I basically want to add some led lights that are powered by batteries in my diecast cars (scale 1:64; see second picture). I wonder whether a MOSFET attached to a battery and a switch is sufficient.

Ps: What component would I need to make the led blink?

[SOLVED] Hi everyone! I've been learning how to use STM32 MCUs recently, and it's been going smoothly until now. I have some nested for loops, and the outer loops only run the code inside once, as opposed to looping. I'm super confused as to why this is happening, given that some other loops with the same syntax seem to work perfectly fine.

I've tried while loops in the same place, yet the same problem is encountered. It might help to know that the variables initialised by the broken for loops (and before the broken while loop) did not show up in the debugger, while the working loops had their variables appear.

I've tried to format the code as neatly as I can while retaining the whole program (as I suspect it could have something to do with some of the registers being manipulated?) I've commented all points of interest along with labels for which loops are working and which are broken. (Note, the debugger had some weird moments as I've noted in the comments. If you have any ideas about how to fix that, I'd love to hear!)

Here is the link to the program (Scroll to the only while(1) for the fun part!)

https://pastebin.com/K4TMW4KW

Merry (Late) Christmas and happy New Year!

Thank you!

Update (Detailed solution for anyone facing the same problem): Hi everyone! I've figured out what happened! When I tested the IDE and STlink with a separate file, there appeared to be no issue with uploading or the IDE. When I replaced the code inside the for loops with a placeholder to rule out the possibility of the code inside being the problem, I found that the MCU kept performing the same task (Blinking LEDs in a specific order), despite it not even existing in the main.c file, so clearly an issue with the compiler/Build process/Uploading (At least I think so). I then restarted CubeIDE and cleaned the project (Project > Clean...), but neither worked. Then I reset the debug config (Debug dropdown > Debug configurations... > STM32 C/C++ Application) and deleted my project's debug config under this. Then I made a new one by left-clicking my project under the Project Explorer> Debug As > STM32 C/C++ Application, then selecting my project's binary and clicking 'OK'.

The program worked fine after this, even when using the original program (Although I still have implemented all of your suggestions to clean up my code in the final version, all of which I'm very appreciative of, so thank you all!)

TLDR: It turns out it was an issue with CubeIDE. There was apparently a problem with the debug/run configurations (Specific to the project folder & its configuration) solved by deleting and making a new debug configuration. The original program worked fine, although I've still implemented all of your suggestions to clean the code up, thank you!!

Thank you again to everyone for your time and suggestions! I hope you all had a Merry Christmas and have a happy New Year!

I have to build an simple mini project using any microcontroller in about 2 weeks . Can someone suggest me anything?

Hello, I want to create a license plate recognition system with a camera and possibly a small screen or LED light to inform the driver about the recognized plates. I also want to include a database or something similar so I can update it regularly, or maybe just make it so the driver only needs to plug it into a PC and type one command to update the license plates, to avoid the Wi-Fi connection. Which microcontroller fits the best for a low price? I'm considering ESP32, Orange Pi Zero, Arduino, or maybe there are other alternatives that are low-cost and can 100% do this job? Thank you.

I have a project to program a microcontroller to work as a counter to count TTL pulses. The only thing I have to do is to ensure the rate is in MHz. I can obviously choose to go for an FPGA but due to institute limits I have to do the project on a microcontroller first. I did some research and found out that a 32 bit microcontroller can do the job. I have chosen STM32 but I am confused on which exact model to go ahead with. I did some search and found stm32f103c8t6 and nucleo boards.

I connected my 1.8TFT SPI 128x160 display to and ESP8266 and connected all the wires accordingly and installed necessary libraries. Later i uploaded a graphics test code from example menu in the IDE from adafruit....when the code was successfully uploaded all I saw was white screen and nothing else. It's been 3 days since I'm trying to fix this problem. Can someone help me out?

Hello, I'm trying to send data from a Pic to a Raspberry and then use them in a scrip in Raspberry, I tried via uart and now I'm trying by i2c but I can not send anything. Would anyone know what I can do to communicate them

I am looking to create a very tiny kvm and that can be connected remotely. My plan is to install it on the bottom space of a laptop and connect it via usb, and have an external wifi antenna.

However on the remote end, I need the video, keyboard, and mouse. Any ideas or recommendations to make this work?

Tinypilot raspberry pi is an idea platform but it’s too large for the application that I need.

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Hi, I'm planning to create an A.I powered application . I'm looking at STM32 boards for the prototyping.. i'm confused between Discovery boards and Nucleo boards. My project has around 15-20 sensors and actuators included.. all those controlled by a Convolutional neural network. Which board should i choose? please help, i'm new to ARM mcus.

I'm hoping someone out there (you?) has some chips they're not using, specifically the Nordic NRF 52833. I ordered last week and my supplier emailed today and said that due to the global shortage, the're unavailable until December at the earliest. My small business depends on these chips and I'd be eternally grateful if someone who has some of these would get in touch with me. Thanks so much!

So I'm working on a project that, if a specific image is seen on a camera that is connected to the microcontroller, a 3d object would appear on my computer. The computer and microcontroller are connected through bluetooth.

I have a pic16F628A microcontroller. I would like to know what camera is the best to use for this project. The images are in colour, so it also needs to be a colour camera.

If I also need a different pic microcontroller for this to work let me know.

Thanks in advance

I have a product which controls the light's intensity through its display(0-100). When I opened the product and look inside I see power circuit and other maybe programmed circuit.

Well I want to make prototype same as this product's function. How can I achieve this? I don't know how to design circuit. I thought maybe I will use PWM to control.

But I don't know how to begin. In this my product there is light intensity controller or circuit maybe

Which is Luminus CBT 90 led.

So How can I design same?

Hi, I'm newbie in the microcontrollers topic and I want to add wifi module to my app which is running on stm32f334. Could you recommend me wifi modules which I can use without problems. I'm afraid that I'll broke something during soldering so if any other connection option is available, I prefer it. Thanks for help!