249 Adafruit

Adafruit Data Logger Shield Created by Bill Earl Table of Contents Overview 5 Features: 5 Installing the Headers 6 Assembly with male headers 7 Cut the headers to length: 8 Position the headers: 8 Position the shield: 8 And solder 9 Assembly with Stacking Headers: 11 Position the headers: 11 And solder 12 Place the 2x3 female header on to the Arduino/Metro 14 Shield Overview 16 SD Card 17 Real Time Clock 17 3.3V Power Supply 18 User LEDs 18 Prototyping Area 18 Breakout Pads 19 Wiring & Config 20 Which version do I have 21 Older Shield Pinouts 21 Rev B Shield Pinouts 22 Older Datalogger Shield Leonardo & Mega Library 24 Using the SD Library with the Mega and Leonardo 26 cardinfo 26 Using the Real Time Clock 26 What is a Real Time Clock 26 Battery Backup 28 Talking to the RTC 29 First RTC test 30 Setting the time 31 Reading the time 32 Using the SD Card 34 Formatting under Windows/Mac 35 Get Card Info 35 Light and Temperature Logger 40 Introduction 40 Build It 41 Items you ll need: 41 The sensors 42 Wiring it up 43 Position the sensors 44 Adafruit Industries Page 2 of 68