All Questions
64 questions
0
votes
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answers
92
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LVDS 30 pin cable matching
I have an LCD screen with a 30 pin LVDS connector. I have attached a table with the correct pin assignments, however I am unsure of how to match up the cables. LCD model: G150XVN01
There are only 24 ...
1
vote
1
answer
63
views
Can someone help me with a LED light fixture puzzlement? [closed]
I have been buying and using LED bulbs from the Dollar Tree for many years.
I have never had an issue with them in the past. Just the occasional burn out in my home office fixture because it stays on ...
- 41
2
votes
1
answer
168
views
Doubled-up LED lamp wiring found [closed]
Can someone explain what kind of LED lamp this is and why it takes two live wires and two neutral wires? I am based in the US. I can’t find this anywhere online. There's no real identifier seen on the ...
- 123
0
votes
1
answer
117
views
Can i safely use RJ11 and 24 guage wiring for hobby leds?
I would like to supply power to a bunch of LEDs (a dozen or so) on a model train layout. I would like each light to be modular, so I could easily unplug a building and replace it, etc. The LEDs are ...
- 1,221
1
vote
1
answer
547
views
How do I connect an LED to a MOSFET board?
For the green LED, I'm using a 20 kΩ resistor. I have these diagrams that suggests the green LED should be connected to VOUT- and VOUT+:
And then this diagram suggests it should be connected to TRIG/...
- 45
0
votes
0
answers
160
views
Wiring power to many LED Strands
I have read as many threads on this site and others related to this, but haven't found any that specifically answers my questions.
I have about 20 WS2811 LED Strands. They are 12V and each LED uses ...
0
votes
3
answers
494
views
wire rotary switch with leds that turn one at a time
I have a 9V battery, a rotary switch (one pole, 5 positions), and yellow LEDs (2V drop). How can I wire it so that as I rotate the switch the LEDs turn and stay on until I reach the end of the switch?
...
- 3
1
vote
3
answers
571
views
How do I wire these LEDs in parallel?
So I got these COB LEDs, and I want to wire them in parallel.
On one side, they have contacts labeled +/- and on the other there are two contacts labeled +/-B
How do I wire these? I am not quite ...
- 153
1
vote
1
answer
205
views
Pre-wired LED series wiring issues
I have 40 LEDs pre-wired with resistors at 12V connected in a series and they won’t all light up. When I test a series of 5 lights together it works fine but any amount over 5 less in a series won’t ...
- 11
0
votes
2
answers
667
views
Wiring button cell without soldering using household material?
I bought some hearing aid button cells for pennies. I want to use them in a toy project that connects a push button switch and an LED. I hook up the LED and switch using alligator clips without ...
- 129
3
votes
2
answers
622
views
Wiring 3 50w LED Chips Off a 12v Battery
I have 3 of the following chips: 50w, 12v chips (https://www.amazon.com/gp/aw/d/B081QBC9MZ?ref=ppx_pt2_mob_b_prod_image) with the following specs:
Features & details
Current: 3750mA
Voltage: DC12-...
- 37
0
votes
0
answers
71
views
Does it Matter Where I Place Resistors on Circuit for Lightsaber RBG LED
I'm trying to figure out the circuit of a Lightsaber I wish to assemble myself using an RBG LED (Tri-Cree RGB EP-X2) and am unsure where I can put the required resistors and also how many I need. I ...
- 1
1
vote
1
answer
127
views
LED Spotlight array issues
I am making a "lightbar" for my vehicle which consists of 7x 6" diameter spot lights linked together.
The specs for each of the individual lights are below:
LEDs: 14x 3w OSRAM
Max ...
- 31
0
votes
2
answers
1k
views
Newbie Assistance - Understanding Fairy Lights
I'm VERY new to EE and am learning the basics. My first goal is wiring up some small lights for my son's LEGO projects, and am trying to sort out the basics here.
Right now, I'm attempting to piece ...
- 103
0
votes
3
answers
84
views
Potentiometer heats up after changing wiring
I changed wiring on my LED array. I switched from a 24 AWG to 18 Gauge cable. I used the following potentiometers. However after changing wiring, all potentiometers (tried new ones and unused) started ...
- 113
0
votes
0
answers
40
views
Multi-Tee Cluster Lights
I have a set of Lumineo 1512 Multi-Colored Clustered lights. At any given point on the line there may be between 2 and 5 wires.
My Goal
I want a level of my tree ...
- 101
-1
votes
2
answers
132
views
I’m an electrical idiot - can you help me?
I have overhead doors at the back of my office building. I wanted to wire up a large red LED next to the light switch so that when employees leave, the light would be red indicating the doors are up.
...
- 9
1
vote
1
answer
176
views
Where are the power, ground and LED connections on this car air conditioning PCB?
I ordered a PCB for my car air conditioning, as the old one was chewed off by rat. I lost the plug and I'm totally confused which wire would fit where. Can someone please help me in locating which pin ...
- 11
4
votes
0
answers
679
views
Powering ws2812b led strip with ATX power supply [closed]
So, I'm planning on doing a little project. I have 8years old ATX power supply from an old PC, and I want to use it to power my LED strip (ws2812b). It is a 300 led strip (5m strip). I know for that ...
- 41
0
votes
1
answer
240
views
Is my wiring for this 5 m 2812B LED strip correct?
I'm building one of these infinity mirror cubes:
I have some questions regarding the wiring.
This is what I came up with:
Green is data, black is ground and red is 5 V power. Every strip has 18 (not ...
2
votes
1
answer
273
views
How do I wire up a 2.3-3 V LED to a 12 V car battery that can have a variable voltage depending if the engine is running or not?
I am making a wireless switch for my car tyre inflator. I have a basic hand-drawn sketch of what I intend to wire up.
Basically, it will be a box with an 50 amp Anderson plug for input (right hand ...
- 267
0
votes
3
answers
2k
views
Can the length of a wire impact SPI transmission?
I'm trying to wire a DotStar LED strip to another one. I have soldered on both ends of the added strip:
VCC to VCC
GND to GND
CO to CI
DO to DI
I'm using SPI to control the LEDs. For some reason, ...
- 99
0
votes
2
answers
1k
views
Am I thinking about this correctly regarding 12V, 24V and 120V LED lighting?
Most of the LED light strips I see are either 12V or 24V, which require a driver to step down the power from 120v at the wall (thus the little black transformers that come with them).
However... I ...
- 113
1
vote
1
answer
792
views
Help with wiring OEM LED turn signals that has 2 voltage inputs
The term AFS is used in the 2nd diagram to help differentiate between the
bulb type turn signals vs the led type.
I'm trying to swap my headlights(without-AFS) to a higher trim version(AFS) on my ...
- 11
3
votes
0
answers
50
views
How to wire an entire room / kitchen with LED light strips? [closed]
As the question suggests, I'm looking into adding LED light strips throughout the kitchen (over cabinet, under cabinet, and kick -- I think under the countertop would be neat, but harder to hide). ...
29
votes
13
answers
8k
views
How can I wire a 9-position switch so that each position turns on one more LED than the one before?
I have a 9-way switch like this guy:
And I'm trying to figure out how I can turn on one LED with position 1, 2 with position 2, all the way up to all 9 in position 9.
Obviously I can repeat all the ...
- 443
0
votes
1
answer
150
views
Implementing led lighting with SR-ZG9101FA-RGBW
So I have this device: SR-ZG9101FA-RGBW
I'm trying to properly connect it, but so far I'm having issues such as being unable to detect device in philips hue app and only two color channels are being ...
- 103
0
votes
1
answer
444
views
how to wire BC547 LED flashing circuit in EAGLE?
I'm studying electronics and I'm trying to grasp the usage of EAGLE. I got an assignment where I must first make this schematic and then wire it on a 3cm x 3cm board.
There is a condition where the ...
- 1
2
votes
1
answer
162
views
Trying to wire in LED to show cooker element is on/off
Hi I'm a mechanical engineer so please bear with me.
I'm trying to wire in an LED to show whether a cooker element is on or off.
Looking at the diagrams below, the easiest way to do this would be to ...
- 21
0
votes
3
answers
520
views
I have 3.1V LED 20mA and wire 20 or more [closed]
How you calculate how much Volt battery you need?
Like:
20 x 3.1V = 62V
....or is it something else?
I want to wire them in series manner.
- 1
3
votes
2
answers
476
views
Alternating 3 LED project
I am making a Halloween costume for my son and it needs some light. Basically he's a character from the Mario Bros universe that carries a traffic light on a fishing pole (Lakitu in Mario Kart). I am ...
- 31
0
votes
2
answers
320
views
Connecting Led in Series with Parallel Switches
I created a diagram for a circuit that i am trying to implement. I have attached my circuit diagram and have been trying to implement it but still have not got it to work. I've checked all the wiring ...
4
votes
3
answers
3k
views
What gauge wire do I need to connect a 3.7V 750 mAh LiPo battery?
I originally thought that I could use any type of thin wire, but after some research, it seems that different voltages and milliamps require different size wire. Am I correct with this?
My question ...
- 93
10
votes
2
answers
3k
views
Wiring up a dolls house with LEDs and a 9V battery
I'm trying to wire up a dolls house that I've built for my daughter with 7x 3mm white LEDs (https://www.jaycar.co.nz/white-3mm-led-4300mcd-round-clear/p/ZD0142)
I'm powering it with a 9V battery and ...
- 103
-2
votes
1
answer
736
views
Variable white LED strip hookup
I plan on assembling 8+ rolls(16.4ft per) of variable white LED strip which has 3 connections. +, CW, WW.
I need to control these 8 rolls with one remote.
Here’s the schematic I have:
PSU to ...
0
votes
1
answer
2k
views
Wiring 3v 20ma LEDs
So I'm going to ask my girlfriend to prom and I'm currently in a digital engineering class in high school and I thought to myself hey what if I made a little board with some LEDs that lit up and said "...
2
votes
1
answer
1k
views
LED strip negative wire connected from the end
Recently I ordered some christmas led ligths from China, and I wanted to mess with it a bit (dimming, cutting it to parts), and i noticed that it is wired differently than I expected.
It seems that ...
- 23
3
votes
3
answers
5k
views
LED's for a project won't work in parallel
I am currently working on a model kit and am wiring up all the LED lighting in parallel and have run into a problem. When using blue or white LED's they work fine in parallel and then when I add a red,...
- 31
1
vote
1
answer
3k
views
Can I add to the wire length of C9 LED Christmas Lights?
I've found plenty on the topic of shortening C9 LED Christmas Lights, but have not found anything about lengthening a string. I don't want to add any additional bulbs, but rather add some additional ...
- 11
0
votes
1
answer
4k
views
How to wire three 10W LED spotlights to one plug?
I have 3 10W LED spotlights that I want to attach to a wooden canopy to light my fishtank. They have live, neutral and ground. They look like this:
It requires AC 85-265V. I could easily attach each ...
user108252
0
votes
2
answers
621
views
Guitar pickup switch LED wiring [duplicate]
simulate this circuit – Schematic created using CircuitLab
Ok so I have a guitar circuit here, 2 pickups, each one has a on/off switch. I then run them into a master vol and a master tone. From ...
- 1
0
votes
1
answer
6k
views
Wiring a 5 Pin LED Switch
So my problem is that I need to wire up a 5 pin LED switch to a motor and a car battery. Seems easy enough... But I need the LED to be on at all times. That is the bit I'm getting stuck with.
...
- 9
0
votes
1
answer
1k
views
The right gauge wire for a 12v parallel wiring to LEDS and heat sink
enter image description here
Hey guys would love your expertise on a project, I'm just a beginner on this stuff.
I'm building an LED panel with a total wattage output of about 480W. My question is, ...
4
votes
2
answers
1k
views
How to power a button's LED within a guitar?
I'm working on a guitar, and the plan is to use three latching push buttons so that each pickup can be turned on and off individually. I'm fairly confident that the following diagram should work for ...
- 233
-1
votes
1
answer
2k
views
Why is wiring some LEDs in series better than wiring them all in parallel?
I noticed a lot of guides for making an LED array or matrix prefer to wire their LEDs in series first and then wire strips of leds in series in parallel. What is the benefit of this Vs wiring them all ...
0
votes
1
answer
2k
views
Car DRL Led wiring beginners question
I bought this relay (http://www.ebay.co.uk/itm/400972235163) and this LED DRL lights (http://www.ebay.co.uk/itm/400757922989).
The questions are:
Can I attach 2 led lights to this relay (as it only ...
- 103
5
votes
3
answers
640
views
How to modify a Minecraft ore lamp to be always on?
Santa was kind enough to bring a really cool diamond ore lamp for Christmas!:)
It's supposed to work by tapping it to turn it on, tap it again - it increases the brightness etc. The problem is that ...
- 259
-2
votes
1
answer
105
views
multiple series of leds off one 9v with switches [closed]
I'm trying to make a fun toy for my toddler. I have some LED's that come with a housing and on/off switch and positive/negative cable, then a bunch of led's and a few light switches I want to put in ...
- 9
2
votes
2
answers
4k
views
Help wiring multiple different colored LED lights
I am working on a project right now, and it is the first time that I have worked with wiring anything. I have 70 LED lights. 10 red, 10 orange, 10 yellow, 10 green, 10 blue, 10 purple, and 10 pink. I ...
- 21
0
votes
2
answers
858
views
Running up to 40M (130Ft) of WS2801 IC LEDS
After many hours of searching the internet for information and gathering what I could, I have run into my final problem that I am having trouble finding an answer for.
I have 40 Meters (130) Feet of ...
- 3