Here are some projects I’ve created, click them to find out more.
Arduino GRANDE
Automatic Nerf Sentry Gun
Star Wars Legion Imperial Melody Discharger
Burrito Blaster Air Cannon
Laser Art Heist for Machine Project
WingShield Industries ScrewShield for Arduino
MintyBot
Unbored Water Blaster
Hydraulic Espresso Tamper
Ultrasonic Tape Measure
Physical App Launching Conveyor Belt
Florence Siphon Vacuum Coffee Brewing Apparatus
Internet Kill Switch
Mystery Box
Toaster Tea Brewer
Pole Camera Rig
Chornulieta Clock
Bike Noisemaker Exhaust
Atari Punk Recipe Box
Steam Powered Boiler Bot
Human Flag Pole
Glowing Wands
TSA Multitool
John Park 
Hi Sir! We would like to ask for your permission to use your project (and also to follow the steps or instructions given) about PIR sensor arduino alarm for our project. We assure that you will be acknowledged in our proposal. Thank you for your kind consideration, Sir.
Please do!