Tagged Questions

4
votes
1answer
119 views

Relay takes time to close

I am trying to control a relay from an Arduino compatible board. When I try to activate the relay from the Arduino it takes at least a second to switch closed and sometimes does not switch closed at ...
1
vote
0answers
50 views

Arduino - Solenoid Valves and Pumps Control (Relay Shield & Motor Drive Shields)

I’m trying to control two Diaphragm Pumps (12VDC/4.3W) and five Solenoid Valves (24VDC/10W) using Arduino Uno & Arduino Display Module. I know there are many different ways to control these ...
0
votes
0answers
30 views

LCA710 SSR vs. a “power transistor” for electric strike shield?

I am starting on a design for a new Arduino shield that will be used to trigger an electric door strike. My old design for this shield used a mechanical relay, mostly because I had one around at the ...
3
votes
1answer
110 views

Replacing a Wired Controller with an Arduino Uno: Relay Alternative

So, I have a simple robotic arm that has a wire controller you plugin into it. The controller has 8 pins. I haven't played with it too much but I know that the far ends are power sources and the ...
7
votes
3answers
26 views

How can I safely connect both Arduino and a 120V 10A circuit?

I'm building a thermostat, and the idea is to have it fire one of two 120V 10A circuits (one to heat, one to cool). I have two of these modules for the relay and I ...
1
vote
2answers
70 views

Need help on Arduino and relay control

I am trying to get my Arduino to control a relay without luck. I'm able to see the LED flashing on the relay board indicating that the relay should be throwing, but the circuit is not being closed. ...
0
votes
1answer
41 views

What is the analog pin for on a Phidget 3051 Dual relay board?

I recently purchased a Phidget 3051_1 Dual Relay board with the intention of using it to switch on and off flourescent lamp ballasts (20W tubes) over a fish tank by connecting the relays to 110VAC and ...
3
votes
4answers
249 views

Can an Arduino use a 12 V relay?

So I wanted to play around with relays and clearly got it wrong even before I got started. I wanted to control a 12 Volt fan - thinking that it would have a capacity of 12 V to control.. But now I ...
0
votes
0answers
60 views

Safe approach for 120v power box w. 2x Dimmable outlets?

I'm looking to create a 4 outlet AC box (2 of which dimmable by arduino) and am intending the merge these two tutorials. Although i'm not a certified electrician I do have experience with home ...
0
votes
1answer
74 views

Peristaltic pump

Can a peristaltic pump push air? Let's assume you have a 2m of tubing, and you pump a bunch of water through it. Can you remove the tube from the water reservoir so it is open to the air, and ...
1
vote
1answer
125 views

Soft-Starter PWM Noise

I have developed a soft-starter for a project of mine. I am using an Arduino Uno to generate PWM to an OAC-5 relay that turns on and off the voltage across my bridge rectifier. Here is a simple ...
1
vote
3answers
255 views

How do I control a two 12VDC 10A motors using an Arduino?

I am new to arduino and electronics in general but I need some help on a project I am working on. Essentially I want to be able to control the state (on/off) and direction of two linear actuators that ...
5
votes
2answers
171 views

How to process voice commands using ATmega or Arduino?

For a project I need to start my PC using voice command. I thought to made up an voice controlled system to turn on my PC. As far as I know, when I press the turn on button-2 pin's on the motherboard ...
0
votes
2answers
276 views

SainSmart 5V 4 Channel Relay momentary switch

Hey all i am wanting to hook this relay up here: What i am wanting it to be hooked to (output) is the pwr and reset switch on a PC motherboard to act as a momentary switch: I am also wanting to ...
1
vote
1answer
171 views

Use power line to communicate between devices - simple communication

So I am a google programmer getting interested in hardware hacking. What I want to do: Use Arduino or a similar microcontroller to control the lighting in my house, of course for as cheap as humanly ...
-6
votes
1answer
111 views

Fried Arduino uno pins. yet I can blink led 13. anything plugged in does nothing [closed]

I don't really know what happened. I was using a 5 volt relay and now nothing works. I can upload sketches to it and blink led 13 but anything plugged into it does nothing. the 5volt and grounds don't ...
1
vote
2answers
493 views

Sending audio signals to output device through relay

I've created a paper speaker through this tutorial, except instead of conductive thread I used copper tape for the coil. When I hook it up to a device that is known to give off lots of sound, the ...
1
vote
2answers
268 views

