How wires connect to terminals and to each other; coloring and organization schemes; appropriate wire selection and installation techniques

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0answers
5 views

Need to connect neutral wire?

In 3 phase machines have L1,L2,L3,N and PE(Protective earth).some time Neutral wire is not connected to the power supply.But,Machine have a neutral wire.What will happen if not connect neutral ...
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0answers
10 views

Replacing dumb wall switch with smart one (wiring) [migrated]

Based on the first diagram below (which is the current wiring for my wall switch), is the way I have the second diagram set up correct? My biggest point of confusion is the line/load wires. Judging by ...
0
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2answers
33 views

Flat profile IDC type connectors and cable replacement

Hello guys I am looking to replace IDC connector on my project board with something flatter like the ones found in laptop. The problem as I do not have any guide to go around to look for the right ...
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3answers
118 views

What's the reason for wiring a relay this way?

I came across the following automotive wiring diagram: One thing I don't quite understand is the way they wired the relay. I've got two main questions. It appears to me that they used the exact ...
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0answers
13 views

Wiring residential internet router through existing smoke detector [migrated]

My internet router is setup at one end of the house thus the other end gets bad coverage. I'd like to move it at the center of the house to provide better coverage. The gear in question is located in ...
4
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3answers
248 views

Design of an electronic device to disable remote access ability of contactless payment cards without visible alterations and damage to the card

Question: How could I build an electronic device which disabled the remote interaction functionality of contactless payment cards while not affecting the functions which are accessed via the on-card ...
2
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1answer
42 views

Questions About Wiring High-Power Robotics Motor Chassis

I recently ordered a Wild Thumper 6WD robot chassis to build for a school robotics club project. I've built smaller, simple robots before, but I haven't built one with such high power requirements ...
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1answer
57 views

ACS758KCB Wiring Diagram

I am using the ACS758KCB Hall Effect sensor for a project. On the front page of the Datasheet it list a .1uF capacitor between Vcc and GND, in addition it lists a capacitor, Cf, between GND and ...
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1answer
59 views

Where do I connect earth wire?

I'm trying to use this delay timer to control an exhaust fan. I have a 3 pin connection (with earthing wire) powering this fan and it works fine. If I have to insert this delay timer module in ...
0
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1answer
48 views

Wiring RS485/422 to RS232 converter to a given device pins [closed]

I'm trying to establish a full-duplex and then a half duplex communication and need to wire a device output to an RS485/422 to RS232 converter. Here is the device output pins for full and half ...
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0answers
44 views

DIN rail buttons and pilot lights

I need to build a power distribution unit for a cabinet which will have upstream: Main circuit breaker (inside) Residual current device (inside) Emergency button (outside) Main power button ...
1
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2answers
104 views

How do I splice multiple (more than two) wires in-line?

When I look at many wiring diagrams, like this one: (source), I see wires which need to be connected to multiple points. This suggests that the wire will require multiple three-way splices in ...
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3answers
360 views

Shall I connect inverter with boat GND?

A friend of mine is building a boat. On this boat, he has 12V batteries with a 230V/13A transformer. Recently somebody suggested he should connect the null with the ground. With DC, this is common ...
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2answers
35 views

Wiring CanaKit Relay and Southco EM-05 Electronic Lock

I am attempting to wire this relay http://www.canakit.com/4-port-usb-relay-controller.html to this lock http://www.southco.com/en-us/em-05. I have done some work with Arduinos before, but I am not an ...
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2answers
97 views

Using LM2575 switching regulator

The LM2575 is a step-down voltage regulator. I want use it to step down from 9V to 5V in order to power my Arduino board and Bluetooth module. However, I'm not sure how to wire this into my ...
1
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1answer
49 views

How do I wire speakers in multiple rooms to one amp? [closed]

I would be happy if anyone can help me with the following project I wish to build : I have an old amplifier 4ohm impedance with A and B zones, support for mono and stereo and playing both A and\or B. ...
1
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1answer
56 views

What's wrong with my static relay connections?

