Display your Temperature on Screen

This lesson combines the code from the Hello World OLED screen lesson and the temperature sensor code. Here are links to those two activities so that you can go back to them if needed. 
OLED Screen Lesson: https://www.rcccamp.org/day-4-supplement-oled-screen-basics.html
Temperature Sensor Lesson: https://www.rcccamp.org/day-1-supplement-measure-temperature.html

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Supplies Needed

Arduino and USB Cord

Breadboard

4.7K to 5.3K Resistor 
You likely have a 5.1K in your kit

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OLED Screen

Temperature Probe

Jumper Wires

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Reminding Ourselves of the Old Codes

We will use the basics of what we learned from coding the screen and temperature sensor to do this activity. We will be combining the two codes so that the LCD screen displays the temperature. 
Here is the old codes. 

Temperature Sensor Code

OLED Screen Code 

The Wiring

The wiring is combining the two together. Here is what they looked like on their own.
​Just do both together at the same time. 

Except plug the screen into the 3.3 V 
This is because the 5V will be used by the temperature sensor. 

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Combine the Wiring

We need two things plugged into  5V? But fun fact, the screen can also run on 3.3 V!
Here is how to wire it. 
1) Screen's GND to Arduino GND
2) Screen's VCC to Arduino 3.3 V 
3) Screen's SCL to Arduino A5
4) Screen's SDA to Arduino A4

5) Temp probe's red wire to Arduino 5V 
6) Temp probe's black wire to Arduino GND 
7) Temp probe's yellow wire to Arduino pin 2 
8) Jump the 5k resistor from yellow to red row on the breadboard 

Combining the code

There are several main parts to the codes. The parts before the setup, the setup, and the loop.
We need to move these parts from one code to the other code. That will look something like this.
We do not need the serial begin any more though because we are only using the display