Ralph S Bacon's instructables
- Ralph S Bacon commented on ludektalian's instructable Speed HeadUp Display
- Ralph S Bacon commented on Ralph S Bacon's instructable #9 Arduino and LED 7-segment Displays Using a MAX7219 - Part 1
It depends where you are in the world. If you can purchase from eBay then you are really spoiled for choice. Just search for MAX7219 and you will find hundreds of near-identical products. Go for a buyer that has a good feedback score. As a typical example (I am not endorsing this randomly chosen item: http://www.ebay.co.uk/itm/MAX7219-LED-Dot-matrix-8... )If you buy locally (or cannot access eBay) then expect to pay more (but you can also expect much faster delivery too!
View Instructable »Thanks for that supportive comment. I hope the next two parts are too!
- Ralph S Bacon commented on Ralph S Bacon's instructable #9 Arduino and LED 7-segment Displays Using a MAX7219 - Part 1View Instructable »
Hello! Parts 2 & 3 will be added to the Instructables site very soon (or you can jump the queue and watch them - and several dozen more - on YouTube, of course).We are at the mercy of the manufacturers when it comes to what type of digits are available. Now, there is nothing stopping you from wiring up a MAX7219 to an LED digit strip of your choice, but it's more work than I'm prepared to put in given the price of these units!
This is a great project and something I will definitely consider! My only suggestion would be to cover the display with red acrylic sheet (an A4 sheet costs about €3, used in theatre lighting) to improve the contrast (and hide the reflection of the actual unlit part of the display). Yes, I do like this a lot, without meaning to be patronising I'd like to say Well Done!