Im trying to use a static relay for the first time. It is an HFS5, supposed to turn on/off at ~5V. Soldering is not clean but I have triple checked with a multimeter that the connections are ok on ...
0
votes
1answer
73 views

How can I connect a thin relay to a 220V wire?

Im almost an absolute beginner in the electrical field. I have bought a relay and wires (for a 60W light), however once unpacked I see that the relay is very thin. I have tried to use a crocodile ...
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3answers
87 views

Connecting parallel DC loads

Consider the following power supply interface. I'd like to power a number [1,N] of bitcoin miners, 12V, 5A each one. question is: do red wires must be connected with V+ pins ? do black wires must ...
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2answers
97 views

Need help identifying a strange symbol in a wiring diagram

I have this simple wiring diagram for an old tractor, and there are some symbols that look almost like diodes, but not quite. I have highlighted most of them in red in the attached image. Do these ...
0
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1answer
83 views

How to wire Mean Well RT-65D power supply?

I'm not very familiar with electronics. Especially I have never wired a 230 V power supply manually. There is a Mean Well RT-65D power supply. I have a rubber connector with open wires blue, brown ...
0
votes
1answer
31 views

Connecting a surround system without jacks [closed]

I have recently bought a house which has already the sound cables passing through the walls. These are raw cables without any jack connectors. My question is, when you go to buy a 5.1 surround ...
0
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1answer
145 views

Splicing barrel jack shapes

TL;DR: How can I "splice" two different cords for different barrel jack sizes? I'm rather new to this sort of stuff, so bear with me here. I am attempting a project where I need to create a port on ...
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2answers
234 views

How to wire up a single-phase electric blower motor

I have an Electro ADDA C80M-2 0.75kW single-phase blower motor that I need to hook up, switched, to power a cyclonic dust separator that I've built. I thought it would be a piece of cake: pop off the ...
0
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2answers
517 views

How to determine bipolar stepper motor wiring (came from a 3.5 inch floppy drive)?

I have extracted a small stepper motor from a 3.5 inch floppy drive, that I intend to use with an Arduino or Raspberry Pi. The problem is: initially a thin ribbon cable was attached to it, with no ...
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6answers
1k views

Why is the chassis used as ground in automotive electrical circuits

Automotive electronics generally use the metal chassis as the negative ground connector for the DC circuits. Obviously this saves something on wiring. Is there an electrical reason for this approach? ...
2
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2answers
455 views

Do they make triangle-shaped headers?

I've been working with some PIR sensors from Panasonic, and I was wondering if there are any types of female headers/connectors that I could use to wire the three pins of the sensor without directly ...
2
votes
2answers
190 views

Reading corresponding pins from a circuit diagram

I am completely new to Arduino tinkering and am trying to make sense on how to wire a 8x8 LED matrix using the following diagram: This chart is supposed to correspond to this 8x8 LED, 12x12pin LED ...
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5answers
115 views

How do metal cases work with connectors & isolation?

I have troubles understanding how do metal cases behave in some cases. Case 1: I made passive attenuation box for amplifier(basically L-pad resistor), simple configuration: Amplifier => attenuation ...
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1answer
66 views

What will happen if i connect a bulb across 2 AC sources of different voltage [closed]

I was just trying to decode whats happening in my house wiring I have a Fault line indicator bulb for each phase,Sorry i dont know How its connected or anything ... Recently i installed Home ups And ...
0
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1answer
101 views

Adding diodes to easy driver stepper motor driver

I had an easy motor driver damaged by removing the motor while the drive was energized. I sent an email to Brian Shmalz to see if there was anything that could be done to protect the board in these ...
1
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1answer
86 views

Trigger Relay Only from one specific grounding path?

I have a car wireless door lock system I want to modify. The basic operation is that when the key fob's button is pressed, a light relay is triggered, to flash some of the car's lights, to indicate ...
0
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1answer
55 views

What is a good single conductor wire-to-wire connector?

I'm currently using 3-position JST connectors with two of the wires cut off, but this is unsatisfying. The 3 position JST is also bulkier than I'd like, and has lots of "barbs" and corners to catch on ...
0
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2answers
104 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 ...
0
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2answers
212 views

Power supply for 144 LEDs in parallel?

