Smoke detector sensor from Arduino Uno and Arduino mega.

Material-
1-arduino Uno, Arduino mega , link- REES52 Arduino Uno R3 With Usb Cable

2- MQ2 gas sensor, link-Robotbanao MQ2 ARDUINO COMPATIBLE GAS SENSOR, METHANE, BUTANE, LPG, SMOKE Electronic Components Electronic Hobby Kit

3 - Buzzer, link-OSM Indicator Buzzer Tin Tin Automotive Electronic Hobby Kit

4- jumper wire, link-ePro Labs 120 Pieces Jumper Wire Set 40 M-M + 40 M-F + 40 F-F Wires

code link---

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