# Arduino Lesson 12. LCD Displays - Part 2 ## Overview In this lesson, you will build on what we have learnt in lesson 11 and use a LCD display to show the temperature and light intensity.   ![](https://cdn-learn.adafruit.com/assets/assets/000/002/442/medium800/learn_arduino_overview.jpg?1396783197) Light intensity is measured using the same photocell that you used in lesson 9. To measure the temperature, you will use a temperature measurement chip. This device has just three leads two for 5V and GND and the third lead is connected directly to an analog input on the Arduino. - [Next Page](https://learn.adafruit.com/adafruit-arduino-lesson-12-lcd-displays-part-2/parts.md) ## Featured Products ### TMP36 - Analog Temperature sensor [TMP36 - Analog Temperature sensor](https://www.adafruit.com/product/165) Wide range, low power temperature sensor outputs an analog voltage that is proportional to the ambient temperature. To use, connect pin 1 (left) to power (between 2.7 and 5.5V), pin 3 (right) to ground, and pin 2 to analog in on your microcontroller. The voltage out is 0V at -50°C and... In Stock [Buy Now](https://www.adafruit.com/product/165) [Related Guides to the Product](https://learn.adafruit.com/products/165/guides) ### Standard LCD 16x2 + extras [Standard LCD 16x2 + extras](https://www.adafruit.com/product/181) Standard HD44780 LCDs are useful for creating standalone projects. - 16 characters wide, 2 rows - White text on blue background - Connection port is 0.1" pitch, single row for easy breadboarding and wiring - Pins are documented on the back of the LCD to assist... In Stock [Buy Now](https://www.adafruit.com/product/181) [Related Guides to the Product](https://learn.adafruit.com/products/181/guides) ### Photo cell (CdS photoresistor) [Photo cell (CdS photoresistor)](https://www.adafruit.com/product/161) CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When it's light, the resistance is about ~1KΩ, when dark it goes up to ~10KΩ. To use, connect one side of the photocell (either one, it's symmetric) to power... In Stock [Buy Now](https://www.adafruit.com/product/161) [Related Guides to the Product](https://learn.adafruit.com/products/161/guides) ### Premium Male/Male Jumper Wires - 40 x 6" (150mm) [Premium Male/Male Jumper Wires - 40 x 6" (150mm)](https://www.adafruit.com/product/758) Handy for making wire harnesses or jumpering between headers on PCB's. These premium jumper wires are 6" (150mm) long and come in a 'strip' of 40 (4 pieces of each of ten rainbow colors). They have 0.1" male header contacts on either end and fit cleanly next to each other... 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The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a Out of Stock [Buy Now](https://www.adafruit.com/product/50) [Related Guides to the Product](https://learn.adafruit.com/products/50/guides) ## Related Guides - [Deciphering Strange Arduino Code](https://learn.adafruit.com/deciphering-strange-arduino-code.md) - [Adafruit Optical Fingerprint Sensor](https://learn.adafruit.com/adafruit-optical-fingerprint-sensor.md) - [Line Following Zumo Robot Using Simulink](https://learn.adafruit.com/line-following-zumo-robot-programmed-with-simulink.md) - [Smart Cocktail Shaker](https://learn.adafruit.com/smart-cocktail-shaker.md) - [Multi-tasking the Arduino - Part 2](https://learn.adafruit.com/multi-tasking-the-arduino-part-2.md) - [Trellis 3D Printed Enclosure](https://learn.adafruit.com/trellis-3d-printed-enclosure.md) - [Arduino Lesson 11. LCD Displays - Part 1](https://learn.adafruit.com/adafruit-arduino-lesson-11-lcd-displays-1.md) - [Sending an SMS with Temboo](https://learn.adafruit.com/sending-an-sms-with-temboo.md) - [Using NeoPixels and Servos Together](https://learn.adafruit.com/neopixels-and-servos.md) - [Affordable HAL 9000 Replica](https://learn.adafruit.com/hal-9000-replica.md) - [1.8" TFT Display Breakout and Shield](https://learn.adafruit.com/1-8-tft-display.md) - [Silicone Robo-Tentacle](https://learn.adafruit.com/silicone-robo-tentacle.md) - [Adafruit Music Maker Shield](https://learn.adafruit.com/adafruit-music-maker-shield-vs1053-mp3-wav-wave-ogg-vorbis-player.md) - [Adafruit Ultimate GPS](https://learn.adafruit.com/adafruit-ultimate-gps.md) - [Skill Badge Requirements: Microcontrollers](https://learn.adafruit.com/skill-badge-requirements-microcontrollers.md)