Timing system for Alpine skiing based on Arduino. Connection Diagrams

As far as I understand the concept of Arduino, if you need to take a soldering iron in hand, it is only to wire the modules which project consist on. Wires plan to attach to the legs of the modules using connectors. Then in the case of repair it will be quite simple to replace one module with the same another one.

In this note I’ll leave the wiring diagrams of the modules of which the Start, Finish, Scoreboard, and Individual Radio Stopwatch units are made. I hope these schemes will not be required during the operation, but should still be 🙂

In all schemes, the power bus (that is, everything that connects to the 5V leg on the Arduino board) is marked in red. That is, the red wire that goes “nowhere” is power supply. Similarly, black wires are the “ground” that is connected to the GND Arduino leg. The remaining colors on the schemes were chosen arbitrarily. Prices and actual for this project delivery time are collected in the note “Timing system for Alpine skiing based on Arduino. Order modules”.

Let me remind in general the interaction of units. Finish every half second transmits the current time of its onboard timer over the radio channel to the Start. The start takes this time and calculates the difference with its onboard timer. All timing calculations are made on the Arduino Start unit. When a participant crosses the photo finish, the “Finish” unit sends several packages in a row at the start with this time. The “Start” unit responds to the first such packet, calculates the result and sends it over the air to the Time Board unit. In addition, Start and Finish are equipped with short-range transmitters to operate with individual stopwatches, which “ride” along with the participants.




Start

Timing system for Alpine skiing based on Arduino. Connection Diagrams
1- LED “Can start”, 2- LED “Low battery”, 3- short-range transmitter for an individual stopwatch, 4- radio module nRF24L01+, 5- piezo buzzer “Can not start”, 6- button duplicate gate opening, 7- DNF-Reset button, 8- indicators for scrolling output results of three participants, 9- Arduino Nano from RobotDyn, 10- LED “No radio connection with Finish”, 11- charger , 12- power switch, 13- DC-DC boost from battery voltage up to 5 volts, 14 – battery 18650 3000-3500 mAh

Timing system for Alpine skiing based on Arduino. Connection Diagrams




Finish

Timing system for Alpine skiing based on Arduino. Connection Diagrams
1- LED “Low Battery”, 2- short-range transmitter for an individual stopwatch, 3- radio module nRF24L01+, 4- button, duplicating the photo finish operation, 5- connector to photo finish, 6- Arduino Nano from RobotDyn, 7 – charger, 8- power switch, 9- DC-DC boost configured to 12 volts output to power photo finish, 10- DC-DC boost from battery voltage up to 5 volts, 11- battery 18650 3000-3500 mAh

Timing system for Alpine skiing based on Arduino. Connection Diagrams




Time board

Timing system for Alpine skiing based on Arduino. Connection Diagrams
1- power adapter from RobotDyn for the radio module, 2- module nRF24L01+ + PA + LNA, 3- LED “Low battery”, 4- Arduino Nano, 5- indicators 1-3, 6- indicators 4-6, 7- power switch, 8- charger, 9- DC-DC boost, configured to 5 volts output, 10- battery 18650 3000-3500 mAh

Timing system for Alpine skiing based on Arduino. Connection Diagrams



Individual stopwatch

Timing system for Alpine skiing based on Arduino. Connection Diagrams
1- indicator, 2- short-range receiver, 3- LED “Low battery” + “Receive data from Finish”, 4- LED “Receive data from Start”, 5- Arduino Nano, 6- power switch, 7- charger, 8- 600 mAh battery

Timing system for Alpine skiing based on Arduino. Connection Diagrams

Here are collected all the notes on the theme “Timing for skiing on Arduino”.

Timing system for Alpine skiing based on Arduino





Vadim Nikitin DigInfo.ruVadim Nikitin

 

 

 

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