12v

Hello everybody, I am lokking for a PCB design for my idea. When 12 V is applied, blinks a 12 V bulb five times (approximately 1 Hz), then stays continuously ON until power is removed. I asked ChatGPT and its drowed graphical schematic for me. My electrical knowledge is very basic, but I can...

Hi All, I've attached a PCB layout I'm working on (minus the board itself). I set it up a funtional(?) version on a solderless breadboard first, BUT it doesn't work. I've been studing 555/4017 diagrams till I'm crosseyed and I can't figure out why... :confused: Thx, Joel

Hello, I am seeking some help find a ready to purchase 12v control board. I need it to have ac to dc plug, 12v usbc or usb charging capability, and on/off button. Does anyone know if this already exists? It needs to be water proof. I am trying not to have one custom made. Thank you in advance...

Hello! I am hoping someone can help me with a wiring issue. I have created a string of LED lights, and I have a 12V power source. Hooking those up will not be a problem, but I want to mount the lighting into a small compartment that has 3 different (small) doors. Is it possible to attach the...

Need help with a 12v Automotive application project. 2 12v electric motors 2 12v Relays 1 electric latch/lock assembly 2 push button switches I built a custom storage compartment with electric motor to automatically open and close and I added an electric latch/lock assembly that locks when...

Hi everyone and thank you for your time, I am having a problem where on my car my position lights work only during night time if left on automatic and in my country by law you need to have at least position on in daytime so I wanted to make them work when the engine is running during the day but...

Basically I’m trying to build a simple car instrument cluster bench tester/simulator that I can use from home. It consists of three 5 pin Halo LED switches. (Tester on/off, Backlight, Turn signals) a small voltmeter gauge 12v power supply. Automotive pigtail connector. The switch on the...

Hello Folks, as the title say I want to buy Battery Charger and found this one on aliexpress - https://aliexpress.com/e/_Ddn2rtR Price seems decent but what about qulaity? Any help is wellcome, thanks!

Hello everyone, this is AC DC Adaptor from my electronic stuff.. this adaptor basically powers up hard drives externally and then we can connect it via USB to our computer. I just powered it on and was checking, but as the connector is rusted, there was a spark while connecting the DC side and...

Hey guys, I have looked everywhere and haven’t found what I want. I am trying to make a charge station out of the Milwaukee battery holders in my work ute. I know I won’t be able to charge all my batteries at once, but I’m trying to find a way I can charge Atleast 6 batteries. I have toyed...

I don't know if this is the right place to post this question, but with the amount of knowledgeable people in these forums, it's worth a shot. I've been messing around with strobe modules for a bit. So far, I've been able to make a range of lighting components strobe for example led bars, led...

Hi all, Long story short.. I have a GTS car that's hyperflashing it's indicators.. have tried all the 'load resistor' fixes the commodore forums have suggested.. An auto electrician this week couldn't even fix it.... Anyway, thinking out of the box... (mind you.. still trying to fix it the...

Hello all, I am attempting to salvage an all-in-one HHD & SD card reading device which was unfortunately a victim of a flood a few months back. The original power supply rated at 12v 850mA, which didn't make it, has 3 wires outputting 12v+, 5v+, & a negative to the device. I have a 24v bench...

Hi all I want to detect a 12V signal using an Arduino Nano v3. I've decided to use a NPN transistor to do so. Is it a valid solution? I've tried the circuit and it looks like it works fine. I've tried to use the 100k res at the base but I don't really know if it's the best value. How to chose...

I have 3 AC to DC transformers powered by same breaker AC breaker: 1. 120ac to 48v dc 2. 120ac to 24v dc 3. 120ac to 12v dc 4. 12v dc to 9v dc step down to power Arduino 5. 5v dc sensor system powered by Arduino board and ground from Arduino board Is it possible to have one neutral/ground bar...

Hello everyone, I would really appreciate if you could help me Im making a mini fridge controller (PID), using a 4n25 optocoupler, an IRFZ44n Mosfet and a tec peltier I connect it to a 12v and 3 A and arduino 5v As soon as the arduino code is uploaded and I connect it, the mosfet starts to...

Hi, I have a project that i would like to complete. i need to activate an LED light outdoors, whenever a designated vehicle comes within 200-300metres of the LED light. i was thinking of using a simple 12v FM radio transmitter on the vehicle. the LED would have an FM radio reciever tuned to...

Hello Everyone, my name is Fredrik. I am new to this forum, and I want to ask you guys about a project I am working on atm. I plan on making a test tool (or voltage sniffer) for monitoring voltage on multiple signals at once. The ECU I will be monitoring has up to 110 different inputs. My first...

Firstly my wishes to whoever reading this piece of text, have a nice year and I hope that everyone is doing fine in this current pandemic and I think this is going to be a piece of the past very soon... I'm also sorry for two things regarding this thread: I'm not a fluent English speaker. I...

Greetings, My current project is trying to wire a headlight and two turn signals to a motorbike using a 12v rechargeable battery. There are no existing electrical parts of any kind for lighting aside from what I’m doing currently. Complete custom job. I need advice: What I have is: A switch...