![]() This project does require soldering connectors or wires onto the Pi and/or the tm1637 modules. So each of the four displays could show a different time zone and in 12hr or 24hr format. ![]() You can also set the TIME ZONE that you would like to use instead of default Local time. The software is designed to let you use just UTC 24hr (typical hams) or different times on up to 4 different displays. S3-0519, If you cold include the radio broadcast as a streaming service over the. I also wanted the clock to show the Local Time in 12hr and 24hr formats as well as UTC in 12hr and 24hr formats. S3-0508, Synchronize my computer clock with actual time automatically. I am planning another version of this clock to run on an Arduino Uno and a Real-Time Clock module, for when no WiFi is available and for more portable operation. It requires two wires to drive the display plus 5V + and Ground for a total of 4 wires.įor this particular project, I wanted the Raspi to get its time from NTP (Network Time Protocol) servers via the Internet. ![]() The TM1637 driven display has four 7 segment leds with a center colon : between two sets of digits. I decided to build a digital clock using the low-cost TM1637 4 digit displays and a Raspberry Pi Zero W instead of just a GUI clock. This app does not collect any personal data or share anything with anyone.Date Category Project Tags 7-Segment Display / Clock / Raspberry PI Zero W / TM1637Īmateur Radio Operators (aka HAM Radio) use 24 hour UTC (Universal Coordinated Time) for much of their operation. Sharing via other applications is not tested, and it may or may not work. Sharing via Bluetooth is less reliable on different devices, because android versions and phone vendors vary in trusted file types for BT transfers, and in permissions needed to access bluetooth storage space (received files). If proper JSONArray file format is detected, "save or discard note" is offered. With Gmail, open/receive directly from an attachment (no need to download the attachment first). Sharing works best via Gmail or GoogleDrive. hctxt (HamClockTxt) but can be edited in any text editor. Share note content as a simple text file, formatted as JSONArray (string). If you don't want audio alert, select "silent" or "none" ringtone. Optional ringtone played along with the visual reminder. or amateur radio in general, please feel free to email me. I have a smaller alarm clock on my desk, right under my computer screen, but you might like a larger clock of some kind, but in any case, plan for a separate clock for world time, as hams live on Zulu time, and not local time. Optional popup every 10 minutes to remind you to transmit your callsign. Plan for a big clock that shows Zulu or UTC time. Large font and contrast for readability in bright daylight. Hide local clock, leaving even more room for notes Note view is scrolled to show longer texts Multiple notes can be entered and saved for later use. Use it to record location name, QTH locator, callsign, activation details for SOTA, WCA, WFF or other activities, event info etc. Note can be entered in up to four fields. Reminder to transmit callsign every 10 minutes, as required in some countries. It displays time/date and user notes related to various portable locations on a single screen: Ham Clock currently has 193 ratings with average rating value of 4.6 HamClock is targeted for portable amateur radio operators. According to Google Play Ham Clock achieved more than 10 thousand installs. The current version is 4.03, released on. Android application Ham Clock developed by Zoran is listed under category Tools.
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