alcohol gas smoke sensor / simple electronics project using mq2 / hw battery / 7tech projects
7techprojects simple electronics project using mq2 gas sensor without arduino
components need:-
mq2 sensor
buzzer
resistor 1k ohm, 470 ohm
led light
9v battery
connecting needles
7805 regulator
bc 547 transistor
simple electronics projects for students
use as a security alarm
including circuit daigram
you can make at home
#7techprojects #electronics #simplecircuit #security #sensor #projects #hwbattery #hw
#ledlights #scinceproject