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Input Devices.md 2.84 KiB

Input Devices

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.

Gathering components

I used this schematic to connect everything. Sketch

The circuit setup was fairly easy. This is how it looks. setupdocs/images/inputs/setup.jpeg

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.

serial

This is it in action. in action

####Code Sketch

####Tutorials Arduino Project 3

####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
VEML6040

#####Designing the board

Downloaded the footprint from Here Installed the symbol and footprint on KiCAD using this guide libraries

VEML6040 colour sensor pinout ATtiny412 pinout pins 412schematic schematic

layers mods error

####Design Files traces
outline
Schematic pdf
Schematic file
traces
Kicad pcbnew

References

https://en.wikipedia.org/wiki/List_of_sensors https://hackmd.io/RzTkiKoXTbqeQOn4Nz_zAw?view#INPUTS