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Updated tutorial & library! I2C/SPI backpack guide

Lcds   Displays I2Cconnect T

We’ve been hard at work doing a lot of upkeep on our Arduino libraries & tutorials. One of the ones we did today was the I2C/SPI backpack guide
https://learn.adafruit.com/i2c-spi-lcd-backpack

and the library that goes with it
https://github.com/adafruit/LiquidCrystal

We updated LiquidCrystal to Adafruit_LiquidCrystal so it doesn’t conflict with the built in LiquidCrystal. If you’re using ATSAMD21 or Trinket/Gemma, this library works great now, just grab the latest Adafruit AVR Boards package for Trinket Wire support


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