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  • Author Author: tariq.ahmad
  • Date Created: Date Created
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IoT Arduino NTP World Clock with SPI Display -- Episode 476

 

I work with people in many different time zones, and have always wanted an ‘at a glance’ world clock so I can see what time it is in their time zone. But I want mine to be configurable and synchronized with NTP, so I am going to build it!

Supplemental Content:

Bill of Material:

 

Product Name Manufacturer Quantity Buy Kit
ARDUINO NANO 33 IOT DEV BRD, ARM CORTEX-M0+ MCU ARDUINO 1 Buy Now
VISHAY 7 Segment LED Display, Multiplex Mode, Green, 20 mA, 2 V, 4 mcd, 4, 10 mm VISHAY 2 Buy Now
ADAFRUIT Add-On Board, PiTFT Plus Raspberry Pi HAT, 3.5" TFT Screen, 480 x 320, Capacitive Touchscreen ADAFRUIT 1 Buy Now
TRIPP-LITE USB Cable, Type A Plug to Micro Type B Plug, 3 m, 10 ft, USB 2.0, Black TRIPP-LITE 1 Buy Now
BOURNS Rotary Encoder, Mechanical, Incremental, 24 PPR, 24 Detents, Vertical, With Momentary Push Switch BOURNS 1 Buy Now
LED DISPLAY DRIVER, 8 DIGIT, DIP-24 MAXIM INTEGRATED 1 Buy Now

 

Additional Parts:

 

Product Name

Small Proto board

10kohm Resistor
Attachments:
NTPWorldClock_Resources.zip
Kaleb_013-STL-Files.zip
element14 presents
IoT Arduino NTP World Clock with SPI Display

element14 presents  |  About Kaleb |  Project Videos

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  • Very nice, Kaleb!  I like the "why buy one when you can build it" philosophy!!  Did you consider adding AM/PM indicators for the two external displays?  It looks like there might be room on the associated information areas on the TFT.  Also, I wondered about adding some functionality using the touch-screen capabilities already present in the TFT.  Maybe a single tap on one of the timezones moves it to the top external display, and a double tap moves it to the bottom display.  It would require significantly more programming, I guess.  The possibilities, though, are plentiful!

     

    Thanks for sharing!  You've inspired me to build this project!!

     

    Jennifer

  • in reply to jenniferl

    Thank you Jennifer!

     

    That is a good idea for the TFT, One of the reasons I did not add any TFT functionality, was that I could not think of a great use for it since the encoder did everything I needed. It could also take you to the TZ selection screen in context to change it. Also, that would require a lot more code, hah

     

    That is awesome! If you run into anything or have questions please feel free to ask away here on this thread, I will keep an eye on it. Key tip: Make sure you get the same IC and 7seg displays. I will also see about getting a schematic together to post. Good luck!

     

    -Kaleb

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  • in reply to jenniferl

    Thank you Jennifer!

     

    That is a good idea for the TFT, One of the reasons I did not add any TFT functionality, was that I could not think of a great use for it since the encoder did everything I needed. It could also take you to the TZ selection screen in context to change it. Also, that would require a lot more code, hah

     

    That is awesome! If you run into anything or have questions please feel free to ask away here on this thread, I will keep an eye on it. Key tip: Make sure you get the same IC and 7seg displays. I will also see about getting a schematic together to post. Good luck!

     

    -Kaleb

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