4 layers
HaptiCAD motor mount
EmielV2002/HaptiCAD
A PC peripheral based on the smartknob project by scottbez1.
12 parts1Apache-2.0
4 layers90 × 90.1 mm
HaptiCAD base
EmielV2002/HaptiCAD1A PC peripheral based on the smartknob project by scottbez1.
- Size
- 90 × 90.1 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 108
- Nets
- 86
- Pads
- 403
- Tracks, vias
- 210, 80
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Mar 2026
- Updated
- 6 Apr 2026
Overview
HaptiCAD base is an open-source printed circuit board by EmielV2002, from the EmielV2002/HaptiCAD repository on GitHub, published under the Apache-2.0 licence. It is a 4-layer board of 90 × 90.1 mm with 108 parts on 86 nets, routed with 210 tracks and 80 vias.
It is built around the SN74LV1T34DBV, PCA9546AD and STSPIN233, with the VEML7700-TR, AP2112K-3.3 and PRTR5V0U2X among its other parts. Its parts include 40 capacitors, 20 resistors, 20 diodes, 9 ICs and 5 connectors. It belongs with the STM32 boards of this library.
Main components
6
SN74LV1T34DBV
SOT-23-5-40℃~+125℃ 1 1 1.6V~5.5V 10uA 5.5ns@5V,15pF 74LV 8mA 8mA Level shifting Push-pull Unidirectional SOT-23-5 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
PCA9546AD
SOIC-16-40℃~+85℃ 2.3V~5.5V I2C、SMBus SOIC-16 Interface - Specialized ROHSTexas InstrumentsInterface - Specialized
STSPIN233
QFN-16-EP(3x3)-40℃~+150℃ 1.8V~10V 3 400mΩ 80nA Three Phase QFN-16-EP(3x3) Brushless DC (BLDC) Motor Driver ROHSSTMicroelectronicsGate Drivers
VEML7700-TR
SMD-4P-25℃~+85℃ 120klx 16bit 2.35mm 2.5V~3.6V 3mm 6.8mm I2C Light Intensity Low power/sleep mode、Spectral correction/filtering、High dynamic range measurement、Adjustable gain control、Interrupt/event trigger、Built-in temperature compensation SMD-4P Ambient Light Sensors ROHSVishay IntertechnologyAmbient Light SensorsAP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
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)
README
README.mdHaptiCAD
A PC peripheral based on the smartknob project by scottbez1.
Parts
108| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C201, C202, C203, C204, C205, C206, C207, C208, C209, C210, C211, C212, C213, C214, C215, C216 +6 |
| 16 | WS2812_4020 | PCM_marbastlib-xp-various:LED_WS2812_4020 | LED201, LED202, LED203, LED204, LED205, LED206, LED207, LED208, LED209, LED210, LED211, LED212, LED213, LED214, LED215, LED216 |
| 8 | 2.2k | Resistor_SMD:R_0603_1608Metric | R401, R402, R403, R404, R405, R406, R408, R409 |
| 7 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C801, C802, C803, C804, C805, C806, C807 |
| 4 | 5.1k | Resistor_SMD:R_0402_1005Metric | R301, R302, R501, R802 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H101, H102, H103, H104 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R407, R801, R805 |
| 3 | TLV493D | Package_TO_SOT_SMD:SOT-23-6 | U402, U403, U405 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C501, C502 |
| 2 | 18k | Resistor_SMD:R_0402_1005Metric | R602, R603 |
| 2 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C603, C604 |
| 2 | 20pF | Capacitor_SMD:C_0402_1005Metric | C808, C809 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C601, C602 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R803, R804 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_PTS810 | SW801, SW802 |
| 1 | +5V | TestPoint:TestPoint_Pad_D1.0mm | TP502 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C301 |
| 1 | 10nF | Capacitor_SMD:C_0402_1005Metric | C606 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y801 |
| 1 | 1nF | Capacitor_SMD:C_0402_1005Metric | C605 |
| 1 | 3.3V | TestPoint:TestPoint_Pad_D1.0mm | TP503 |
| 1 | 3.3k | Resistor_SMD:R_0402_1005Metric | R601 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U501 |
| 1 | BLDC | Connector_JST:JST_PH_B3B-PH-SM4-TB_1x03-1MP_P2.00mm_Vertical | J101 |
| 1 | ENC | Connector_JST:JST_PH_B5B-PH-SM4-TB_1x05-1MP_P2.00mm_Vertical | J102 |
| 1 | EXT_UART | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical_SMD_Pin1Left | J103 |
| 1 | FAULT | Diode_SMD:D_0603_1608Metric | D601 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP501 |
| 1 | LED_DATA | TestPoint:TestPoint_Pad_D1.0mm | TP201 |
| 1 | Layer marker | Symbol:LayerMarker_4_6.35x2.54mm_TextH1mm_P1.27mm_BottomMirrored | S101 |
| 1 | PCA9546A | PCA9546A:QFN-16_EP_5.25x5.25_Pitch0.65mm | U404 |
| 1 | PRTR5V0U2X | Package_TO_SOT_SMD:SOT-143 | D301 |
| 1 | SCL | TestPoint:TestPoint_Pad_D1.0mm | TP402 |
| 1 | SDA | TestPoint:TestPoint_Pad_D1.0mm | TP401 |
| 1 | SN74LV1T34DBV | Package_TO_SOT_SMD:SOT-23-5 | U201 |
| 1 | STM32G431CBUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U801 |
| 1 | STSPIN233 | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.8x1.8mm | U601 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical_SMD_Pin1Left | J801 |
| 1 | USB_C_Receptacle_USB2.0_16P | PCM_marbastlib-various:USB_C_Receptacle_HRO_TYPE-C-31-M-14 | J301 |
| 1 | USER | Diode_SMD:D_0603_1608Metric | D801 |
| 1 | VEML7700-TR | VEML7700-TR:XDCR_VEML7700-TR | U401 |
| 1 | VPWR | Diode_SMD:D_0603_1608Metric | D501 |
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Questions
How big is the HaptiCAD base PCB?
It measures 90 × 90.1 mm and has 4 copper layers, 1.6 mm thick.
What parts does the HaptiCAD base use?
108 parts, built around the SN74LV1T34DBV, PCA9546AD, STSPIN233 and VEML7700-TR. 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 HaptiCAD base KiCad files?
From the EmielV2002/HaptiCAD repository on GitHub, at the commit this page was made from: the board is HaptiCAD_base/HaptiCAD_base.kicad_pcb and its schematic HaptiCAD_base/HaptiCAD_base.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the HaptiCAD base design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).