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DS1302 / DS1620 Serial LCD Demo — Parallax Forums

DS1302 / DS1620 Serial LCD Demo

Chris SavageChris Savage Parallax EngineeringPosts: 14,406
edited 2015-06-29 02:40 in BASIC Stamp
I'm posting this for a customer who asked for a minimal example of the time from a DS1302 and the temperature from a DS1620 being displayed on a Parallax 4x20 Serial LCD Display. I already had example code for displaying the Day, Date and Temperature on a 2x16 Display in my Binary / Digital Clock Project. In this project the time was displayed on both a Binary and a Digital LED display. The LCD Time Display routines were harvested from my Digital Thermostat Project and modified to use here on a 4x20 LCD.

To use this program download/run DS1302_Demo.bs2 and set the date/time, then download/run Clock_Temp.bs2 and the DS1302 will still have retained the date/time information. See schematic for connection information.

IMG_20130422_140550_454.jpg
IMG_20130422_140600_164.jpg

Here is the Board of Education wired up with the DS1302 and DS1620. The 4x20 LCD is plugged into P15 via the servo headers. Because of this the power switch must be in position 2 for the display to work. If you have any questions on this particular application please reply to this thread rather than e-mail. Thanks.

Comments

  • davejamesdavejames Posts: 4,046
    edited 2013-04-22 15:56
    ...thanks man - I was (for really truly) just getting to the point of wiring up the same thing!
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2013-04-22 20:45
    The elements are common to many projects. For a whole year I found myself putting a DS1302 into every project, if not for the timekeeping, for the battery-backed RAM. Anyway, enjoy!
  • wperkowperko Posts: 66
    edited 2015-06-28 18:43
    I'm posting this for a customer who asked for a minimal example of the time from a DS1302 and the temperature from a DS1620 being displayed on a Parallax 4x20 Serial LCD Display. I already had example code for displaying the Day, Date and Temperature on a 2x16 Display in my Binary / Digital Clock Project. In this project the time was displayed on both a Binary and a Digital LED display. The LCD Time Display routines were harvested from my Digital Thermostat Project and modified to use here on a 4x20 LCD.

    To use this program download/run DS1302_Demo.bs2 and set the date/time, then download/run Clock_Temp.bs2 and the DS1302 will still have retained the date/time information. See schematic for connection information.

    IMG_20130422_140550_454.jpg
    IMG_20130422_140600_164.jpg

    Here is the Board of Education wired up with the DS1302 and DS1620. The 4x20 LCD is plugged into P15 via the servo headers. Because of this the power switch must be in position 2 for the display to work. If you have any questions on this particular application please reply to this thread rather than e-mail. Thanks.


    Hi,

    This is one of several failed links to other pages or files ...

    Digital Thermostat Project

    I wish Parallax would keep these links active ... same for the posters as it just frustrates people looking for simple solutions to get projects off the ground ...
  • PublisonPublison Posts: 12,366
    edited 2015-06-29 02:40
    wperko wrote: »
    Hi,

    This is one of several failed links to other pages or files ...

    Digital Thermostat Project

    I wish Parallax would keep these links active ... same for the posters as it just frustrates people looking for simple solutions to get projects off the ground ...

    In this case, Parallax does not have control over that link. It originally pointed to Chris' site, which he is in the process of moving.
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