John demonstrates how to interface a vintage LED display with the Arduino. The display in question is a HP 5082-745 model, found in calculators, and other products from this manufacturer in the ’70s.
Using the display is very easy – kudos to the engineers at HP for making a simple design that could be reusable in many applications. The 5082-7415 is a common-cathode unit and wiring is very simple – there are the usual eight anodes for segments a~f and the decimal point, and the five cathodes.
Here’s some code with links to wiring for HDSP 2111s.
And Thanks. I have about 100 of these at my apt. =D
http://www.music-piracy.com/?p=659 Forgot the link. =P
Ahhh… the memories, I used hundreds of these making custom Motion Control Systems for the movies in the 70’s and 80’s. The birth of a new age….
Now that I’d love to see a blog post on.
Matt,
Maybe I’ll do that. A bit of Hollywood History….at
http://tropicarduino.blogspot.com.au/ coming soon!
Hi, nice display!
This display reminds me of a calculator my Dad had when I was growing up. I think it was the HP-65. He said it was pretty expensive… I wonder if that thing is still at my parents house, I would love to have it, now.
Go look for that HP-65, it will be worth a mint (and fun to use) if still working :)