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Attention! The product has been discontinued. Check other products in category. |
Description
Module with four 8-segment displays. It displays four digits along with points and some characters. In addition, in the center you can see the colon. Systems of this type are among the most popular indicators, they are very simple to use and small in size.
Outputs are goldpin connectors (raster 2.54 mm) for connecting the module with any development set or breadboard with wires.
Specification
- Supply voltage: from 3.3 V to 5 V
- The number of displays (digit): 4 + colon
- Common anode
- Backlight: red
- Module dimensions: 48 x 19 mm
Connection
It is a version with a common anode, so you must connect the power line VCC. Digits or characters are created by the inclusion of segments: from A to G or H (point). Management of the segments is carried out through the low state on some of the outputs.
PinsCTx are used for selecting the display, where x is the display number. For example, to attach thefirst display, you must specify the high state on D1. D2, D3 and D4 should remain at a low state. Through multiplexing, that is fast switching, you can display four numbers at once using the same control lines.
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The product is compatible with Arduino Online you can findsample programs for Arduino, the connection description is located below. This project displays are activated by low state, you must change the respective lines in the code. |
Example of connecting to Arduino
Module cooperates, in particular, with Arduino, below you can find connection examples:
|
Pin Arduino |
Pin display |
Description |
|---|---|---|
| 11 | CT1 | The inclusion of the display 1 is activated with high state. |
| 10 | CT2 | The inclusion of the display 2 is activated with high state |
| 9 | CT3 | The inclusion of the display 3 is activated with high state |
| 6 | CT4 | The inclusion of the display 4 is activated with high state |
| 3.3 V | VCC | Supply voltage: from 3.3 V to 5 V. |
| A1 | And | Segment A - turned on with low state. |
| 3 | B | Segment B - turned on with low state. |
| 4 | C | Segment C - turned on with low state. |
| 5 | D | Segment D - turned on with low state. |
| A0 | E | Segment E - turned on with low state. |
| 7 | F | Segment F - turned on with low state. |
| 8 | G | Segment G - turned on with low state. |
| 13 | H | Segment H - turned on with low state. |
| DOT | Segment DT (dot) turned on with low state. | |
| PT |
Segment PT (colon) -turned on with low state.: Point 1 works with the included display CT2. Point 2 works with the included display CT3. |
Useful links |
