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Input Devices
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This week I will use analog sensors to measure things like temperature and light using a Peizo vibration sensor and a phototransistor.
For reference, I used the Arduino love-o-meter project as it used the temperature sensor.
I started by collecting all the components.
I used this schematic to connect everything.
The circuit setup was fairly easy. This is how it looks.
At first all lights were continuously on. I checked the serial monitor and saw that the temperature was around 26 degrees without touching. So I adjusted the baseline temperature to 25 in the sketch. After some trial and error, I adjusted the sketch so that on touching it lightly for about 5 seconds, the second led lit up and on holding it tight for some seconds the third led lit up. The serial monitor indicated temperature range from 26-32 degrees.
So an increment of 2-4-6 degrees worked out perfectly.
This is it in action.
####Code
####Tutorials
[Arduino Project 3](https://create.arduino.cc/projecthub/godboi123/love-o-meter-bda552)
####Objective
1. measure something: add a sensor to a microcontroller board that you have designed and read it
2. probe an input device's analog levels and digital signals
#### Measuring light color using a RGB colour sensor
[ATtiny412 Datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny212-214-412-414-416-DataSheet-DS40002287A.pdf)
[VEML6040](https://www.vishay.com/docs/84276/veml6040.pdf)
#####Designing the board
Downloaded the footprint from [Here](https://www.snapeda.com/parts/VEML6040A3OG/Vishay%20Semiconductor%20Opto%20Division/view-part/702426/?company=-&welcome=home)
Installed the symbol and footprint on KiCAD using [this guide](https://www.snapeda.com/about/import/#)
![libraries]()
[Schematic pdf](./images/input/t412+VEML6040-schematic.pdf.zip)
[Schematic file](./images/input/t412+VEML6040rgbsensor.sch.zip)
[traces](./images/input/traces.rml.zip)
[Kicad pcbnew](./images/input/t412+VEML6040rgbsensor.kicad_pcb.zip)