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1  Using Arduino / LEDs and Multiplexing / Re: TM1640 Library defect? on: February 09, 2013, 09:31:47 am
John,

You are soo right. I just updated and its running now. Thank you.

Greetings from Hanover, Germany
2  Using Arduino / LEDs and Multiplexing / TM1640 Library defect? on: February 07, 2013, 10:57:00 am
Hi there, I'm new with the Arduino. I want to display via this TM1640, but when I compile the example, the compiler says:
C:\Program Files\arduino-0018\libraries\TM1638\/TM16XX.h:58: error: 'String' has not been declared

What do I do wrong? Same happens with other Versions of the same lib.

Can please somebody help me? I haven't programmed for a longer time so I'm not sure what happens here.
3  Using Arduino / LEDs and Multiplexing / Re: TM1640 based, 16 digit display (dealextreme) on: February 07, 2013, 10:54:37 am
Hi there, I'm new with the Arduino. I want to display via this TH1640, but when I compile the example, the compiler says:
C:\Program Files\arduino-0018\libraries\TM1638\/TM16XX.h:58: error: 'String' has not been declared

What do I do wrong? Same happens with other Versions of the same lib.

Can please somebody help me? I haven't programmed for a longer time so I'm not sure what happens here.


Anyone know about the TM1640 chip? I've ordered one, and i'm going to try and figure it out.
http://www.dealextreme.com/p/jy-mcu-16x-digital-tube-yellow-led-module-104311

Here is all the reference info I could find:


Schematic: http://ljy99731.13.dns222.net/download/LM1640_sch.pdf
Datasheet: http://ljy99731.13.dns222.net/download/tm1640.pdf


Is it similar to the TM1638, for which an arduino library has already been built?
http://code.google.com/p/tm1638-library/

I've contacted the author of the arduino TM1638 library, and he's also got one of these units on order, to try and figure out.
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