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Unable to get Dot Matrix Clock working properly

PostPosted: Fri May 01, 2020 7:39 am
by zhixiong86
Hi,

This is my first time getting a Arduino kit to star exploring it, however i'm having some issues.

I'm following https://tutorial.cytron.io/2019/10/23/d ... ing-esp32/ , it seems all pin are proper and setup are correct.

The dot matrix display seems to be not in the right order, what could be wrong? Please refer to pic. Thanks!

Re: Unable to get Dot Matrix Clock working properly

PostPosted: Tue May 05, 2020 10:10 am
by Idris
Hi zhixiong86,

Try to edit the code. Uncomment line 34 and comment line 35. In other words, try to #define HARDWARE_TYPE MD_MAX72XX::FC16_HW and program again. Please let me know the result. Thanks.

Re: Unable to get Dot Matrix Clock working properly

PostPosted: Sun May 10, 2020 6:17 pm
by zhixiong86
Thanks, it working now!

Now I only manage to get it running after I upload the code from the Arduino IDE, how to make it work without reuploading?

Re: Unable to get Dot Matrix Clock working properly

PostPosted: Sun Apr 11, 2021 12:30 am
by rodyeo
zhixiong86 WROTE:Thanks, it working now!

Now I only manage to get it running after I upload the code from the Arduino IDE, how to make it work without reuploading?


Maybe can check my postings... https://m.facebook.com/story.php?story_ ... =554017662

You do not need to "Check/Compile" and "Upload" the code again... you only do it once and unplug the USB cable from the PC and plug it back to regular DC 5V adaptor and it will run but it self from the ESP32 programmed chip... I hope that tips helps....

*** Wait! the FTDI driver is not recognized by Windows Device Manager... FT231X USB UART driver is not installed yet! https://ftdichip.com/drivers/vcp-drivers/ [Select Windows Drivers!]

What to do if a non listed device in the Board Manager Library... add aditional board manager url link at ... Click 'File - Preferences', click the link below, copy the 'Stable release link' and paste it in 'Additional Boards Manager URLs'
CODE: SELECT_ALL_CODE
 https://github.com/espressif/arduino-esp32/blob/master/docs/arduino-ide/boards_manager.md

Then click 'Tools - Board - Board Manager...' Wait for a while for 'Downloading platform index'. Scroll down, install "esp32".

*** Important: Please download and use custom NTPClient v.3.1.0 Library Manager created by Idris @ Cytron.io only, else you will get error... "No Clock Time display on the Dot Matrix Display". https://github.com/taranais/NTPClient/a ... master.zip

Rodney @ http://rodyeo.dyndns.org

Re: Unable to get Dot Matrix Clock working properly

PostPosted: Thu Mar 31, 2022 3:03 pm
by jcheong
I've changed the code to use the standard NTP library.

However, I have not incorporated a "sleep" timer when querying the NTP server, hence I have redirected the queries to an internal NTP server on my home network so as not to overload the public NTP servers.

Let me know if anyone is interested but I would ask that you be responsible and not overload the public NTP servers.