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Parameters
- Supply voltage: 3.3 V to 5 V
- Number of displays (digits): 4
- Common anode
- Backlighting: red
- Module dimensions : 21.5 x 33.5 mm
Description
The module with a quadruple 8-segment display allows you to display four digits with dots and some letters. This type of arrangement is one of the most popular indicators, characterized by simple operation and small size.
The outputs are goldpin connectors (raster 2.54) allowing the module to be connected to anystarter kitorcontact plateusingwires.There is also availablea librarythat makes the display easy to use for Arduino users.
Support .
This is a version with a common anode, so connect the VCC power line. Numbers or letters are created by activating the corresponding segments: A to G or DP (dot). The control of the segments is done by entering a low state on the individual outputs (figure below).
The drawing shows the module outputs (left)
and the segment markings (right).
The display is selected by means of Dx pins where x stands for the display number. For example, to switch on the display first, the low state on D1 must be given. D2, D3 and D4 should remain in the high state (VCC). Through multiplexing, i.e. fast switching, four digits can be displayed simultaneously using the same control lines.
Useful links
- Arduino library- a code to facilitate the use of the module for Arduino users
