2 layers5.8 × 5.6 mm
PD Daughterboard
drleavsy/LightFusion
Wearable Near Infrared Stimulator With FMRI - EEG Feedback
5 parts
4 layers61 × 42 mm
LightFusion
drleavsy/LightFusionWearable Near Infrared Stimulator With FMRI - EEG Feedback
- Size
- 61 × 42 mm
- Copper layers
- 4
- Thickness
- 0.96 mm
- Parts
- 106
- Nets
- 94
- Pads
- 353
- Tracks, vias
- 987, 141
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Apr 2026
- Updated
- 24 Aug 2026
Overview
LightFusion is an open-source printed circuit board by drleavsy, from the drleavsy/LightFusion repository on GitHub. It is a 4-layer board of 61 × 42 mm with 106 parts on 94 nets, routed with 987 tracks and 141 vias.
It is built around the MDBT42-512KV2, DRV8837DSGR-MS and ADS1292IPBSR, with the TPS7A2033PDBVR-TP, FP11055_LISA2-RS-PIN and SST-10-IRD-B90H-S810 among its other parts. Its parts include 41 capacitors, 37 resistors, 10 ICs, 7 connectors and 3 diodes. It belongs with the sensors and measurement boards and the nRF52 and nRF5x boards of this library.
Main components
10MDBT42-512KV2
SMD-41PSMD-41P Bluetooth Modules ROHSRAYTACBluetooth ModulesDRV8837DSGR-MS
WSON-8-EP(2x2)-40℃~+125℃ 1.5A 1.8V~7V 17nA 650mΩ Yes WSON-8-EP(2x2) Brushed DC Motor Drivers ROHSMSKSEMIBrushed DC Motor Drivers
ADS1292IPBSR
TQFP-32(5x5)-40℃~+85℃ 107dB 2 2.42V、4.033V 2.7V~5.25V 20uA 24 512kHz Programmable gain、Multiplexers、Internal reference source、Fault detection SPI TQFP-32(5x5) Analog Front End (AFE) ROHSTexas InstrumentsAnalog Front End (AFE)
TPS7A2033PDBVR-TP
SOT-23-5-40℃~+85℃ 1 180uV@(300mA) 2uA 3.3V 300mA 5.5V 75dB@(1kHz) Fixed Over Current Protection、Enable、Thermal Shutdown Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICUncategorisedFP11055_LISA2-RS-PIN
-Optoelectronics AccessoriesLedil
SST-10-IRD-B90H-S810
SMD3535SMD3535 Infrared LED Emitters ROHSLuminus DevicesInfrared LED Emitters303C-C4115-30-04
-- Lack of specifications ROHSAttend TechnologyUncategorisedJS102000SAQN
SMD-40℃~+85℃ 0.7mm 15,000 cycles 4.7mm 5V 6.7mm Black PC Pin Rectangular Columnar SPDT Surface Mount,Vertical SMD Slide Switches ROHSC&KSlide SwitchesPHR-2
P=2mm-25℃~+85℃ 1 1x2P 2 2mm Non-Latching PA66 PH UL94V-0 White Without Fins P=2mm Housings (Wire To Board / Wire To Wire ) ROHSJSTHousings (Wire To Board / Wire To Wire )
VEMD8082
SMD-40℃~+85℃ 10nA 20V 350nm~1100nm 65° 890nm SMD Photodiodes ROHSVishay IntertechnologyPhotodiodes
Parts
106| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100 nF | LightFusion:C_0603_1608Metric | C6, C10, C14, C18, C20, C21, C27, C29, C33, C34, C36, C40 |
| 5 | 100 kΩ | LightFusion:R_0603_1608Metric | R7, R14, R17, R18, R19 |
| 5 | ~ | LightFusion:0914015207714110 | E1, E2, E3, E4, E5 |
| 4 | 10k | LightFusion:R_0603_1608Metric | R28, R29, R33, R34 |
| 4 | 22 MΩ | LightFusion:R_0603_1608Metric | R3, R4, R5, R6 |
| 4 | 47 nF | LightFusion:C_1206_3216Metric | C1, C2, C3, C4 |
| 4 | 51 kΩ | LightFusion:R_0603_1608Metric | R10, R11, R12, R13 |
| 4 | Conn_01x01_Pin | LightFusion:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm | J3, J4, J5, J6 |
| 3 | 1 MΩ | LightFusion:R_0603_1608Metric | R15, R22, R23 |
