help needed

Hello, I am a bit hesistant to ask for help and im sorry, but I have a final project due soon and i have to build an attendance system but I'm struggling a bit and I'm cramped on time due to previous exams and projects, In it I can only use IC Chips and no microcontrollers It has 4 switches...

Hi everyone! I’ve been working on a microcontroller-based project that was rock solid on a breadboard,, but I’ve hit a bit of a mystery after moving the design to a custom PCB. While the jumper-wire prototype felt very stable, the PCB version is behaving unpredictably—specifically during...

Hi guys, I am trying to repair my TV's power board. A few days ago the bottom half of the TV went dim. It is a Samsung edgelit TV and the bottom half of both led strips are not working. The led strips are fine and the problem is somewhere on the power board. I have traced the circuits for...

Hi Everyone, I am VERY new to electronics and teaching myself how to put together basic PCBs so forgive me if this is a total flop. My goal with this project is to create a PCB that can act as passive or transparent volume control. I want to be able to plug in my record player to the input...

Hi! Its my first time working with eagle and i dont really have a clue how to even start. I want to make a PCB for this schematic but I don't know how to route the traces on the PCB or where to place the components at all. Could someone help me please? That's the schematic im working with. The...

I am basically level 1 new and don't even know what words to use to start Basically I want to build a simple door alarm, everything I found costs hundreds of dollars for anything that might do the stupid simple thing I need Basically I want to make a little device that is battery powered that...

Hello, I wanted to fix my radio as it didn't quite catch AM. I found an orange part with two little wires soldered to it. Does ANYBODY know what that is? I looked through Google and nothing. AI told me it could be an inductor or some coil.

Hello all, As the title implies, I’m currently designing / drawing a 4 bit counter composed of 4 D flip flops. I’m unfamiliar with circuits and was wondering how I would go about creating a reset button that would set the counter to its initial state in the sequence, which isn’t 0. Currently, my...

Good work everyone. We need to make a fiber termination device using sg3525, tc4427 and 1000v mosfets. There will be a 24/750 v transformer at the output of the mosfets. Since this is my first physical project, I need your help. Can you help me with a design scheme, especially for the part up to...

Hey, I'm Daniel and new in the forum! I'm trying to build a circuit to preform ECG with DRL for a school project. I'm having problems with amplification and simulation. In the circuit I'm using the Wilson Central (Right Arm + Left Arm + Left Leg), one high pass filter (0.5 Hz), one low pass...

Hi, I'm a physics student, and I have a small problem for a lab that I have to solve. Here is my problem: I must create a circuit which uses capacitors to gradually close a light, but in addition, we must pass the current from the capacitor which discharges by the base of an NPN transistor. A...

Gday! I'm an avid woodworker and I'm wanting to make an analog clock that has a the ability to display day, date, and month that won't require manual adjustment for leap years and such. I think the best woodworking way would be rings like this with cogs on the back, mine would have a facade...

So I have been playing around with some disposable cameras to make little tasers and that's been all fun and everything but I would like to step it up now to something a little bigger. The only problem is I have no real clue what I am doing and don't have any clue on how to power it in the first...

I have searched for this part for about 8 hours in the past 3 days but have not been able to locate what part it is on Google, and Yahoo (via Firefox). I have deleted numbers from the back, then from the front into these two search engines, and also tried Google Lens. I have also conducted some...

I hope I’m posting in the right place. Forgive me if I’m lost, because I’m honestly lost about this whole situation. I came across this forum when searching and thought maybe I could find an answer or at least some direction here. I’m constantly misplacing things and whenever I buy tags...