ZMALA-Project

Linking Modules

ESP8266 A9G

D1        ===>    TX
D2        ===>    RX
D4        ===>    Rest Pin

ESP8266 Buzzer

D5        ===>    Vcc
Gnd       ===>    Gnd

Buzzer Pattenrs with led indications

Battery Status

• Everey 1sec(-- . --) ===> Low Battery( < 30%) ===> Red
• Everey 0.5sec(-- . --) ===> Very Low Battery( < 20%) ===> Orange
• Good Battery ===> Green

Module Status And Location Status

• Every 0.5sec(-.-.-.-) ===> Oustside The Allowed Area ===> Yellow
• (0.5sec() .1sec) ===> Connected And ready ===> White