QR Code Clock

thingiverse

This remake is a QR Code clock utilizing a WeMos D1 R1 and 1.3in SPI OLED display. Acknowledgements: ----------------- Box design: c1Sco - https://www.thingiverse.com/thing:2607585 Wunderground code: smily77 - https://www.thingiverse.com/thing:2155175 QR Code generator: Project Nayuki - https://www.nayuki.io/page/qr-code-generator-library How it works ------------- When powered on, the WiFi Manager attempts to connect to your WiFi network. If it cannot find your network or this is the first time running the software, it creates a WiFi hotspot called CLOCK. Using your phone, connect to this WiFi hotspot and you will be presented with a menu. You can either select your network's SSID from the list or enter one manually. You will be prompted for the password if required. Once connected, it retrieves your latitude and longitude and uses this location to connect to the WUnderground service. This service returns your time zone, taking into account daylight saving time. The software then contacts an NTP server to obtain the current time using the previously obtained time zone. It also acquires the current temperature and weather forecast from the WUnderground site. In the main loop, the software generates a new QR Code every second. The QR Code contains the time and date in the format "HH:MM:SS DAY_OF_WEEK DAY MONTH_NAME YEAR". You can read this using your phone; there are many free QR Code readers available. Weather forecast and time zone information is updated every 15 minutes. Make: ----- 1. Source the components WeMos D1 R1 - https://www.ebay.com/itm/D1-Mini-NodeMcu-4M-bytes-Lua-WIFI-Development-Board-ESP8266-by-WeMos/182035363514?epid=2236160554&hash=item2a622736ba:g:NSYAAOSwe7BWzu4m 1.3" SPI OLED display - https://www.ebay.com/itm/1PCS-1-3-Blue-SPI-Serial-128x64-OLED-LCD-Display-Screen-Module-For-Arduino-L/262742211079?hash=item3d2ca7fa07:g:E1QAAOSwEzxYPqig 2. Connect the components OLED_VCC - 3V3 OLED_GND - G OLED_MOSI - D7 //Sometimes labeled D1 on OLED OLED_CLK - D5 //Sometimes labeled D0 on OLED OLED_DC - D1 OLED_CS - D8 OLED_RESET - D3 //Not all OLEDs have this (mine didn't) 3. Obtain an API key (free) Register with https://www.wunderground.com/signup. After receiving your API key, add it to line 13 of QRClockV1.ino 4. Program the board Libraries used are included; you will need to add them to the Arduino IDE before compiling. I tested the system first on a proto-board before adding it to the box. 5. Print the box STL files are at https://www.thingiverse.com/thing:2607585 6. Add the hardware Glue in the OLED display with hot glue. Cut a piece of strip board to hold the female headers to plug in the WeMos as well as a connector for the display (optional - you can solder the wires directly if you wish). Once tested again, glue the strip board to the base using hot glue. Measure where the USB socket is and cut a hole in the back big enough to put in a USB plug.