TO BE FILLED

Gymkhana Run Timer

Run timer on ESP8266 with web interface. Based on DonKracho's project.

About

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).

Hardware

• 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).

Features

• 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_ms milliseconds).

Arduino IDE settings

For Chinese WEMOS D1 mini choose board LOLIN(WEMOS) D1 R2 & mini

Dependencies

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