See how to make a 555 timer chip with a pulsing buzzer.
Parts:
555 timer chip
2x 4.7kohm resistor
100 uF capacitor
Pezio electric buzzer
Keep Your Connection Secure Without a Monthly Bill. Get a lifetime subscription to VPN Unlimited for all your devices with a one-time purchase from the new Gadget Hacks Shop, and watch Hulu or Netflix without regional restrictions, increase security when browsing on public networks, and more.
Other worthwhile deals to check out:
How To:
Hack your electricity meter
How To:
Hack a WiFi USB Adapter for Better Reception
How To:
Modify house clocks to run on solar power for five dollars
How To:
Make your own DIY film projector
How To:
Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore
How To:
Eavesdrop from a Distance with This DIY Parabolic "Spy" Microphone
How To:
10 Unique & Practical Ways to Repurpose Your Old Hard Disk Drives
How To:
Build a mini hovercraft with household items
How To:
Quick-N-Dirty Circuit Board Repair: How to Patch Faded or Corroded Traces with Pencil Lead
How To:
DIY Stick Welder from Old Microwave Parts
News:
Make your face paparazzi-invisible with infrared
How To:
Hack Smart Cards for satellite TVs
How To:
Make an Infrared Mask to Hide Your Face from Cameras
How To:
Make a Spot Welder for Cheap!
How To:
Light a light bulb with a potato battery
How To:
Build an analog light organ (a colorful sound-to-light circuit)
How To:
Hack a coin operated laundry machine
How To:
Build a low cost portable hamstick antenna
How To:
Hack a laser pointer into a burning laser
How To:
Hack Software & Run a Trial Program Forever
How To:
Hack your electricity meter
How To:
Modify house clocks to run on solar power for five dollars
How To:
Hack a WiFi USB Adapter for Better Reception
How To:
Make your own DIY film projector
How To:
Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore
How To:
Eavesdrop from a Distance with This DIY Parabolic "Spy" Microphone
How To:
10 Unique & Practical Ways to Repurpose Your Old Hard Disk Drives
How To:
Build a mini hovercraft with household items
How To:
Quick-N-Dirty Circuit Board Repair: How to Patch Faded or Corroded Traces with Pencil Lead
How To:
DIY Stick Welder from Old Microwave Parts
News:
Make your face paparazzi-invisible with infrared
How To:
Hack Smart Cards for satellite TVs
How To:
Make an Infrared Mask to Hide Your Face from Cameras
How To:
Make a Spot Welder for Cheap!
How To:
Light a light bulb with a potato battery
How To:
Build an analog light organ (a colorful sound-to-light circuit)
How To:
Hack a coin operated laundry machine
How To:
Build a low cost portable hamstick antenna
How To:
Hack a laser pointer into a burning laser
How To:
Make a Super Cheap One-Way Check Valve
Be the First to Comment
Share Your Thoughts