2 layers120 × 185 mm
45lux fixed
lachlanfysh/45lux
4x5 large format camera light meter PCB — 16x TSL2591 HDR sensors, ESP32-S3 BLE, SSD1327 OLED, LIS2DH IMU
59 parts
2 layers120 × 185 mm
45lux
lachlanfysh/45lux4x5 large format camera light meter PCB — 16x TSL2591 HDR sensors, ESP32-S3 BLE, SSD1327 OLED, LIS2DH IMU
- Size
- 120 × 185 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 66
- Pads
- 381
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Jun 2026
- Updated
- 13 Jun 2026
Overview
45lux is an open-source printed circuit board by lachlanfysh, from the lachlanfysh/45lux repository on GitHub. It is a 2-layer board of 120 × 185 mm with 70 parts on 66 nets.
It is built around the AP2112K-3.3, ESP32-C6-MINI-1 and LIS2DH, with the LM393 and TCA9546APW among its other parts. Its parts include 27 capacitors, 22 ICs, 13 resistors, 4 switches and 2 connectors. It belongs with the sensors and measurement boards and the ESP32 and RISC-V boards of this library.
Main components
5
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
ESP32-C6-MINI-1
SMD,13.2x16.6mmSMD,13.2x16.6mm New Arrivals ROHSEspressif SystemsUncategorised
LIS2DH
LGA-14(2x2)-40℃~+85℃ 1.71V~3.6V Accelerometer SPI、I2C X,Y,Z ±16g LGA-14(2x2) Accelerometers ROHSSTMicroelectronicsAccelerometers
LM393
SOP-8-16V~16V 0℃~+70℃ 2 2.5mA 250nA 2V~36V 36V 5mV 5nA Fail-safe function Open-drain SOP-8 Comparators ROHSMSKSEMIComparators
TCA9546APW
TSSOP-16-40℃~+85℃ 1.65V~5.5V 1ns@5.5V,50pF 2uA 7mA Bus Switch Level shifting、Hot-swap protection Single Supply TSSOP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 25 | 100nF | C_0603_1608Metric | C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24 +9 |
| 16 | OPT3004 | DFN-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U4, U5, U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19 |
| 9 | 10K | R_0603_1608Metric | R3, R4, R5, R8, R9, R10, R11, R12, R13 |
| 4 | SW_Push | SW_TH_Tactile_Omron_B3F-106x | SW1, SW2, SW3, SW4 |
| 2 | 10uF | C_0805_2012Metric | C1, C7 |
| 2 | 4.7K | R_0603_1608Metric | R1, R2 |
| 1 | 100K | R_0603_1608Metric | R6 |
| 1 | 1M | R_0603_1608Metric | R7 |
| 1 | 3xAAA | BatteryHolder_Keystone_2479_3xAAA | BT1 |
| 1 | AP2112K-3.3 | SOT-23-5 | U1 |
| 1 | AS7343xDLG | AMS_OLGA-8_2x3.1mm_P0.8mm | U21 |
| 1 | BPW34-SMD | Osram_BPW34S-SMD | D1 |
| 1 | Conn_01x04_Pin | Molex_200528-0040_1x04-1MP_P1.00mm_Horizontal | J1 |
| 1 | Conn_02x03_Odd_Even | Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J2 |
| 1 | ESP32-C6-MINI-1 | ESP32-C6-MINI-1 | U2 |
| 1 | LIS2DH | Bosch_LGA-14_3x2.5mm_P0.5mm | U20 |
| 1 | LM393 | SOIC-8_3.9x4.9mm_P1.27mm | U22 |
| 1 | TCA9546APW | TSSOP-16_4.4x5mm_P0.65mm | U3 |
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Questions
How big is the 45lux PCB?
It measures 120 × 185 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 45lux use?
70 parts, built around the AP2112K-3.3, ESP32-C6-MINI-1, LIS2DH and LM393. 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 45lux KiCad files?
From the lachlanfysh/45lux repository on GitHub, at the commit this page was made from: the board is 45lux.kicad_pcb and its schematic generate_45lux.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 45lux design in my own project?
Its repository states no licence, so its author keeps all rights: ask lachlanfysh before reusing the design.