9/7/2023 0 Comments Arduino stopwatch timer![]() ![]() Our LCD's memory is stored the same as an 8*2 display even though it is 16*1 Int photoresState = 0 //photoresistor state LiquidCrystal lcd(7, 6, 5, 4, 3, 2) //assigning pins for LCDĭouble startTime //declaring variables for time, buttons, laser, states If you need assistance setting up Arduino, please review this Digi-Key post: How to Get Started with Arduino. Please use the code provided if you are using the LCD from our parts list. We modified our code to accept the LCD of choice. Once you have everything, you can start the engine and begin to put the pieces together. You will need a 3D printer to make the finish line case and starter box unless you are using parts from a hardware store. Whether you use the list provided or your own, that is how the race starts. ![]() When starting this project, you will need a parts list. We decided that 3D printing the parts for our finish line project would be our best solution, but if you do not have access to one, you can make a case with parts from your local hardware store. In searching for an enclosure for the two push buttons and LCD display, we realized that it needed to be sturdy enough to handle a small amount of pressure while the user pushes the buttons. Please keep this in mind if you decide to use a different display, as you will need to change the code to fit the characters on the screen. This is important in the code we have attached for the timer. The parameters are 16 x 1 display format. When picking an LCD display, we chose part NHD-0116AZ-FL-YBW. Using Digi-Key’s website, we created a parts list. The sensor would stop the timer and the final time would show on the LCD display.Īfter we had a general idea of the project, we found the parts we wanted to use. At this moment, the robot would race across the floor until it reaches the finish line. Then, the user would push the start button and the timer would begin. Attached to the enclosure is a box that holds the Arduino, two buttons and our LCD display. We decided to create an enclosure that hosts a sensor with wiring. What exactly would we be building? Our assignment was to build a finish line with a working timer for the robotics team to race across. We collaborated as a group on what we wanted to be in our project. We split up our project into stages: the idea, the planning, and the final construction. With an objective to create an electronic finish line for a local robotics team, our team of Application Engineering Technician Apprentices welcomed the challenge. Follow the steps within the post to build your own stopwatch finish line with Arduino. This guide to building a stopwatch with Arduino provides: a parts list, code, pictures of the finish line, and STL files for 3D printing. ![]()
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