The
BASIC Stamp has two commands to generate sounds: DTMFOUT and FREQOUT.To make the most of these commands an audio amplifier circuit should be
used.The Audio Amplifier AppMod
makes it easy and is a great way to add sound output to your BOE-Bot or Toddler.
Features
125
milliwatt amplifier
Adjustable
volume control
Built-in
speaker
Selectable
external speaker connection
Parallax
standard AppMod format – plugs right in to a Board of Education
The
Audio Amplifier AppMod employs an industry-standard LM386 audio amplifier.
Raw audio output is taken from BASIC Stamp pin 10 and filtered prior to
amplification; this converts the pulse-width modulation output of the BASIC
Stamp to sinusoidal waves for the best audio quality. The amplified signal
is fed to an onboard 8 ohm speaker. You may connect an external speaker
for even better quality sound and volume.
