Hacked Gadgets Forum

October 28, 2011

DIY Kitt like Larsen Scanner

at 2:33 pm. Filed under DIY Hacks, Electronic Hacks


If you are looking for a fun LED project why not try your hand at building a Larsen Scanner. You might not recognize the name but you have seen them before. Remember the sweeping lights on the front of the Knight Rider car called Kitt? The project will take you through the process step by step and has all the details you need to make your own.

“In order to get the fading effect I need to use Pulse-Width Modulation. This is a fancy way of saying that we need to turn the LEDs on and off very fast. The percentage of on and off time account for different levels of brightness. I’m going to use an internal timer for this. Here’s how I plan to make it work:

  1. Timer overflows and Interrupt Service Routine starts
  2. All outputs are updated from buffer set during the last interrupt
  3. Software counter is incremented.
  4. Buffer is set for next interrupt by comparing the software counter to each LED’s PWM value. If the counter is higher than that value, the LED should be off, otherwise it should be on.”


Below reviews, comments by and a total retin . Consumer about medication side drug interactions...

Related Posts

Larsen Scanner used to Indicate Computer Status
Scanner Lamp
PCB Pictures with Scanner
Homemade Round Object 3D Scanner made from Flatbed Scanner
Russian VFD Clock
HP Scanjet 4C Keytar
RGB Lamp made from an old Scanner
ScanJet Music Hack



One Response to “DIY Kitt like Larsen Scanner”

  1. RDurgin Says:

    Now all you need is a “Turbo Boost” button.

Leave a Reply

Internal Links:



Hacked Gadgets

Site Sponsors:

Nuts and Volts Electronic Labs Trossen Robotics Free Technical Publications Blue LED


Recent Comments:

More RSS Feed Options

Site Sponsors:


Interesting Sites: