This is a small tone selector with the ability to change the frequency by a potentiometer and to see the result on a 16×2 display. It also has an automatic testing mode at the beginning.
Featured Adafruit Product!
RGB backlight positive LCD 16×2 + extras – black on RGB: This is a fancy upgrade to standard 16×2 LCDs, instead of just having blue and white, or red and black, this LCD has black characters on a full color RGB-backlight background! That means you can change the background color to anything you want – red, green, blue, pink, white, purple yellow, teal, salmon, chartreuse, or just leave it off for a neutral background. This LCD is the most daylight readable character LCD we have and is very beautiful and easy to read no matter what color/brighness you have for the backlight. (read more)
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