MAKE: Blog: Parallel port oscilloscope

Parallel port oscilloscope

Make 738
Here's a pretty nice parallel port oscilloscope -

This oscilloscope uses the SPP or EPP parallel port (LPT1) for reading the data from ADC. If your LPT1 is an ECP then the program automatically switches the LPT1 in byte mode (normal mode). BUT, not all parallel ports (LPT ports) are bidirectional. "Bidirectional" means, that except outputing data, the port can also read the data. How to determine if your LPT1 port is a bidirectional one? Start the LPTscope program and on the program menu select: "Bidirectional capabilities testing" then follow the given instructions.

LPTScope hardware - Link & cache.

Related:

Comments

Oldest comments listed first.

Subscribe to MAKE Magazine!

Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.

$34.95 / 1 year
(4 Quarterly Issues)

Subscribe now

Void your warranty, violate a user agreement, fry a circuit, blow a fuse, poke an eye out... Welcome to the Make Blog!

Features and more @ MAKE!

Stop by the Maker Shed store and check out THE place for open source hardware, Arduino & Arduino accessories, electronic kits, science kits, smart stuff for kids, back issues of MAKE & CRAFT, box sets, books, robots, kits from Japan and more.

Add MAKE to iGoogle - GoogleGoogle.
Add MAKE to your RSS reader - Real simple.
Add MAKE on Twitter.
Add MAKE on FriendFeed & the MAKE room.

Why advertise on MAKE?
Read what folks are saying about us!

Click here to advertise on MAKE!

Makezine authors!

Suggest a Site!

Phillip Torrone
Senior Editor
Tel: 707-827-7311
Twitter / AIM

Gareth Branwyn
Jonah Brucker-Cohen
Collin Cunningham
Marc de Vinck
Kip Kay
Luke Iseman
Patti Schiendelman
Becky Stern
Mike Dixon
Peter Horvath(intern)

Current Podcast

The Best of Maker Faire Austin 2008 Check out all the fun and excitement at this year's Maker Faire in Austin, Texas. People from all over the world came to experience this amazing event. Take a look at some of the highlights and make plans to... More...

Get the Make blog sent via email

Enter your email to receive the Make blog each day:

WOW! Thanks to everyone involved with Maker Faire Bay Area and Maker Faire Austin in 2008: attendees, makers, exhibitors, sponsors, volunteers, and crew...it was an AMAZING year! Over 1,000 Makers and 87,000+ attendees total! Be sure to check out the photos @ Flickr, and our Maker Faire posts for all the action! Check back for dates for 2009 soon!