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Lux sensor

benhoff·lux-sensor

Lux sensor PCB layout, top view — open source board by benhoff
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About the Lux sensor PCB

Lux sensor is an open source PCB design by benhoff, published on GitHub. It is a 4-layer board measuring 12.5 × 15 mm, with 16 components from 15 distinct parts.

Other key parts include the VEML7700-TT and CH543D. By type, the board carries 6 capacitors, 4 resistors, 2 ICs, 2 connectors, 1 jumper and 1 diode.

It belongs with the sensors designs in this gallery.

From the project

USB ambient light sensor based on a CH552G MCU and VEML7700 ALS, with:

USB ambient light sensor based on a CH552G MCU and VEML7700 ALS, with:

- KiCad hardware design in the repo root - minimal CH552 firmware that exposes readings over USB CDC ACM - optional Linux host daemon that maps lux readings to panel brightness

- lux-sensor.kicadsch, lux-sensor.kicadpcb, lux-sensor.kicadpro: hardware source - firmware/: CH552 firmware and build rules - host/: Linux daemon and service example - BOM.csv, BOMPCBWay.csv, BOMNOTES.md: purchasing and assembly notes - .pretty/, .kicadmod, .kicadsym: local footprint and symbol assets - CH552DS1.pdf, VEML7700.pdf: datasheet…

Main components on the Lux sensor

VEML7700-TTCH543D

Lux sensor bill of materials (BOM)

16 components, 15 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
VEML7700-TT
Vishay
U1
1
CH543D
U2
1
48037-2200
USB_A
Molex
J1
1
Conn_01x05_Pin
J2
1
Jumper_2_Open
JP1
1
LTST-C190KGKT
LED
Lite-On
D1
1
CL10A106KP8NNNC
10u
Samsung Electro-Mechanics
C1
1
CL10B104KB8NNNC
100nF
Samsung Electro-Mechanics
C2
1
CL21B104KBCNNNC
100nF
Samsung Electro-Mechanics
C3
2
1uF
C4, C5
1
10u
C6
1
RC0603FR-074K7L
4.7k
Yageo
R1
1
RC0402FR-074K7L
4.7k
Yageo
R2
1
RC0603FR-074K7L
10k
Yageo
R3
1
RC0603FR-074K7L
4.7k
Yageo
R4

Lux sensor design files

The KiCad project lives in the benhoff/lux-sensor repository on GitHub; these links point at the commit this page was built from.

Lux sensor: common questions

How big is the Lux sensor PCB?

The Lux sensor measures 12.5 × 15 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Lux sensor?

16 components, from 15 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Lux sensor design files?

From the benhoff/lux-sensor repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Lux sensor design in my own project?

The repository has no license, so all rights stay with benhoff. Use it as a reference, and ask the author before reusing the design.

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