Super loud security alarm

Step 4 Make all the connections & add the RGB LED

Here's how everything is connected to the carrier board/BS2:

Emic TTS Module:

• VCC goes to VCC (+)
• GND goes to GND (-)
• SP+ and SP- go to an 8ohm speaker or an external amplifier
• RESET goes to pin4
• BUSY goes to pin3
• SOUT goes to pin2
• SIN goes to pin1

PIR Sensor:

• VCC and GND go to + and - respectively
• The pin labeled OUT goes to pin0

Now, for the RGB LED (Red-Green-Blue LED). The one I used was a common ANODE, meaning that there is one longer pin that connects to +, and to light one of the colors, you bring that lead LOW (bring it to GND).

• RED goes to pin9
• BLUE goes to pin8
• GREEN goes to pin7
• The common anode (+; it's the longest lead) connects to a 200ohm resistor, which goes to +5V (VCC)

This acts as an indicator for the alarm.

And last but not least, put a wire in one of the two pin5 sockets, and connect the other end to the same row as the 'SP+' output on the Emic TTS. This is so you don't have to have two different audio output devices (speaker, piezo, amp) for the beeps and the verbal messages. The Emic TTS module must have some sort of diode or protection from the voltage coming from the BS2 when it (the BS2) is doing a FREQOUT command. I have used this setup for a long time and it hasn't caused any trouble. Now as the audio output, you should either build a simple amp (with a LM741 or an LM386) or find a small battery-powered one to use for the audio and alarm. Connect this to the SP+ and SP- rows on the mini breadboard, and you're good to go.

Because of the simplicity of these connections, I'm not including a schematic. If anyone wants one, let me know