I will be documenting that device very soon, but we wanted to show how I created these custom symbols. The font that we will create is going to be an 18 point monospace symbol font designed to work with the FreeMono18pt font supplied with the Adafruit GFX library. All libraries based on the Adafruit GFX engine are supported. A sensable sensor for Pressure, Temperature, and Humidity more RAM (about 512 bytes for the 128x32 pixel canvas shown above), so it’s not always practical on AVR boards with only 2K. We are going to create a font that uses 0-31 as well as 127 and upwards. It might even require converting multiple fonts just to gather up everything I wanted.I needed to create a custom symbol font that would display media controls such as rewind, fast-forward, play, pause, stop as well as arrow keys in eight directions and some other custom designs such as a Bluetooth or a power button. That free monospace font defines characters from 32-126. The Adafruit GFX library has a number of standard mono and proportional space fonts of various sizes but sometimes you need special symbols that aren't in the standard ASCII character set such as media player symbols like play, fast-forward, rewind or perhaps arrows and other symbol items. This is a finite resource (about 32K max on an Arduino Uno for font data and Inside these .h files are several data structures, including one main font structure which will usually have the same name as the font file (minus the .h). More recent versions of the Adafruit GFX library offer the ability to use alternate fonts besides the one standard fixed-size and -spaced face that’s built in. This guide was first published on Jul 16, 2019. 'fontconvert' folder contains a command-line tool for converting TTF fonts to Adafruit_GFX header format.

There is a mono space font similar to Courier, a Sans Serif similar to Arial or Helvetica, and a Serif font similar to Times. Even though I have several Raspberry Pi units sitting around that is still beyond my particular skill set.Even if I could compile and run the utility, I would have to search for a type font to be converted that contained the symbols I wanted. It shows items like fast-forward and rewind and other typical media controls symbols.Here are some more screen grabs showing a mouse control page and another page which implements an entire board including function keys along the bottom of the screen.I will describe the system I used and provide you with the sample sketch so that you could use my custom symbols or adapt symbols of your own.This learning guide presumes that you are somewhat familiar with the Adafruit GFX library and how to use custom fonts with that library. TFT FeatherWing - 2.4" 320x240 Touchscreen For All FeathersAdafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for FeathersAdafruit PyGamer for MakeCode Arcade, CircuitPython or Arduino updated on Jul 29, 2012.

U8g2_for_Adafruit_GFX connects to an existing Adafruit Library and adds support for U8g2 fonts to all Adafruit GFX based libraries.  character-drawing function just isn’t set up to render that way (it would be prohibitive in both memory and speed on AVRs, which are still supported by the library). To select a font for subsequent graphics operations, use the setFont() function, passing the Subsequent calls to tft.print() will now use this font. Not wanting to break compatibility with existing code, the “classic” font continues to behave as before.For example, whereas the cursor position when printing with the classic font identified the When switching between built-in and custom fonts, the library will automatically shift the cursor position up or down 6 pixels as needed to continue along the same baseline.getTextBounds expects a string, a starting cursor X&Y position (the current cursor position will not be altered), and addresses of two signed and two unsigned 16-bit integers. The Adafruit_GFX library can be installed using the Arduino Library Manager…this is the preferred and modern way. Easily add 2.13" of monochrome E-Ink goodness to your Raspberry Pi! For example:Each font takes up a bit of program space; larger fonts typically require more room. More recent versions of the Adafruit GFX library offer the ability to use alternate fonts besides the one standard fixed-size and -spaced face that’s built in. ), font size in points (currently 9, 12, 18 and 24 point sizes are provided) and “7b” to indicate that these contain 7-bit characters (ASCII codes “ ” through “~”); After #including the Adafruit_GFX and display-specific libraries, include the font file(s) you plan to use in your sketch. followed by the style (“Bold”, “Oblique”, none, etc. Several alternate fonts are included, plus there’s the ability to add new ones.Located inside the “Fonts” folder inside Adafruit_GFX, the included files (as of this writing) are:Each filename starts with the face name (“FreeMono”, “FreeSerif”, etc.) This page (Using Fonts) was last updated on Aug 20, 2020. It should work on many Linux- or UNIX-like systems (Raspberry Pi, Mac OS X, maybe Cygwin for Windows, among others).The GNU FreeFont files are not included in the library repository The resulting .h file can be copied to the Adafruit_GFX/Fonts folder, or you can import the file as a new tab in your Arduino sketch using the Sketch→Add File… command.If in the Fonts folder, use this syntax when #including the file:You have been successfully subscribed to the Notification List for this product and will therefore receive an e-mail from us when it is back in stock!For security reasons, an e-mail has been sent to you acknowledging your subscription. To use a font in your Arduino sketch, #include the corresponding .h file and pass address of GFXfont struct to setFont(). A pocket-sized thermal imager powered by CircuitPython!