| 3 | 10 µF | LightFusion:C_0603_1608Metric | C5, C9, C13 |
| 2 | 0.13 Ohm | LightFusion:R_1206_3216Metric | R25, R26 |
| 2 | 1 uF | LightFusion:C_0603_1608Metric | C23, C24 |
| 2 | 1 µF | LightFusion:CAPPC2012X90N | C16, C17 |
| 2 | 1 µF | LightFusion:C_0603_1608Metric | C22, C43 |
| 2 | 10 kΩ | LightFusion:R_0603_1608Metric | R8, R9 |
| 2 | 10 uF | LightFusion:C_0603_1608Metric | C26, C28 |
| 2 | 100R | LightFusion:R_0603_1608Metric | R30, R31 |
| 2 | 100k | LightFusion:R_0603_1608Metric | R36, R37 |
| 2 | 100nF | LightFusion:C_1206_3216Metric | C37, C38 |
| 2 | 10uF | LightFusion:C_0603_1608Metric | C39, C41 |
| 2 | 2.2 nF | LightFusion:C_0402_1005Metric | C7, C8 |
| 2 | 22 kΩ | LightFusion:R_0603_1608Metric | R20, R21 |
| 2 | 4.7 nF | LightFusion:C_0402_1005Metric | C11, C12 |
| 2 | 4.7k | LightFusion:R_0603_1608Metric | R1, R2 |
| 2 | FP11055_LISA2-RS-PIN | LightFusion:LEDIL_FP11055_LISA2_RS_PIN | OPT1, OPT2 |
| 2 | SST-10-IRD-B90H-S810 | LightFusion:SST10IRDB90HS810 | D1, D2 |
| 2 | ~ | LightFusion:PAM2808BLBR | U6, U7 |
| 1 | 1 MOhm | LightFusion:R_0603_1608Metric | R24 |
| 1 | 1 nF | LightFusion:C_0603_1608Metric | C25 |
| 1 | 1.5 nF | LightFusion:C_0402_1005Metric | C15 |
| 1 | 1.8k | LightFusion:R_0603_1608Metric | R32 |
| 1 | 10 nF | LightFusion:C_0603_1608Metric | C32 |
| 1 | 10 Ω | LightFusion:R_0603_1608Metric | R16 |
| 1 | 10R | LightFusion:R_0603_1608Metric | R35 |
| 1 | 1uF | LightFusion:C_0603_1608Metric | C35 |
| 1 | 303C-C4115-30-04 | LightFusion:303D-L186F020 | J1 |
| 1 | 4.7 kOhm | LightFusion:R_0603_1608Metric | R27 |
| 1 | 4.7 uF | LightFusion:C_0603_1608Metric | C19 |
| 1 | 6.8pF | LightFusion:C_0603_1608Metric | C42 |
| 1 | ADS1292IPBSR | LightFusion:ADS1292IPBSR | U5 |
| 1 | DRV8837DSGR | LightFusion:DRV8837DSGR | U4 |
| 1 | JS102000SAQN | LightFusion:JS102000SAQN | S1 |
| 1 | MCP3561T-E_ST | LightFusion:MCP3561T-E_ST | U9 |
| 1 | MDBT42-512KV2 | LightFusion:MDBT42512KV2 | U1 |
| 1 | OPA381AIDGKR | LightFusion:OPA381AIDGKR | U10 |
| 1 | PHR-2 | LightFusion:SolderWire-0.5sqmm_1x02_P4.8mm_D0.9mm_OD2.3mm | P1 |
| 1 | SOT50P160X60-6N | LightFusion:TMP1075-MOD-A | U8 |
| 1 | TC2030-IDC-FP | LightFusion:TC2030IDCFP | J2 |
| 1 | TPS22918DBVR | LightFusion:TPS22918DBVR-6N | U3 |
| 1 | TPS7A2033PDBVR | LightFusion:TPS7A2033PDBVR | U2 |
| 1 | VEMD8082 | LightFusion:VEMD8082C | D3 |
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Questions
How big is the LightFusion PCB?
It measures 61 × 42 mm and has 4 copper layers, 0.96 mm thick.
What parts does the LightFusion use?
106 parts, built around the MDBT42-512KV2, DRV8837DSGR-MS, ADS1292IPBSR and TPS7A2033PDBVR-TP. 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 LightFusion KiCad files?
From the drleavsy/LightFusion repository on GitHub, at the commit this page was made from: the board is LightFusion.kicad_pcb and its schematic LED.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LightFusion design in my own project?
Its repository states no licence, so its author keeps all rights: ask drleavsy before reusing the design.