Questions tagged [switch]

In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another

21 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
59 views

Turning on controller with button and turning off with a timeout

I am making a device controlled by an ESP 8266 and am wanting to save power by having it power down when not in use. The desired behavior is for a momentary button press or vibration sensor activation ...
2
votes
1answer
125 views

Digital Input using a button doesn't work properly when using it to control a relay

I'm trying to control a relay both via Bluetooth and using a switch. The problem is that, when the LED is off, I can turn it on with the switch but then if I turn off the switch the relay will stay on....
2
votes
0answers
814 views

Switch on/off LED 24V using a MOSFET

I try to switch on/off IKEA Ledberg LEDs which are powered with 24 V using the setup from this tutorial video: https://www.youtube.com/watch?v=sVyi7yWuXxs I use a IRLB8721PBF MOSFET. When I switch ...
2
votes
0answers
547 views

Difficulty connecting arduino ethernet with PC using a switch

Facing difficulty connecting arduino ethernet(w5100) with PC using a switch (Dlink). When both are connected directly(p2p) using ethernet cable, arduino device can be pinged. However, when connected ...
2
votes
0answers
325 views

How to recreate this basic ALPS switch board in Arduino?

I want to recreate this existing ALPS switch board (the board on the left) in Arduino, so I can control the switches (and 3 memory + 1 menu buttons) from my laptop. The ALPS switch board connects to a ...
2
votes
0answers
251 views

Adding a kill switch for servos with states - blink without delay code

I have many LEDs and two servos connected to one Arduino Uno, and the servos are programmed to move randomly indefinitely. However, I would like to install a kill switch for the servos by reading a ...
1
vote
0answers
37 views

default in switch doesn't appear to execute

I have a situation where the default case in my switch statement doesn't appear to execute as expected. I wonder if there is some subtlety I'm missing here? Given the following enum: enum ...
1
vote
0answers
49 views

How can I get the count of pulses of two encoders on the serial monitor?

I have two encoders; I connected them to pin 2 and 3 and I want to count the pulses of them to make two DC motors to work until it reaches a specified number of pulses, than stop working. I have ...
1
vote
0answers
544 views

limit switch and external interrupt

The INT0 pin of a custom Arduino-like board based on Atmega16 is configured in INPUT_PULLUP mode and connected to a N.O contact of a limit switch, the other end of the switch is connected to GND. in ...
0
votes
0answers
57 views

What is the best way to replace the buttons inside a car remote chip so that it can be controlled via Arduino?

I have a car remote that looks like the following I would like to replace the buttons with some sort of switch or relay that can be programmatically controlled via an arduino unit. Would a simple ...
0
votes
0answers
24 views

ESP8266 connected to a HIGH pin and DPDT only works sometimes. Works everytime if connected to 3V3 pin

I have a Wemos D1 Mini hooked up to a DS2Y-S-DC3V DPDT switch. When I have the coil ends are hooked up to a pin (D2) and ground, it will click when I set the pin HIGH. It should click again when it ...
0
votes
0answers
132 views

Made a light controller for the holidays

I am a new the world of Arduino. I found on YouTube, how to build a light controller (https://www.youtube.com/watch?v=WvG9c84ApFA&t=39s). I follow every step but it doesn't work. Here are some ...
0
votes
0answers
329 views

How can I make a fingerprint scanner to work as a toggle for a servo motor using Arduino Uno?

Arduino Fingerprint Project Help Please!! I am a beginner and using Arduino Uno, a fingerprint sensor and a servo motor to build a door lock (school science project). I followed many videos and ...
0
votes
0answers
805 views

Nested “switch” statements menu

I know that menus were discussed perhaps a thousand times here and everywhere. But using a ready solution is not something that I'm looking for because I know I won't learn the concept if I use them. ...
0
votes
0answers
88 views

Term for Two-Channel Analog Switch Module/Digital MUX

I'm looking for this 16-channel item: ...But just 2 channels. Basically one lead tells if the singal lead should travel down path A or path B. The advantage it has over the 16-channel is that it only ...
0
votes
1answer
970 views

TinkerCAD switch seems to be not working (always closed)

I am using TinkerCAD to simulate the functionality of a slide switch. Please comment if you think this question is off-topic. /* LiquidCrystal Library - Hello World Demonstrates the use a 16x2 ...
-1
votes
1answer
803 views

Using an NPN transistor as a switch to turn on/off a DC Motor

I am trying to control a 3V DC motor (FA-130) with my Arduino Uno, and am trying to do that using an NPN transistor (2N3904) as a switch, as shown in this diagram. I used the Blink example and ...
-1
votes
1answer
80 views

Sketch starts and keeps counting on external power supply but not usb

Thank you for the add, total newbie here (electronics and arduino) on his first project. Trying to make a counter for a hay baler with two HAL effect sensors, (pin 5 & 6) and outputting to an I2C ...
-1
votes
2answers
94 views

Button Switch arduino

I'm trying to use my button as a switch (the led goes on after I push the button and the led goes off when I push the button again). I know I have the right circuit, because I also used a code from ...
-1
votes
2answers
998 views

Using Arduino or ESP8266 as a switch to turn on a 12V DC Fan

I am new to the community and this is my first question. Hope it turns out to be a nice question :) Me and my friend are preparing a senior design project on home automation. I have several things in ...
-1
votes
1answer
177 views

How to control RC power switch with Arduino-/Adafruit-Board?

I want to control (switch on/off) a solenoid valve via an RC power switch and an Adafruit M0 Feather Bluefruit LE. The RC power switch is this one, and this is the Adafruit Board Pinout. My ...