dauntless89
Well-known member
I'm using several of these types of character LCDs in various pieces of gadgetry:
https://www.adafruit.com/product/198
I like them because they are inexpensive, easy, and a useful size. The one issue I have is the slow effective update rate. I've found that attempting to draw to them faster than about 4hz renders the updating characters essentially unreadable, particularly if the value is changing at such a rate that a character is being updated every refresh. I've experimented with controlling them using various breakouts and backpacks over SPI and I2C with various speeds. Is this just a limitation of the technology in the screens, or is there a way to optimize them for faster updating?
https://www.adafruit.com/product/198
I like them because they are inexpensive, easy, and a useful size. The one issue I have is the slow effective update rate. I've found that attempting to draw to them faster than about 4hz renders the updating characters essentially unreadable, particularly if the value is changing at such a rate that a character is being updated every refresh. I've experimented with controlling them using various breakouts and backpacks over SPI and I2C with various speeds. Is this just a limitation of the technology in the screens, or is there a way to optimize them for faster updating?