arduino:displays_for_classic_arduinos:parallel_character_lcd_displays_and_classic_arduinos
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arduino:displays_for_classic_arduinos:parallel_character_lcd_displays_and_classic_arduinos [2018/01/29 23:38] – [Tests] mithat | arduino:displays_for_classic_arduinos:parallel_character_lcd_displays_and_classic_arduinos [2018/01/30 16:47] – [Summary evaluation] mithat | ||
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Character LCDs with parallel inputs are available all over the place. The most common formats are 16x2 and 20x4, but you can find other widths and heights as well. They' | Character LCDs with parallel inputs are available all over the place. The most common formats are 16x2 and 20x4, but you can find other widths and heights as well. They' | ||
- | There' | + | There' |
A second issue is that they consume a lot of pins. There are I2C adapters available for the parallel interface though, which you'll be able to read out in this wiki sooner or later. | A second issue is that they consume a lot of pins. There are I2C adapters available for the parallel interface though, which you'll be able to read out in this wiki sooner or later. | ||
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Arduino has a [[https:// | Arduino has a [[https:// | ||
- | I decided to get an idea of what the processing time and memory overhead using BigCrystal with a 20x4 display was as sort of an acid test. I used a 5V 16 Mhz Nano, and the display is probably an STN unit. The reported frame update time is around 14 msec and varies with the number of big characters being drawn. Memory use is 15% of program storage and 6% of dynamic memory. Because these numbers are so low, I didn't bother doing a test of the LiquidCrystal library | + | I decided to get an idea of what the processing time and memory overhead using BigCrystal with a 20x4 display was. I used a 5V 16 Mhz Nano, and the display is probably an STN unit. The reported frame update time is around 14 msec and varies with the number of big characters being drawn. Memory use is 15% of program storage and 6% of dynamic memory. Because these numbers are so low, I didn't bother doing a test of the LiquidCrystal library |
FIXME video | FIXME video |
arduino/displays_for_classic_arduinos/parallel_character_lcd_displays_and_classic_arduinos.txt · Last modified: 2019/11/15 15:59 by mithat