ 1 1 10uA 12ns@5V,50pF 2V 3.8V、4.4V 4.5V~5.5V 440mV 74AHCT 800mV 8mA 8mA SOT-23-5 Logic Gates ROHSUMWLogic GatesSN74LVC1G08DBVR
SOT-23-5-40℃~+85℃ 1 1.65V~5.5V 1.7V、2V 100nA 2 3.4ns@5V,15pF 32mA 32mA 350mV 4V 700mV、800mV 74LVC AND Gate Local shutdown mode SOT-23-5 Logic Gates ROHSTWGMCLogic Gates
TPS3808G01DBVR-TP
SOT-23-6SOT-23-6 Supervisor and Reset ICs ROHSTECH PUBLICUncategorised
RC0805FR-0710KL
UncategorisedUnknown maker
RT0805BRD0710KL
0805-55℃~+155℃ 10kΩ 125mW 150V Thin Film Resistor ±0.1% ±25ppm/℃ 0805 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
CC0805KRX7R9BB103
080510nF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTRT0805BRD07187KL
0805-55℃~+155℃ 125mW 150V 187kΩ Thin Film Resistor ±0.1% ±25ppm/℃ 0805 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
README
README.mdKlink
Klink is a magnetic tile system for building programmable machines. First up: a marble run with sensors, buttons, lights, gates, splitters and an elevator.
V1 requires at least 16 smart tiles and a motorized elevator for continuous circulation. The power budget also targets 24-32 tiles in suitable grids. Each tile is 80 × 80 × 20 mm, with four neighbor connections and two RGB LEDs. A Hub will handle USB, layout discovery and programs that run without a computer.
Rev A uses a 20V bus, with 5V and 3.3V made on each tile. The schematic is in place, but the connectors and protection still need testing. The PCB isn't routed. Disconnect power before moving tiles.
Hardware sources are in hardware/electronics/ and hardware/cad/. Firmware, SDK and Studio are still planned work.
Parts
122| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 100nF 50V X7R | Capacitor_SMD:C_0805_2012Metric | C1, C5, C6, C10, C14, C15, C17, C20, C21, C22, C23, C25, C29, C30, C31, C32 +1 |
| 11 | 10k | Resistor_SMD:R_0805_2012Metric | R4, R7, R8, R9, R15, R19, R20, R27, R46, R48, R49 |
| 8 | 2.2k 1% 0.25W | Resistor_SMD:R_1206_3216Metric | R30, R31, R34, R35, R38, R39, R42, R43 |
| 8 | 47k | Resistor_SMD:R_0805_2012Metric | R32, R33, R36, R37, R40, R41, R44, R45 |
| 5 | 0466001.NR | Fuse:Fuse_1206_3216Metric | F1, F2, F3, F4, F5 |
| 4 | 100k | Resistor_SMD:R_0805_2012Metric | R10, R13, R14, R47 |
| 4 | 10k 0.1% | Resistor_SMD:R_0805_2012Metric | R18, R26, R52, R55 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric | R5, R6, R24, R50 |
| 4 | MountingHole_2.5mm | MountingHole:MountingHole_2.5mm | H1, H2, H3, H4 |
| 2 | 10nF 50V | Capacitor_SMD:C_0805_2012Metric | C13, C33 |
| 2 | 187k 0.1% | Resistor_SMD:R_0805_2012Metric | R17, R25 |
| 2 | 1uF 50V | Capacitor_SMD:C_0805_2012Metric | C18, C19 |
| 2 | 22uF 25V X7R | Capacitor_SMD:C_1210_3225Metric | C11, C12 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 402k 1% | Resistor_SMD:R_0805_2012Metric | R22, R23 |
| 2 | SMBJ22A-E3/52 | Diode_SMD:D_SMB | D6, D7 |
| 2 | SMBJ22CA-E3/52 | Diode_SMD:D_SMB | D4, D5 |
| 2 | TMUX1511PWR | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U12, U13 |
| 2 | TPS26600PWPR | Klink:TI_PWP0016A_Mask3.3x3.3 | U5, U7 |
| 2 | WS2812B-V5 | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D3 |
| 1 | +3V3 | TestPoint:TestPoint_Pad_D2.0mm | TP4 |
| 1 | +5V | TestPoint:TestPoint_Pad_D2.0mm | TP3 |
| 1 | 100k 0.1% | Resistor_SMD:R_0805_2012Metric | R28 |
| 1 | 103k 0.1% | Resistor_SMD:R_0805_2012Metric | R51 |
| 1 | 10k 1% | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | 10nF | Capacitor_SMD:C_0805_2012Metric | C16 |
| 1 | 10uF 50V X7R | Capacitor_SMD:C_1206_3216Metric | C8 |
| 1 | 10µF | Capacitor_SMD:C_1206_3216Metric | C4 |
| 1 | 120uF 6.3V | Klink:CP_Panasonic_POSCAP_B2 | C7 |
| 1 | 12k 1% | Resistor_SMD:R_0805_2012Metric | R21 |
| 1 | 150k 1% | Resistor_SMD:R_0805_2012Metric | R11 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 1uF 16V | Capacitor_SMD:C_0805_2012Metric | C24 |
| 1 | 24.9k 0.1% | Resistor_SMD:R_0805_2012Metric | R29 |
| 1 | 24k 1% | Resistor_SMD:R_0805_2012Metric | R16 |
| 1 | 3.32k 0.1% | Resistor_SMD:R_0805_2012Metric | R53 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 35.7k 0.1% | Resistor_SMD:R_0805_2012Metric | R54 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | AP2112K-3.3TRG1 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | BUS_20V | TestPoint:TestPoint_Pad_D2.0mm | TP1 |
| 1 | CH32X035G8U6 | Package_DFN_QFN:WQFN-28-1EP_4x4mm_P0.4mm_EP2.7x2.7mm | U1 |
| 1 | DEBUG_3V3_MONITOR | Klink:Debug_1x04_P2.54_Pads | J1 |
| 1 | GND | TestPoint:TestPoint_Pad_D2.0mm | TP7 |
| 1 | LMR36520ADDAR | Package_SO:TI_SO-PowerPAD-8 | U4 |
| 1 | MODULE_20V | TestPoint:TestPoint_Pad_D2.0mm | TP6 |
| 1 | MODULE_5V | TestPoint:TestPoint_Pad_D2.0mm | TP5 |
| 1 | RGB_DOUT_TEST | TestPoint:TestPoint_Pad_D2.0mm | TP8 |
| 1 | SN74AHCT1G125DBVR | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | SN74LVC1G08DBVR | Package_TO_SOT_SMD:SOT-23-5 | U15 |
| 1 | SN74LVC244APWR | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U8 |
| 1 | SRP7050TA-150M | Klink:L_Bourns_SRP7050TA | L1 |
| 1 | TILE_20V | TestPoint:TestPoint_Pad_D2.0mm | TP2 |
| 1 | TPS259470LRPWR | Klink:TI_RPW0010A_2x2mm | U3 |
| 1 | TPS3808G01DBVR | Package_TO_SOT_SMD:SOT-23-6 | U14 |
Questions
How big is the Tile PCB?
It measures 68 × 68 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tile use?
122 parts, built around the CH32X035G8U6, SN74LVC244APWRE4, LMR36520ADDAR and TPS26600PWPR. 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 Tile KiCad files?
From the Bruhdows/klink repository on GitHub, at the commit this page was made from: the board is hardware/electronics/tile/tile.kicad_pcb and its schematic hardware/electronics/elevator/elevator.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tile design in my own project?
Its repository states no licence, so its author keeps all rights: ask Bruhdows before reusing the design.
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