Simple esp8266 + tm1637 NTP clock Converting a 7 segment STC Chinese clock to ESP8266 + tm1637 with optional BME280/BMP280 Humidity and temperature sensor on separate display.
No major hardware changes required: just a small bunch of wires between ESP8266, clock PCB, TM1637 module and BME280/BMP280 module.
Attention: the following project contains fast-and-dirty firmware code. Made for myself so you probably would need to adapt it for your needs.
- 24 hour time display
- display auto-dim
- relative humidity (%), temperature (C) and atmospheric pressure (hPa) display on a second optional TM1637 module
- webserver with http page showing the time, humidity, temperature, pressure; Time zone, tempreture bias setup, manual clock setup.
List of unnecessary for me and therefore absent functions:
- no date display/set
- no alarm
- no RTC (the clock doesn't work without electricity anyway so why bother)
- no etc
- Blue: connect to Wemos board
- Purple: connect to TM1637 module
- Look trough other photos to get a hints
Google how to use ESP in Arduino envoriment Choose a board "LOLIN(WEMOS) D1 R2 & mini" Flash size: "4MB (FS:1MB OTA:~1019KB)"
Required libraries:
- TM1637 => 1.2.0
- Ticker => 1.0
- ESP8266WiFi => 1.0
- ESP8266WebServer => 1.0
- ESP8266mDNS => 1.2
- EEPROM => 1.0
- Adafruit_Unified_Sensor => 1.0.3
- Adafruit_BME280_Library => 1.0.10
- ezTime => 0.8.2
Important steps
- In the code around 32 line change the SSID and password variables according to your WIFI credentials (there is no AP mode here for simplicity)
- Do not forget to upload static html from data folder! (Tools -> ESP8266 Sketch Data Upload)
- Open the clock's IP (find it in the serial terminal) in your web browser and set your timezone and temperature correction.
I could forget something or do mistakes so use your brain and google to solve problems. Or just write your own firmware from the scratch
There are also Gerbers for those who would like to do like this:
The compatible 1" one-digit 7-segment display models are TOYOLED E11001-G-UR3-0-W or Kingbright SA10-21SRWA (Common Anode )