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Project Notes

#428 3x7/LRThreeDigitDemo

Driving the Boldport 3x7 display from a Cuttle (Arduino) and the LRThreeDigits library.

Build

Here’s a quick demo..

clip

Notes

LuckResistor published the LRThreeDigits library for driving the Boldport 3x7 with an Arduino or compatible.

The LRThreeDigitDemo.ino sketch is just a quick test drive of the library.

Using the Library

The main things to note is that the library:

  • uses Timer2 for display refresh
  • mandates the pin connections per the following table
Arduino Pin Project Pin
GND GND
Pin 2 Digit 1 Sink
Pin 3 Digit 2 Sink
Pin 4 Digit 3 Sink
Pin 5 Segment g
Pin 6 Segment f
Pin 7 Segment e
Pin 8 Segment d
Pin 9 Segment c
Pin 10 Segment b
Pin 11 Segment a

Construction

Breadboard

Schematic

Build

Credits and References

About LEAP#428 Boldport7-SegmentArduino
Project Source on GitHub Return to the LEAP Catalog

This page is a web-friendly rendering of my project notes shared in the LEAP GitHub repository.

LEAP is my personal collection of electronics projects, usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting (IMHO!).

The projects are usually inspired by things found wild on the net, or ideas from the sources such as:

Feel free to borrow liberally, and if you spot any issues do let me know. See the individual projects for credits where due. There are even now a few projects contributed by others - send your own over in a pull request if you would also like to add to this collection.