4 layers150 × 50 mm
4 layers70.7 × 56.9 mm
HEI Shift Light
drewsum/HEI_Shift_LightAn automotive shift light meant to integrate into the TACH signal from an HEI distributor, to be embedded in a dashboard
- Size
- 70.7 × 56.9 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 112
- Nets
- 76
- Pads
- 355
- Tracks, vias
- 672, 170
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 May 2026
- Updated
- 17 Jul 2026
Overview
HEI Shift Light is an open-source printed circuit board by drewsum, from the drewsum/HEI_Shift_Light repository on GitHub. It is a 4-layer board of 70.7 × 56.9 mm with 112 parts on 76 nets, routed with 672 tracks and 170 vias.
It is built around the PIC18F16Q41-I/P, FT234XD-R and LM2907, with the TPS62153RGT, ISO7321CD and TPS26624DRCR among its other parts. Its parts include 41 resistors, 31 capacitors, 7 ICs, 7 diodes and 5 transistors. It belongs with the PIC boards of this library.
Main components
10
PIC18F16Q41-I/P
PDIP-20-40℃~+85℃ 1.8V~5.5V 12bit 18 4KB 512Byte 64KB 64MHz 8 Bit 8bit Built-in FLASH PIC PDIP-20 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
FT234XD-R
DFN-12(3x3)-40℃~+85℃ 125uA 2.97V~5.5V 8mA USB 2.0 USB to UART DFN-12(3x3) USB Converters ROHSFTDIUSB Converters
LM2907
DIP-14DIP-14 V/F and F/V Converters ROHSGcoreUncategorised
TPS62153RGT
VQFN-16-EP(3x3)-40℃~+85℃@(TA) 1 1A 2.5MHz 3V~17V 5V Buck Buck Built-in Fixed Yes QFN-16-EP(3x3) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
ISO7321CD
SOIC-8-40℃~+125℃ 1 1 25Mbps 3000 33ns 3V~5.5V 3V~5.5V 65kV/us Fail-safe output、Output status configurable High Level、Low Level SOIC-8 Digital Isolators ROHSTexas InstrumentsDigital Isolators
TPS26624DRCR
SON-10(3x3)-40℃~+125℃ 3mm 3mm 4.5V~60V 478mΩ Integrated FET Overcurrent Protection、Short-Circuit Protection、Under-voltage lockout、Thermal Protection、Overvoltage clamping protection、Overload protection Surface Mount SON-10(3x3) Surge Protection Devices (SPDs) ROHSTexas InstrumentsSurge Protection Devices (SPDs)
CRCW080510K0FKEAC
0805-55℃~+155℃ 10kΩ 125mW Thick Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
BAT54SW
SOT-3231 Pair Series Connection 200mA 2uA@25V 30V 600mA 800mV@100mA SOT-323 Schottky Diodes ROHSNexperiaSchottky Diodes
PESD5V0L4UF
XSON-6(1x1.5)-65℃~+150℃ 13V 16pF 2.5A@8/20us 30W@8/20us 5V 5nA 6.46V ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional XSON-6(1x1.5) ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)SP0502BAJTG
SC-70-3-40℃~+85℃ 1nA 2 30pF 5.5V 8.5V Bidirectional IEC 61000-4-2 TVS SC-70-3 ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
README
README.mdHEI_Shift_Light
An automotive shift light meant to integrate into the TACH signal from an HEI distributor, to be embedded in a dashboard
Parts
112| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 0.1uF | Capacitors_SMD:C_0402 | C202, C203, C303, C403, C404, C501, C502, C503, C601, C602, C604, C605, C609, C611 |
| 9 | 10k | Resistors_SMD:R_0402 | R301, R306, R406, R501, R503, R504, R704, R705, R706 |
| 7 | 100k | Resistors_SMD:R_0402 | R205, R404, R405, R601, R602, R605, R606 |
| 7 | 10uF | Capacitors_SMD:C_0603 | C305, C406, C407, C504, C603, C606, C610 |
| 6 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopBottom | H801, H802, H803, H804, H813, H814 |
| 5 | 27 | Resistors_SMD:R_0402 | R603, R604, R701, R702, R703 |
| 5 | DMN3150LW-7 | Package_TO_SOT_SMD:SOT-323_SC-70 | Q301, Q302, Q701, Q702, Q703 |
| 3 | 10nF | Capacitors_SMD:C_0402 | C302, C402, C405 |