I appreciate any help as I try to figure this lightbox project. I need to wire up to 144 3V (built-in resistor) LEDs from flickering tea lights (normally battery powered). Not sure how many to wire ...
1
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1answer
74 views

Current “jumps” from one wire to the other

I have cable with two 1.5mm wires in it. Why does my test light show voltage in both wires even though only one of them is connected to 220V AC grid. // Also there are old cables with metal jacket ...
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2answers
237 views

wiring leds for car brake lights without throwing warning lights [closed]

Im working on led tail lights for my vehicle. the standard bulb is a 21w 12v bulb. what i need to try and figure out is whether or not i am able to recreate this same load using leds without a load ...
2
votes
3answers
1k views

Why is there a potential difference between neutral and ground (earth)?

I was surprised to find that bridging neutral and ground in a socket at home tripped the RCD. Measuring with a multimeter, there is indeed 0.1 V between them. If the RCD trips at 30mA that would mean ...
0
votes
1answer
37 views

How to test/connect the CAP-150 capacitive sensor

I am evaluating a few sensors for an application at work, and I'm having some troubles figuring out the correct way to connect/test this sensor: Gems Sensors' CAP-150. Datasheet here. I want to ...
0
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3answers
205 views

Wiring Harness Software

Is there any software or method out there that makes laying out a wiring harnesses easier? I can draw a wiring harness out in just about anything, but mapping all the wires, colors, lengths and ...
0
votes
2answers
116 views

How do you power 6 servos

I have 6 MG996 series servomotors. A single motor can be controlled by an Arduino board using a 5V power supply. Some specifications Running Current 500mA - 900mA @ 6V Stall Current 2.5A @ 6V ...
2
votes
1answer
110 views

Passing USB signal over short SATA cable and connector

I am working on a prototype device and I will have a daughter-board mounted at an odd angle in a custom enclosure. I need to get a USB signal, and a few extra GPIO type wires, over to the board. I ...
1
vote
4answers
132 views

Large Wires on a Perfboard

I am working on a project on Perfboard which involves controlling a motor that draws about 10A, and I am using 18AWG stranded wire to connect the MOSFET on board to the battery and motor which are off ...
0
votes
1answer
74 views

When routing power how is a safe current-carrying wire configuration determined with multiple wires?

I've been looking at a device/power-supply pair I was sent recently for a project. The device specs say it needs 24V and will draw 10A max. The power supply provides 24V @ 9A (14A peak). The power ...
2
votes
1answer
51 views

Taking power from two different feeds

Probably a silly question I know but I'm not all that good when it comes to wiring but at the same time don't want to blow myself, or my car up! I have a set of sidelights/ daytime lights that take a ...
4
votes
3answers
470 views

Extending LED length

Completely new to electronics, I've just begun to play with an Arduino. I was wondering, if I wanted to make an LED sculpture, what is the correct way to extend the legs of each LED so that they stand ...
0
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3answers
162 views

SPDT Relay with 8Pin

I needed a SPDT relay with 240Vac so I bought this relay from Maplin http://www.maplin.co.uk/p/15a240vac-spdt-miniature-relay-n07aw But I am heaving problem to wire this relay because it has 8 pins ...
0
votes
1answer
56 views

Sensor & power wire length & connection inquiry

I'm an experienced SW engineer, but a noob when it comes to .NETMF & hardware. I've started working on my first project (garage controller that will monitor & control the open state of the ...
0
votes
1answer
227 views

How can I power this LED Matrix?

I'm controlling a 16x32 LED matrix with an Arduino and have it wired correctly (I think) but I'm having trouble with the power. I tried to follow the instructions from Adafruit but was unsuccessful in ...
0
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0answers
156 views

3.5mm to 3.5mm female mount wiring

I am trying to make a detachable mic mod similar to this: Full Description I have done everything in the pictures but something in the wiring is wrong or I have the wrong cables eg: the mic ...