Switch hookup with relay (arduino)

Hey all i have the following 5v relay board: Please ignore the light bulb hook up. That was an example on the website that had the same relay :) And i am looking to hook one of the relays up to a ...
3
votes
3answers
521 views

Simplifying a relay network

I'm currently trying to design a relay network for a piece of laboratory equipment (PPMS). I would like to describe what the setup is, what I am doing now, what I hope to do, and how I hope to do it. ...
3
votes
2answers
3k views

Selecting the right relay

I'm looking for some advice on what type of relay I should use for my circuit. I have a 5v power supply and I want it to act just like a switch. I will be controlling it with an Arduino like ...
-2
votes
2answers
851 views

relay connection, how?

I got this on hand http://www.sainsmart.com/arduino-pro-mini.html, how can i connect my Arduino Uno to control it? Can someone help with an example connection provided to the Arduino side to control ...
1
vote
2answers
670 views

8 channel 5v relay

I bought an 8 channel dc 5v relay module for Arduino from an on-line store. When i power on my system, the modules become really hot. My connections are, Vcc to 24vdc Gnd to ground In(1-8) to the ...
4
votes
2answers
1k views

Driving Solenoids from Arduino

I was wondering what the best way to run a solenoid would be from an Arduino board. I was thinking about using a MOSFET that runs into a relay to turn on the solenoid but am not sure how to go about ...
3
votes
4answers
3k views

Optocoupler/relay type for isolating two DC circuits

I have recently started experimenting with an Arduino and would like to control a seperate circuit (for example, a small and cheap digital video camera powered by battery) from my arduino. Basically ...
5
votes
5answers
4k views

Simple and safe solution to control a power plug with Arduino or PC

What solutions are available to control a power plug (or even if possible a light socket), i.e. turning it On and Off? I have looked for xbee/zigbee solutions but there doesn't seem to be a solution ...
0
votes
2answers
2k views

Choosing a relay to control outlets from Arduino

I'm working on a project that involves an Arduino Uno and some external electronics. I have a 12 V power supply that will connect to an outlet, and I want to be able to control this power using a ...
0
votes
1answer
440 views

Alternative to wake on LAN

I need to be able to power my office pc up from home so I can remote in, but my router has proprietary voip firmware that's getting in the way. I've been looking and looking, but I'm just not turning ...
1
vote
2answers
564 views

Advice on relay set-up

I'm trying to build a Christmas light show, using a netduino (arduino clone). There are plenty of tutorials on the web, however they always lends themselves to US power supplies. Could someone please ...
1
vote
4answers
4k views

Not sure how to wire my 5VDC to 120VAC arduino relay board

I have a board with 8 relays on it that will take 5v from my arduino and the relays will flip on my 120VAC devices. I'm not an electrical engineer by any means so I am wondering how to wire my 120V ...
0
votes
2answers
1k views

120v variable resistor controlled by 5v?

I want to do some work with automating christmas lights later this year and my friend and I think relays may be the way to go. After a little more thought, I think it would be cooler if the lights ...
0
votes
1answer
480 views

What type of relay should I use to trigger an apartment door buzzer?

I'm working on my first hardware project, an SMS web app that will submit (via Arduino) a signal to press the buzzer at my apartment building. As such, my vocabulary might be way off. That said, I ...
2
votes
1answer
406 views

How close to ground is close enough for a relay?

I'm building a simple circuit based on a relay and transistor to switch a fan for use on my boat. A digital pin from an arduino is connected to base of an NPN transistor, the emitter to ground and the ...
5
votes
2answers
2k views

How do I connect a relay and transistor to an Arduino?

Ok, so this is what my relay looks like. I can't figure out what pins I hook the arduino and transistor to, and what pins to hook the the other device. Please help.
1
vote
2answers
2k views

5V Relay and Arduino to control a 6v nerf gun

I am super confused how to hook up this relay http://www.radioshack.com/product/index.jsp?productId=2062480 The nerf gun has a spdt switch for the trigger and runs on 4 AA's .
5
votes
1answer
2k views

Virtual Wire Control

I'm running Virtual Wire between two Arduino's and, so far I've been able to send characters and receive them on the other side. Problem is, how do I turn this received 'A' (or whatever I send) ...
0
votes
1answer
122 views

Relay Tester Box with BlinkM

I'm trying to create something similar to this project and was looking for something cheap to use in place of the Relay Tester Box.... Any Ideas?