Real Time Clock with Display Example

[hek]

Put together a new example inspired by @gregl for the RTC module.
Also added a display to show date, time and temperature.

http://www.mysensors.org/build/display

https://codebender.cc/sketch:48371

[gregl]

Nice Hek.
Can you explain the values here?
(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE)

I know the 0x27 is the i2c address - but the others are foreign to me, and i cant find the doco/wiki for that lib...or at least that version of the lib!

[korttoma]

I was thinking the same thing as @GREGL
I'm using the following to initialize my LCD:

LiquidCrystal_I2C lcd(0x27,20,4);
lcd.init();

Don't think I'm using the same Lib either.

[gregl]

I was just poking around on codebender and found the lib..but none of the examples use all these params.

IIRC ,I use a different lib...as my i2c lcd controllers are pretty old..byvac from memory.

[hek]

Found the new liquidcrystal library while searching my display Funduino/1602.

The parameters are:

addr, en,rw,rs,d4,d5,d6,d7,bl,blpol

https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads

Example:
http://jaredstemen.blogspot.se/2014/01/getting-funduino-1602-lcd-to-print.html

[korttoma]

Tried the lib out in my setup and it seems to be working just fine so I think I will use that one to so that I can be on the same page as @hek

[hek]

@korttoma

I has been checked in to master.

https://github.com/mysensors/Arduino/tree/master/libraries/LiquidCrystal

[bjornhallberg]

These OLED displays seem pretty cool also if the quality is ok and the library doesn't eat up too much space:
https://www.youtube.com/watch?v=mMiMNTv25Bw
A lot more information being displayed in a much smaller package. Price is similar to the 16x2 LCD and they run on 3.3-5V apparently. Available as I2C also.

[gregl]

Hey maybe i can use this with the microview http://forum.mysensors.org/topic/48/idea-s-microview/

[marceltrapman]

@bjornhallberg said:

These OLED displays seem pretty cool also if the quality is ok and the library doesn't eat up too much space:
https://www.youtube.com/watch?v=mMiMNTv25Bw
A lot more information being displayed in a much smaller package. Price is similar to the 16x2 LCD and they run on 3.3-5V apparently. Available as I2C also.

I have a couple of these (I2C) and they are great.
I have tried to use them together with a temp sensor but I failed doing so.
I was able to compile and upload the sketch but due to a lack of patience I did not investigate why it failed.
My gut feeling is that the problem was the use of too many string values...

[Rek]

I have a couple of these OLED displays on order, will see if I can get them working with the sensors.

[cadet]

@hek said in Real Time Clock with Display Example:

http://www.mysensors.org/build/display

Hi

Can you modify code for adding temp sensor to GW.
And may be display day of week.
Thank you.