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arduino:displays_for_classic_arduinos:nokia_5110_displays_and_classic_arduinos [2018/01/28 06:24] mithatarduino:displays_for_classic_arduinos:nokia_5110_displays_and_classic_arduinos [2018/01/28 06:25] – [Summary opinions] mithat
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   * The displays are sourced either as surplus or have been harvested from old phones. You can't be certain what you'll get, but whatever you get will probably not be pristine.   * The displays are sourced either as surplus or have been harvested from old phones. You can't be certain what you'll get, but whatever you get will probably not be pristine.
   * The main electrical contact between the display and the PCB is through a compressible foam material that was once pretty cool s***. The main issue this presents is that small shifts in pressure on the display housing seem to muck up the connections --- at least they did on my sample. The contrast control in particular seems to be sensitive to housing pressure. Nokia obviously figured out how to work with this interface, but board suppliers might be missing some important know how here.   * The main electrical contact between the display and the PCB is through a compressible foam material that was once pretty cool s***. The main issue this presents is that small shifts in pressure on the display housing seem to muck up the connections --- at least they did on my sample. The contrast control in particular seems to be sensitive to housing pressure. Nokia obviously figured out how to work with this interface, but board suppliers might be missing some important know how here.
-  * The LCD contrast is set in software. At first this seems like something that might be cool. But if you're going to build more than one of whatever you're building, it means you'll have to tweak the code for each one you build or write software that allows the contrast to set at runtime. And save that to persistent memory. That's not a small amount of overhead.+  * The LCD contrast is set in software. At first this seems like something that might be cool. But if you're going to build more than one of whatever you're building, it means you'll have to tweak the code for each one you build or write software that lets the contrast be set at runtime. And save that to persistent memory. That's not a small amount of overhead.
  
 The order of the pins on these will vary from supplier to supplier. One of the best sources of information on these displays is SparkFun's [[https://learn.sparkfun.com/tutorials/graphic-lcd-hookup-guide | Graphic LCD Hookup Guide]]. The order of the pins on these will vary from supplier to supplier. One of the best sources of information on these displays is SparkFun's [[https://learn.sparkfun.com/tutorials/graphic-lcd-hookup-guide | Graphic LCD Hookup Guide]].
arduino/displays_for_classic_arduinos/nokia_5110_displays_and_classic_arduinos.txt · Last modified: 2018/01/28 21:36 by mithat

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