led

I like to make things and I had an ambitious idea to make a small scale Griswold house and needed to wire together 100 1.5V 100mA (AC and DC compatible) pre-wired bulbs that are typically used for hobby train use. I am a complete newbie to anything that has to do with lights and wiring, but my...

Hi there, I am new to this form and new to electronics in general. Apart from occasionally wiring a plug I haven’t really dealt with electronics since leaving school 15 years ago. I am planning on making a “busy board” for my son. It’s basically a 200 x 120 x 50 mm plastic box with holes...

Good day all. Just purchased 4 LED strips to go under kitchen cabinets. The LED strips come in a plastic case and at each end of each strip there is a connector. The connector is the type that you find in RC cars. I want to connect each strip to each other and connect it to a plug that will plug...

As the title suggest this is a first draft of a custom PCB by yours truly. So as you may notice, I'm not an electrical engineer just a hobbyist. I used EasyEDA for this project, and to the best of my knowledge selected the right parts from LCSC component library. I would love if someone could...

Good morning all Iv had a bit of an idea and just wondering if there is anything out there or something similar as I'm not any good with coding. Iv build my son a basic gaming pc and he would like rgb but the mother board doesn't have a argb header, and I was wondering if a controller could...

Hi all I just wanted to simulate a 5mm green LED connected to a DC source. I expected to see more than 2V at the A point of the circuit but it looks like it's more or less 0.7V which is the typical forward voltage of a diode. Where i am going wrong? Thanks

Are power boards designed with circuit to help prevent electrocution? While testing the 240V power board (BN44-00807A) in my Samsung UA50JU6400 TV, I shocked myself. I was testing the voltage output to the LEDs with my meter and unfortunately touched the metal shaft at the end of the meter's...

What is a good driver for a 30W RGB LED? I got it ages ago then forgot about it but might want to use it in a project now. Here is a picture, also I would like the driver to be able to be controlled with an arduino. This is the link, but don't worry I also put a heatsink and fan on the back of...

First time repairing a LED. A year after purchase, my barn light started flashing non stop every seconds. At first I thought it was the light sensor but changing it did not solve the issue. The next possible culprit would be the driver, but unfortunately there is nothing written on it to...

Hello - I'm creating an LED device and I'd like to have a good understanding of grounding/safety so I don't accidentally harm my users! I'm powering my device with an AC/DC wall mount adapter that outputs 20V which connects to a barrel jack on my PCB. I'm using an LED driver as well that...

can anybody reverse engineer the circuit of this? it's a one channel chaser for a 240v load

Hello, I'm searching for an IC able to keeping enabled or disabled multiple LEDs with a push-button without a uC, but I haven't found anything. Thanks!! I don't want a mechanical button.

I am having trouble understanding how this circuit works. I've breadboarded it out and the LED flashes but I can't seem to wrap my head around how the NPN vs the PNP is creating the flash. Any help is greatly appreciated!

Guys I'm having difficulties regarding a light drive, I'll report the problem and what I did to try to solve this situation. The light driver is being placed in an LED fixture, when you clear a phase (using interrupted or forcing a phase out), the LED is lit, it stays lit very dimly. And when...

Hello! I have a project in mind that I need some assistance with. I am looking at purchasing these UV LEDs. I want to connect it to this endstop. It is a switch from a 3D printer. I only need to wire up a single LED. The power source would ideally be as compact as possible. Also, if anyone...

hello I am designing high power led lamp for vehicles using this led. led datasheet this led has If up to 6A and Vf is around 3 V, I am going to use it at 4A for longer life. My input voltage source is car battery so voltage range is 12V - 16 V I am hoping to connect two leds in series. since...

Hi all, I am currently reviewing this Degson DG2002-4.0 connector. https://www.degson.com/content/details_123_10715.html May I know what does the arrow above the connector mean? And what do the holes beside the arrow does? Based on the photo below, there is this operating tool which can be...

Hi there! New here, wondering about some stuff for fun projects at home (my electronics classes go back 18 years ago, please forgive me if I am not very proficient). A friend of mine made a home-project: playing a sound on his computer, and a microphone detects the sound, and generates a...

Hi All, First time post here and looking for some advice on a simple circuit to see if I have it correct. I am trying to drive four LEDs from one Arduino (5V Pro Micro or Mini) pin. Five pins will be eventually used all doing the same thing although at any one time only one pin will be "on"...

Hi all, I have a Solar LED Light that is not working, and I want to use this to get back into electronics a little. I'm a Control Systems designer, but this level of electrical work still creates a lot of confusion for me. So I am hoping to use this as a learning project. The board is a...