What is a VoiceBox? What does it do? Well, it is such a fun shield that converts serial commands into a voice of some kind of robot! It uses SpeakJet chip to do that.
Follow the following instructions: There are the 18-DIP SpeakJet IC and a two stage audio amplifier with a potentiometer to set the gain. You can connect a speaker directly to the 'SPK+/-' pins or headphones with the 3.5mm audio jack.
Controlling this SpeakJet can be done using either of these two methods:
• Serial line
• The eight event input lines which are connected to digital pins 5-12
A 3-way jumper allows you to connect either
• The software (D2)
• Tardware (D1) TX pin of the Arduino to the SpeakJet's serial input.
There's also a small prototyping area. Stackable headers are included in the package. The version without the extra plastic can be found in the related items below.
Product pictures and descriptions are of Sparkfun.com