8/10/2023 0 Comments Mcwhorter arduino while loop![]() If you’re adept with programming the Arduino and just want to learn how to use an LCD display, you can just jump right in with me on this video. ![]() This was the basis of one ult, but since I have four different ones to keep track of, I just used the same logic and made multiple detection blocks with the same haystack image, and different needle images.If you’re new to the Arduino, you probably need to go back and catch up on those lessons. They're in two different environments so it's not a problem. You could set them as the same, but it works all the same. ![]() mode=Serial.readStringUntil('\r') ĭon't mind that cmd and mode are two different variable names. Min_val, SSmax_val, min_loc, max_loc = cv.minMaxLoc(result) Result = cv.matchTemplate(screenshot,SSneedle_img, cv.TM_CCOEFF_NORMED) SSneedle_img = cv.imread('SakuraSwirl.png',cv.IMREAD_UNCHANGED) This is plugged into our main file for template matching to compare our needle image against. Now, a screenshot of this area of the screen is returned from calling the function. These coordinates were handily provided by the cv.matchTemplate() function. #Coordinates of the upper left corner of the section capturedĬDC.BitBlt((0,0),(self.w, self.h), dcObj, (1779,932), win32con.SRCCOPY) We also need to set the top left of the corner of our desired section in the code lower down. # Put monitor resolution for whole screen # Size of the section of the screen that is being captured Now, we can trigger something off like this if (mode="SS")') So reading until this tells Arduino to read everything before a new line is started. Without it, the strings we send from python would just in one very long line. This is the character for the carriage return, which sets the string after it on a new line. It continually reads it until the character '\r'. Now on the Arduino side, we just need to read the serial monitor. In short (and in very rough terms), on the Python side:ġ.) We install the PySerial module in the terminalĢ.) Create an object that affixes our command(a string) it to the respective serial port and baud rate.ĪrduinoData = serial.Serial('com3',115200)ģ.) Set a command (mine was SS) and attach a certain character on to it Shoutout to the most excellent Paul McWhorter for the Python Arduino tutorials where I learned this from and you should probably take a gander at it yourself here if you want to understand better Python has a module that allows it to communicate to the serial port, and then our Arduino reads that, and sets our lights off. If you've ever done a project where you enter a command into the serial monitor of the Arduino, it's that exact same concept. We need a way to communicate from Python to Arduino, and that would be handled by the serial port. That trigger part will come a bit later down.Īll the complicated fancy screen detection stuff is handled over on the Python side, as Arduino really isn't equipped for that. Then I wrote the if loops for if the trigger was detected, then to turn on the light. A light, bright blue for the ice element, a deeper one for the water element and a warmish green for the wind element. With this now, I just experimented with colours until they matched up to the elements. Perhaps off to the side of your computer or behind the monitor It just happened that my laptop stand (yes, it's made from LEGO) had a breadboard-sized gap underneath it but you'll have to integrate your lighting some other way if not. The lights were also a bit harsh so I diffused them with some white tissue paper. These were loose so some tape was required. I did use the male to female connectors so that I could put the lights wherever I wanted them. Using the 6 PWM pins on the Arduino, I wired things up as in the diagram section. ![]() You could add more, or even take it a step up and sync it to those light strips once you find a way to communicate to them but I'll use what I have. Since I was using different colours, I used the two RGB LEDs that came in my starter kit. Working our way up, we start with the Arduino. Note that I'll be putting snippets of code with the variable names from my specific project but it should all make sense when you see the full code later on. The arduino was simple, but the rest needed a lot of work and testing. Something to detect a trigger (OpenCV on Python).A way to communicate the trigger to the Arduino (Serial port).There are three main phases to get something like this working. The code block formatting is a little buggy at places (like the comments showing as code) and I don't know why but just scroll to the code at the end for any clarifications. Template matching is applicable to everything so I'll run through this tutorial (.I hope) with my game as an example and you should be able to adopt it to yours.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |