The Lisp Badge firmware has now been updated to Version 3, which adds the following improvements:
uLisp is now updated to uLisp AVR Version 3.3a, which includes the format function.
Three additional plotting extensions have been added: fill-screen, plot-pixel, and glyph-pixel.
The keyboard now supports entering “~” (Shift-ESC) and “%” (Shift-DEL) characters used by the format function.
The piezo speaker can now be used with the note function to play tunes.
For more information about these improvements see Lisp Badge.