Latest from Steve Hobley


Game Show Buttons

Game Show Buttons

12/18/2012

In this project, taken from Charles Platt’s book Make: Electronics, we’re going to breadboard a fairly complex circuit using 555...

Solar USB Charger

Solar USB Charger

12/18/2012

Charge up your USB devices with the power of the sun. By adding a small solar panel and two diodes...

Treasure Finder

Treasure Finder

12/18/2012

Who hasn’t dreamed about owning their own metal detector and searching for buried treasure, or at least a few dropped...

Wearable Light Organ

Wearable Light Organ

12/18/2012

This simple, wearable circuit uses an operational amplifier (or “op-amp”) chip to convert sound into light. An LM324 op-amp and...

555 Timer Ball Whacker

12/18/2012

This project uses a simple 555 timer chip and a feedback loop to control a servo-controlled wooden arm. Whenever an...

Alarm Bag

Alarm Bag

12/18/2012

This project uses simple electronics to create an alarm circuit for a shoulder bag. The key components are two 1/8″...

Light Theremin

Light Theremin

12/18/2012

Anyone who’s shivered in the dark at a scary movie or laughed at the unintentional cheese-ball of a bad sci-fi...

Whack-a-Mole Game

Whack-a-Mole Game

12/18/2012

Jim Chen designed an excellent electronic "Whack-a-Mole" game using 555 timers, LEDs, and bent-diode touch sensors, that you can build...

Laser Harp

Laser Harp

12/18/2012

I once saw someone playing music by breaking laser beams with his hands. I thought it was fake, but discovered...

Aircraft Band Receiver

Aircraft Band Receiver

04/16/2012

The FM radio band (88-108 MHz) lies just below the Civil Aviation Band (108-138 MHz), which is used for air...

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