2 layers1.3 × 49 mm
2 layers100 × 69 mm
Light intensity data logger
Llamero/Light_Color_and_Intensity_Datalogger2Measures temperature, pressure, humidity, intensity and color of light and saves it to an SD card
- Size
- 100 × 69 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 61
- Pads
- 212
- Tracks, vias
- 931, 389
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 10 Jan 2020
- Updated
- 11 Mar 2020
Overview
Light intensity data logger is an open-source printed circuit board by Llamero, from the Llamero/Light_Color_and_Intensity_Datalogger repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 100 × 69 mm with 27 parts on 61 nets, routed with 931 tracks and 389 vias.
It is built around the BME280, TCS34725FN and TSL25911FN, with the BU2032SM-BT-GTR, JS202011SCQN and JS5208 among its other parts. Its parts include 5 ICs, 4 capacitors, 2 resistors, 2 diodes and 2 switches. It belongs with the sensors and measurement boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
7
BME280
LGA-8(2.5x2.5)-40℃~+85℃ 0%RH~100%RH 1.71V~3.6V 1.8uA 16bit I2C、SPI ±0.5℃ ±3%RH LGA-8(2.5x2.5) Temperature and Humidity Sensor ROHSBoschTemperature And Humidity Sensor
TCS34725FN
SMD-6P-30℃~+70℃ 16bit 2.4mm 2.7V~3.6V 235uA 2mm Color Recognition I2C Low power/sleep mode、Spectral correction/filtering、Adjustable gain control、Interrupt/event trigger Red, Green, Blue, Transparent SMD-6P Ambient Light Sensors ROHSAdvanced Monolithic SystemsAmbient Light Sensors
TSL25911FN
DFN-6(2x2.2)-30℃~+70℃ 2.7V~3.6V I2C Light Intensity DFN-6(2x2.2) Ambient Light Sensors ROHSAdvanced Monolithic SystemsAmbient Light Sensors
BU2032SM-BT-GTR
SMDBattery base CR2032 SMD Button And Strip Battery Connector ROHSMPDButton And Strip Battery Connector
JS202011SCQN
SMD-40℃~+85℃ 300mA 5,000 cycles 5.5mm 6V DPDT Rectangular Columnar SMD(SMT) Tab Surface Mount,Vertical SMD Slide Switches ROHSC&KSlide SwitchesJS5208
SMDSMD Pushbutton Switches ROHSE-SwitchPushbutton SwitchesNHD-0420H1Z-FL-GBW-33V3
-Parallel SPLC780DORST7066U - LCD Screen ROHSNewhaven DisplayLCD Screen
README
README.mdData Logger: Temperature, Pressure, Humidity, Light Intensity and Color
Summary:
This is an open-source data logger that can record air temperature, air pressure, relative humidity, visible light instensity, near-infrared light intensity, and visible light color (RGB). This data logger can record at up to 1 Hz onto a FAT32 formatted SD card. At 1Hz and with a full battery pack (6 AAs) the data logger should run for 200+ days on a single pack (depending on the SD card), with lower sampling frequencies increasing the duration to a maximum of >800 days (depending on the SD card). The light sensors employ an autogain feature with the intensity sensor having a 600,000,000:1 dynamic range, and a minimum sensitivity at about 1.0 nW/cm2.
Windows users: Use this program to format SD cards >32 GB http://www.ridgecrop.demon.co.uk/index.htm?guiformat.htm
For information on ordering, assembly, and programming, please see the instruction manual.
Development of this data logger was funded by NIH P30-EY003176-32
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1uF | Capacitors_SMD:C_0603 | C1, C2, C3 |
| 2 | Battery | Ben_Custom:BH3AAW-Battery_wire_pads | BT2, BT3 |
| 2 | D | Diodes_SMD:D_SOD-323 | D1, D2 |
| 1 | 100uF | Capacitors_SMD:C_1206 | C4 |
| 1 | 2 | Resistors_SMD:R_0603 | R2 |
| 1 | BME280 | digikey-footprints:Pressure_Sensor_LGA-8_2.5x2.5mm_BME280 | U1 |
| 1 | BU2032SM-BT-GTR | Ben_Custom:BU2032SM-BT-GTR | BT1 |
| 1 | EXB-2HV472JV_-_8x4.7k_resistor_array | Ben_Custom:4816P-1-472LF | R1 |
| 1 | JS202011SCQN | digikey-footprints:Switch_Slide_JS202011SCQN | S2 |
| 1 | JS5208 | digikey-footprints:Switch_Nav_12.4x12.4mm_SMD_JS5208 | S1 |
| 1 | Jumper_NO_Small | Ben_Custom:Banana_Jack_2Pin | JP1 |
| 1 | NHD-0420H1Z-FL-GBW-33V3 | Ben_Custom:NHD-0420H1Z-FL-GBW-33V3_Display_with_Header | LCD1 |
| 1 | Q_NMOS_GSD | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | TCS34725FN | Ben_Custom:TCS34725 | U2 |
| 1 | TS12A4514DBVR | TO_SOT_Packages_SMD:SOT-23-5 | U5 |
| 1 | TSL25911FN | Ben_Custom:TSL25911FN | U3 |
| 1 | Teensy3.6 | Ben_Custom:Teensy3.6_doublewide_header | U4 |
| 1 | Wire_to_Vbat | Wire_Pads:SolderWirePad_single_SMD_5x10mm | J1 |
The 22 most common of 27 parts.
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Questions
How big is the Light intensity data logger PCB?
It measures 100 × 69 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Light intensity data logger use?
27 parts, built around the BME280, TCS34725FN, TSL25911FN and BU2032SM-BT-GTR. 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 Light intensity data logger KiCad files?
From the Llamero/Light_Color_and_Intensity_Datalogger repository on GitHub, at the commit this page was made from: the board is Schematic and PCB layout/Light_intensity_data_logger/Light_intensity_data_logger.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Light intensity data logger 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).