Week -2
Door Bell

https://drive.google.com/file/d/1FMKZxordthfsLmbnX1VfpZNFxBOYe7Lc/view?usp=sharinghttps://drive.google.com/file/d/1FMKZxordthfsLmbnX1VfpZNFxBOYe7Lc/view?usp=sharing
2) thermistor to sense the temperature of a heater & turn on or turn off the fan
https://drive.google.com/file/d/1lHeVPwbxxkLqsSPpuer7p4c5mMhw8kkD/view?usp=sharing
