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greiman / SSD1306Ascii

Text only Arduino Library for SSD1306 OLED displays
MIT License
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lcdnums fonts are missing "space" in character set #74

Closed gitterman closed 3 years ago

gitterman commented 3 years ago

Trying to print right adjusted numbers with the lcdnums fonts is quite difficult as there is no "space" i.e. "blank" character in the set.

greiman commented 3 years ago

Space is not missing. Fonts are required to be a contiguous set of characters by the glcd font standard. Here is a comment from the creator of the font.

This font is not a complete character set. The font only contains the characters: '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '9', ':'

gitterman commented 3 years ago

I understand the issue and for this I have modified the lcdnums14x24 font to contain 10 dummy characters so that I can reach the space at 0x20. This makes the font slightly larger but allows simpler coding. I use your great library to show the weight on a DIY scale and I convert the float from the HX711 module with dtostrf( weight, 7, 1, strBuf ) so that I can use overwriting at a fixed position which gives me the least flicker on the display. Without the 'space' character I would use much more code to get the display digits right justified.