input dev - temp

docs/Input Devices.md

+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](./images/input/shopping.jpeg)
+
+I used this schematic to connect everything.
+![Sketch](./images/input/schematic.jpeg)
+
+The circuit setup was fairly easy. This is how it looks.
+![setup](./images/input/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](./images/input/serial.jpeg)
+
+This is it in action.
+![in action](./images/input/hot.gif)
+
+####Code
+![Sketch](./images/input/3leds.zip)
+
+####Tutorials
+[Arduino Project 3](https://create.arduino.cc/projecthub/godboi123/love-o-meter-bda552)