Arduino Tiny Temperature Shield Project

Created on: 30 October 2012

In this Arduino project, you will build a small shield that measures temperature and will switch on one of three LEDs depending on the current temperature measurement. Each LED can be set to switch on in a predefined temperature range.

The PC software for the project is written in the Processing language and displays the current temperature, temperature history on a graph and the status of the three LEDs on the shield.

This video shows the completed project.

Circuit Diagram

A MCP9700 temperature sensor connected to the Arduino A0 analog pin is used to measure temperature. Three LEDs can be set to switch on at preset temperatures.

Project Components

You will need an Arduino board such as the Arduino Uno and a stripboard shield from the Tiny Stripboard Shield for Arduino project.

The following components are also required:

Qty	Part	Designator	Notes	Type
3	330 ohm resistor	R1, R2, R3	1/4W, 5% or better, any value between 220 ohms and 470 ohms will do	Resistors
3	3mm LED	D1, D2, D3	One red, one green and one amber or yellow LED	Semiconductors
1	MCP9700	U1	Temperature sensor IC
2	100n capacitors	C1, C2	Optional for improving stability	Capacitors

Components Used in the Arduino Temperature Shield Project