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digispark:tutorials:lcd [2012/12/18 23:39]
digistump created
digispark:tutorials:lcd [2016/06/09 12:03] (current)
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 Soldering Basics (http://​www.sparkfun.com/​tutorials/​106) and Soldering Crash Course from the folks at Sparkfun (http://​www.sparkfun.com/​tutorials/​354). Soldering Basics (http://​www.sparkfun.com/​tutorials/​106) and Soldering Crash Course from the folks at Sparkfun (http://​www.sparkfun.com/​tutorials/​354).
 How to solder from the Curious Inventor: http://​store.curiousinventor.com/​guides/​How_to_Solder How to solder from the Curious Inventor: http://​store.curiousinventor.com/​guides/​How_to_Solder
 +
 +Adafruit has this excellent guide that starts with the tools needed and then shows detailed pictures, including some of the common problems that beginners experience (http://​learn.adafruit.com/​adafruit-guide-excellent-soldering)
  
 **We assume for these assembly instructions that you know the basics of thru-hole soldering. If you don't check out the links above, these boards are very easy to solder - we promise!** **We assume for these assembly instructions that you know the basics of thru-hole soldering. If you don't check out the links above, these boards are very easy to solder - we promise!**
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 =====Assembly:​===== =====Assembly:​=====
  
-**NOTE:** If you have a "Model B" board you may need to cut the trace to the onboard LED before using any I2C devices - Find out how to tell which board you have and what to do here: [[digispark:​tutorials:​modelbi2c]]+**NOTE:** If you have a "Model B" board you may need to cut the trace to the onboard LED before using any I²C devices - Find out how to tell which board you have and what to do in [[digispark:​tutorials:​modelbi2c]].
  
  
-Empty kit bag (or if using a raw PCB, aquire ​parts) and verify contents. ​+Empty kit bag (or if using a raw PCB, acquire ​parts) and verify contents. ​
 **Note for Kickstarter Backers and Pre-orders:​** Headers are not included in each kit bag, but the entire order came with more than enough headers for all kits. **Note for Kickstarter Backers and Pre-orders:​** Headers are not included in each kit bag, but the entire order came with more than enough headers for all kits.
  
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 Connect the LCD module to the board using the included cable, ensure that the connection at the board match up with the connection at the LCD - the black wire should be connect to the ground pin on each of them. Connect the LCD module to the board using the included cable, ensure that the connection at the board match up with the connection at the LCD - the black wire should be connect to the ground pin on each of them.
- 
  
 [[https://​s3.amazonaws.com/​digispark/​images/​m/​lcd5.jpg|{{https://​s3.amazonaws.com/​digispark/​images/​t/​lcd5.jpg}}]] [[https://​s3.amazonaws.com/​digispark/​images/​m/​lcd5.jpg|{{https://​s3.amazonaws.com/​digispark/​images/​t/​lcd5.jpg}}]]
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 [[https://​s3.amazonaws.com/​digispark/​images/​m/​lcd6.jpg|{{https://​s3.amazonaws.com/​digispark/​images/​t/​lcd6.jpg}}]] [[https://​s3.amazonaws.com/​digispark/​images/​m/​lcd6.jpg|{{https://​s3.amazonaws.com/​digispark/​images/​t/​lcd6.jpg}}]]
 +
 +**NOTE:** If your back light won't turn on check that the jumper is present on the back of the LCD screen on the pins labeled LED - if not you can bend and solder these pins together. ​
  
 =====Programming:​===== =====Programming:​=====
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 Digispark P0 -> SDA Digispark P0 -> SDA
-Digispark ​P3 -> SCL+ 
 +Digispark ​P2 -> SCL
  
 The I2C Address is 0x27 The I2C Address is 0x27
  
 Please refer to the LCD example in the Digispark LCD library included with the Digispark Arduino Addon. Please refer to the LCD example in the Digispark LCD library included with the Digispark Arduino Addon.
 +
 +Also see [[digispark:​tutorials:​usb2lcd|USB2LCD]]
 +
 +**Nothing appears on my LCD:**
 +When the Digispark powers up the LCD should light up right away and show some dark boxes on the top line for about 5 seconds. ​ If it lights up but there are no dark boxes try adjusting the contrast - the blue box with the phillips head thing on the back of the screen.
 +
 +After 5 seconds the boxes should disappear and say Digispark! (if using the BasicUsage LCD example) instead - if they aren't disappearing this could also be a contrast issue - try adjusting it the other direction.
digispark/tutorials/lcd.1355902768.txt.gz · Last modified: 2012/12/18 23:39 by digistump