App Dev team Questions

We have now created an app that can recieve data via bluetooth and displays this data in a list on the application. This data gives the latitude and longitude of the hiders device. We now only don't ...

Our memory of the arduino is full, so we cannnot upload the sketch anymore, but we dont have finished all of the code yet. How can we fix that?

I am working on assignment 4B, and I faced one problem in step 3. I tried to use the morph function, but when I searched DrawingPanel, I didn't have the option of one from the assignment. Could you, ...

For our application, i have to connect to the ble-nana. For this connection i used the code provided as awnser to this question: Bleutooth connection to android studios. However, this code does not ...

My groups are trying to connect 3 Arduinos (e.g. A, B, C); connect A and B with Bluetooth connection, connect A and C with wire connection, so A is the master here. We have managed to connect A and B ...

I have to measure the distance between two arduino's. I wanted to do this by measuring the RSSI strength and noting down the distance which belong to the signal strength. I just can't figure out how ...

For the project, we want to import the code for the RFID code in the sketch of the project with cpp and h files, but it gives an error that the mfrc522 has multiple definitions. The first definition ...

I'm working on the code for the project. I worked pretty well, but now it has suddenly become impossible to call functions. It says: "not declared in this scope" for everything? I can't figure out ...

we want to transfer value from one Arduino to another one using metal plates. in one Arduino user can set a timer and we want to transfer this information ( timer duration ) to another Arduino via ...

For our prototype, we would like to connect components directly via wires instead of using the breadboard. Is it permitted to solder components of the electronics kit?

A week ago we asked how to get the data from the arduino to our application. We then used the information you send us to make this kind of connection, we specifically used this artical: https://www....

I worked on assigment 6 yesterday and it was still working. But now I started up the application and I only get this for a brief second and then nothing happens. I've tried restarting my laptop, ...

This is the screen I got when I tried to log in with my s.a.slump@student.utwente.nl email. Logging in with my s2361868 email doesn't work as well. What should I do?

For our project, we have made a Players class. The idea behind this was to make an instance of this class for each player. This class contains some variables that can be retrieved with different ...

I wrote my code to get a beeping sequence but for some reason when I define my count over 650, it does not work anymore. can you see what is my mistake here? long debounceDelay = 20; // the debounce ...

i have coded a counter it works fine itself, but i made it start from 100 and want it to count to 0. now it shows : 100 990 980 970 ... How do i make it show 100, 99, 98...

We wanted to use a sketch from the internet, but the libary is deprecated. When replacing the the new library in the '#include <>' , some things are not declared in the scope of course. If import ...

I am working on challenge 6 atm, but I cannot figure out which port to use. My Arduino IDE gives the following information: Which port do I need to use? For the Arduino program, I used the current ...

I was wondering if someone could tell me how to connect the two Arduino's we have at our disposal? thanks in advance!

For the project, we want to have two Arduinos communicate with each other via wires. After some research I figured this was done by connecting SDA and SCL pins. However, one of the Arduinos is also ...

I'm trying to create a timer with Arduino and 3 buttons. One of the buttons is to increase the time when it is pressed. I would like to know if it is possible on the OLED display to show "00:00" ...

I am trying to build an application for assignment 7, however I can not run the emulator, even though my specs should be more than enough(gaming PC). I am currently running the app on my personal ...

For project i need to program that a gyroscope is connected to a bottle. And when the bottle tips over a timer will start counting until the bottle is put rightup again. So i used the same example ...

We have programmed a PN532 RFID scanner. We can see all the different card ID's popping up in the serial monitor, but now we are stuck at the point where we want to use that ID for triggering for an ...

Dear Fjodor or any of the other TA's, We have a question about our project. For our project we now have created an application for on the phone and we have coded a gps module in arduino so that it ...

Mr. van Slooten. We are working on our prototype, and we are having difficulty connecting a 2.2 TFT display to our arduino nano. Do you know wether this is possible or do we need another arduino?

For assignment 7 I'm trying to make a timer. Im trying to get the count down in an easier code. Now I have a whole list of: display.draw2x2String (4, 2, "08"); going from 10 to 0 I was wondering if ...

I started assignment 6, though, but when I opened Eclipse IDE, Assignment5 was full of errors and I am not able to play the game anymore, nor go on with assignment 6. Yesterday I recorded the video ...

Arduino IDE does not get the information when my phone is tilted to the right. All the other directions work perfectly fine. I used several other phones to test if there was something wrong with mine, ...

My basket returns error messages when I try to move it. keylistener prints out keys like usual and I looked for usual errors but I always get the same error message during the run. keyPressed 39 ...

In assignment 5 I faced a problem in moving my basket. it only moves one to right and one to left and also it prints the picture of the baskets over and over without removing the old one. Also after ...

I double checked everything and it seems okay yet the basket is not moving. (while checking whether I converted local to field there wasn't any switch. The only line I had as the class variable was ...

for the project I need to code an application that does some certain things, I have taught myself how to use flutter and coded a big portion of the application already. However, I need some assistance ...

My basket will not move. Using the console I've checked whether the keyPressed methods are being called; this is the case. Also, adding the basket.setMoveL method to the constructor does not cause the ...

My basket can only move 1 place to the right and only 1 place to the left somehow. It worked perfectly before. Link to video: https://youtu.be/IE06qsapL2k

When I run assignmnet 4b at the end it gives these errors.

I tried to print my balance and first had the same issue Aaron van Santen had. I tried using the solution that was given there, but after that my display doesn't display anything anymore. However, it ...

im having trouble creating a ball at step 4 as there isn't a ball.png. What should be filled in there?

I got selected to do a live demo for assignment 3

I have a problem with Assignment 4b as it is all working out in the design and I don't receive any error messages in the code itself, but I can not run it. the console gives me a java.lang....

I am working on assignment 4a, at step 2 you have to control your circuit by running the program. When I do this, my leds go on one by one. Then they stop at the same time. But if I push a button, the ...

I have two questions about Assignment 5. The first one is about the timer. When I add the code for starting the timer, the drawn basket and launcher dissapear. I don't know what I did wrong there. I ...

im getting this error when trying to upload my sketches to the arduino. Arduino: 1.8.12 (Windows 10), Board: "Arduino Nano, ATmega328P (Old Bootloader)" Sketch uses 11974 bytes (38%) of program ...

I got a notification that I am selected to have an additional livechat for practical assignment 2

I'm having trouble with the Arraylist of assignment 5. It keeps giving me an error message saying that ArrayList cannot be resolved to a type. I looked at how it was done in the lectures and it seems ...

I am currently working on assignment 4b (the eclipse version of the soda machine) and I have a problem. For some reason, the image is not displayed. I added the line of code, I set the panel to ...

I am trying to open the app dev site but it does not work I had it opened this morning but then tried to log in because I had a question about assignment 4 but then it did not work to log in and now I ...

I am unable to convert my local to field in step 3. I successfully completed all the previous steps but the button just doesn't show up. I also can't see fields for the basket and launcher. Not sure ...

I am doing assignment 4a. When I try to print my balance, the display is printing letters instead of numbers. I tried printing them towards my serial monitor, however, here numbers are printed. Does ...

when I compile the project when the vending machine file is being added, there shows an error about the #include in both product and vending machine class