Run timer on ESP8266 with web interface. Based on DonKracho's project.
Measures time of a single run: from start to finish. After first interrupt of sensors.
After powering up, ESP8266 creates access point SSID with web server with IP WEB_SERVER_IP (default: 192.168.1.1).
Just connect to AP, execute favourite browser and enter WEB_SERVER_IP).
- MCU ESP8266 (e.g. board Wemos D1 mini);
- E3F-R2NK (photoelectric sensor with IR transmitter, NPN, NO);
- Mini360 buck converter (to power from 12V batteries) or boost up converter (to increase voltage to power the sensor - the detection distance is too short at 5V).
- Indicator of sensor's signal presence (useful thing during sensor and reflector installation);
- Current number of run and time;
- List of all runs;
- Best run;
- Customizable time threshold via web UI (after interruption, the system ignores further interrupts during
threshold_msmilliseconds).
For Chinese WEMOS D1 mini choose board LOLIN(WEMOS) D1 R2 & mini
I used the following setup and libs:
- Arduino IDE 1.8.10
- esp8266 board 2.5.2. Link for board manager: http://arduino.esp8266.com/stable/package_esp8266com_index.json
| Lib | Version | Source |
|---|---|---|
| 1) ESP8266WebServer | 1.0 | esp8266 board |
| 2) ESP8266WiFi | 1.0 | esp8266 board |
| 3) WebSockets | 2.3.6 | lib manager |