Session 2: Review of Security and Monitoring Module Functions in Raspberry Pi - Part One:

1. Relay Control
https://gist.github.com/cyrusmeh/436b...
2. PIR Module
https://gist.github.com/cyrusmeh/f0d0...
3. Ultrasonic Module
https://gist.github.com/cyrusmeh/332d...
4. DHT22 Module
https://gist.github.com/cyrusmeh/0437...
https://gist.github.com/cyrusmeh/e333...
5. 7-Segment Display
https://gist.github.com/cyrusmeh/a521...