| 2 | 10k | Resistors_SMD:R_0805 | R401, R402 |
| 2 | 10uF | Capacitors_SMD:C_1206 | C204, C301 |
| 2 | 150 | Resistors_SMD:R_0603 | R307, R708 |
| 2 | 47pF | Capacitors_SMD:C_0402 | C607, C608 |
| 2 | 5.1k | Resistors_SMD:R_0402 | R607, R608 |
| 2 | 600R 0.5A | Inductors_SMD:L_0402 | L601, L602 |
| 2 | 91 | Resistors_SMD:R_0603 | R707, R709 |
| 2 | BAT54SW | Package_TO_SOT_SMD:SOT-323_SC-70 | D301, D402 |
| 2 | TVS | Diode_SMD:D_SMB | D201, D401 |
| 1 | 0 | Resistors_SMD:R_0402 | R303 |
| 1 | 10 | Resistors_SMD:R_0402 | R302 |
| 1 | 100uF | Capacitor_Tantalum_SMD:CP_EIA-7343-43_Kemet-X | C201 |
| 1 | 10uH | Inductor_SMD:L_Vishay_IHLP-2020 | L201 |
| 1 | 133k | Resistors_SMD:R_0402 | R407 |
| 1 | 15k | Resistors_SMD:R_0402 | R202 |
| 1 | 180k | Resistors_SMD:R_0402 | R305 |
| 1 | 1k | Resistors_SMD:R_0402 | R502 |
| 1 | 2.2uH | Inductors_SMD:L_Vishay_IHLP-1212 | L301 |
| 1 | 22uF | Capacitors_SMD:C_1206 | C304 |
| 1 | 30.1k | Resistors_SMD:R_0402 | R203 |
| 1 | 3300pF | Capacitors_SMD:C_0402 | C401 |
| 1 | 332k | Resistors_SMD:R_0402 | R201 |
| 1 | 42.2k | Resistors_SMD:R_0402 | R206 |
| 1 | 5.6k | Resistors_SMD:R_0402 | R403 |
| 1 | 562k | Resistors_SMD:R_0402 | R304 |
| 1 | 5V | TestPoint:TestPoint_Pad_D1.0mm | TP301 |
| 1 | 7.5k | Resistors_SMD:R_0402 | R204 |
| 1 | C2OUT | TestPoint:TestPoint_Pad_D1.0mm | TP501 |
| 1 | CLKR | TestPoint:TestPoint_Pad_D1.0mm | TP503 |
| 1 | FT234XD | Housings_DFN_QFN:DFN-12-1EP_3x3mm_Pitch0.45mm | U601 |
| 1 | GND | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Horizontal | TP201 |
| 1 | ISO7321C | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U602 |
| 1 | Inolux_IN-P55TATRGB | LED_SMD:LED_Inolux_IN-P55TATRGB_PLCC6_5.0x5.5mm_P1.8mm | D701 |
| 1 | LM2907 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U401 |
| 1 | MCP4019-103ELT | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U402 |
| 1 | OPA1OUT | TestPoint:TestPoint_Pad_D1.0mm | TP502 |
| 1 | Owl_1_Logo | Custom Footprints Library:Owl_1_Logo | G*** |
| 1 | PESD5V0L4UF | Package_TO_SOT_SMD:SOT-886 | D501 |
| 1 | PIC18F16Q41 | Package_DFN_QFN:VQFN-20-1EP_3x3mm_P0.4mm_EP1.7x1.7mm | U501 |
| 1 | PICKIT4 | Custom Footprints Library:PICKIT4_Header | J501 |
| 1 | SP0502BAJTG | Package_TO_SOT_SMD:SOT-323_SC-70 | D601 |
| 1 | TACH | Custom Footprints Library:CONN_7691_KEY | J401 |
| 1 | TPS26624DRCR | Package_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.65x2.4mm | U201 |
| 1 | TPS62153 | Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.675x1.675mm | U301 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4110 | J601 |
| 1 | VIN | TestPoint:TestPoint_Pad_D1.0mm | TP202 |
| 1 | VIN | Custom Footprints Library:CONN_7691_KEY | J201 |
Questions
How big is the HEI Shift Light PCB?
It measures 70.7 × 56.9 mm and has 4 copper layers, 1.61 mm thick.
What parts does the HEI Shift Light use?
112 parts, built around the PIC18F16Q41-I/P, FT234XD-R, LM2907 and TPS62153RGT. 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 HEI Shift Light KiCad files?
From the drewsum/HEI_Shift_Light repository on GitHub, at the commit this page was made from: the board is hdw/HEI_Shift_Light/HEI_Shift_Light.kicad_pcb and its schematic hdw/HEI_Shift_Light/5v_power_supply.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the HEI Shift Light design in my own project?
Its repository states no licence, so its author keeps all rights: ask drewsum before reusing the design.
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