Central Colunm Activation

avishorp / TM1637

Arduino library for TM1637 (LED Driver)

GNU Lesser General Public License v3.0

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Central Colunm Activation #20

Closed RogerMito closed 6 years ago

RogerMito commented 7 years ago

Hello friends. First of all I would like to thank you for the wonderful work you have done. I am using a library developed by you on a personal project of a clock. However, I am not able to activate the central column of the display. I'm using version 1.1.0 of the library. I noticed that there is no implementation for the "point" method: display.point (POINT_ON); Display.point (POINT_OFF); can you help me?

Thank you.

avishorp commented 7 years ago

It depends on how you use the library:

If you're calculating the individual segment value on your own, you can use setSegments, and then the MSB bit is usually connected to the colon or to the decimal points.
If you're using showNumberDec, you can use the new showNumberDecEx which has control over those segments.

Sn3b commented 7 years ago

How do you use showNumberDecEx to display the central column?

avishorp commented 7 years ago

showNumberDecEx has an extra argument that contains a bitmask that controls the 8'th segment of each digit. This one is usually connected to the colon mark or to the decimal points. Please have a look at the test code.

ybaransky commented 6 years ago

Is it really either the colon or the decimal point, never both? It seems the LED PCB part I am using connects only to the colon, even though the image shows the colon and the decimal points lit. Can someone post a 4-digit part hardware part that does the decimal point? The part I am using is https://www.ebay.com/itm/0-56-inch-TM1637-4-Bits-LED-Clock-Tube-Display-for-Arduino-Red-Blue-Green-White/112674024638?hash=item1a3be52cbe:m:mU29WDo2Sfcy3aGBDVrYUNA thx

gerrydelasel commented 6 years ago

That display has a decimal point for each digit which can be addressed in the usual way (0bxGFEDCBA where x is the decimal point). But the colon is separately controlled and will probably need a dedicated function.