Questions tagged [components]

An electronic component is any basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields.

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What Arduino and shield components are worth recycling?

I'm building up a nice collection of smoked or otherwise bricked Arduino boards. I would like to save bits that might be useful later. I've desoldered a barrel plug to use when I want to separate the ...
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1answer
41 views

Arduino components

I’m teaching and learning coding with MicroBit and was wondering if these components are compatible with MicroBit. The specific kits labeled for MicroBit are twice the price but the components look ...
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1answer
487 views

How do I choose proper diodes for a 74HC595 shift register with a wired OR connection?

I want to use a wired OR connection to connect some pins of the 74HC595 shift register to an Arduino Digital Input Pin. How do I choose proper diodes for this situation? Maximum rated forward current ...
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4answers
89 views

How do I find my 1N 4007 diodes?

I am a beginner to Arduino, and a relative beginner to electronics in general. I have the official Arduino Starter Kit. I've looked through my bag of components looking for a black diode but was ...
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1answer
64 views

Would an Arduino Uno be suitable for a simple time-based locking circuit?

Background: I'm looking to start on my first real electronics project and I have an Arduino Uno I bought a while back. I've only done a few of the starter Arduino tutorials and that was a while back ...
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1answer
43 views

Arduino RGB component identification [closed]

Can someone help me identify this component? Thanks in advance.
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1answer
138 views

Replacement crystal on Uno for cold temperatures

I want to run an arduino out in the cold (-40), and use the serial communication - I believe that the crystal is the weakest link (the one for the serial chip) - however I don't see any drop-in (...
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2answers
1k views

Why is there a plastic sleeve on my HC-05 bluetooth module [closed]

I would like want to know why the bluetooth module has a plastic sleeve covering it? Is it possible to remove it?
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5answers
27k views

How many sensors can be supported by a single Arduino unit?

I am a beginner in the Arduino world. I made some basic projects of the book that comes with the starter kit (it's was borrowed by a friend of mine) and also I used a humidity, a temperature sensors ...
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1answer
112 views

connecting 3.3V to +3V

Well, I hope this question won' t be buried to the dark depths of this forum as my previous q' s:) But I suppose it won' t this time cause it's pretty short without this introduction part... I have ...
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2answers
104 views

How do I find names of components I don't know?

I recently started with Arduino and I have my starter kit. However, there are some strange looking components I can't recognize. Is there some way to find out the names of these components?
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1answer
199 views

UVB sensing with Arduino

As part of the research I am involved with, the detection (not imaging) of UV (ultraviolet) sources, either emitters or reflectors is an important factor. I am aware of the SparkFun UV Sensor ...
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2answers
341 views

Releasing gas from a bottle via Arduino - opening a valve?

I'm looking for a mechanical component that enables me to do two things: contain a gas in a bottle and if opened, the gas should smoothly flow out (with the same pressure as a child blowing out ...
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1answer
137 views

serial to parallel and nixie clock

I'm going to use this tutorial : https://www.arduino.cc/en/Tutorial/ShiftOut to make a Nixie Clock. I was asking myself if other components that'll be easier to use existed ?
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1answer
164 views

Arduino components for smartening my current doorbell

I would like to modernize my current (dumb) doorbell with arduino but as this is my first project, I need some advice on what I need to accomplish this :) So, currently I own only Raspberry Pi 3 and ...
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1answer
242 views

What are some “must-have” sensors or shields for an Arduino robot or motor?

I am starting to learn Arduino and wanna make some projects.which components will I have to buy?please help me.
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1answer
47 views

Looking for a Mega 2650 drawing or picture that shows the components labeled

I am Looking for a Mega 2650 drawing or picture that shows the components labeled. I've seen the schematics but didn't find a labeled assembly drawing yet. Should this exist? Thanks
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2answers
73 views

(HELP)How to read Physical Dimensions in datasheets

Sir/ Ma'am, . How to read the dimension labels of this IC?
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2answers
2k views

Are there flexible pressure sensors for Arduino that can measure forces of at least 600 lbs?

I'm in need of flexible pressure sensors that can read how much force is exerted on someone's foot while running (these sensors would be placed inside the shoe). Since pressure can often be three ...
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1answer
223 views

Failing to read from DHT22 when multiple components on breadboard [closed]

I've been trying to use DHT22 along with many other sensor components connected to breadboard. It seems to fail reading from the DHT22 when multiple components are connected and reads only when the ...
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1answer
442 views

Are there ultrasonic transducers which are able to produce a “chirp” sound wave?

I'm working in a ultrasonic radar project and the supervising teacher wants us to produce a chirp sound wave (a frequency-varying sinusoid). I'm familiarised with the usual ultrasonic module, but as ...
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1answer
129 views

Diode lights generate false interruptions

I have spent quite a considerable time debugging my code that was triggering false interruptions. I have found out that the source of the error were the diode lights (on the picture). I would like to ...
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4answers
6k views

What components I need for a small GPS tracker

I am new to Arduino and want to create a graduation project for my university. I am thinking to create a GPS tracker that can be attached to a cloth to track kids, for example. So the requirements for ...
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1answer
220 views

Are there any ePaper modules that are bigger than 2.7 inches for arduino

I am looking for a large ePaper Display for the Arduino. The issue is is that I cannot seem to find one any larger than 4.5 inches in size. That will be compatible with arduino. Even with a controller ...
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3answers
96 views

Solutions for displays?

I am trying to find cheap options for displays about 3 x 6 inches to display time, weather, simple clip-art type images, and other marquee messages. What are my best options to work with arduino if ...
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1answer
62 views

What requirements should components have to work with Arduino (UNO in particular)

I am fairly new to the whole concept of Arduino and electronic engineering in general. Recently I bought myself an Arduino UNO and I'm wondering what "non off the shelf" components will work when I ...
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1answer
514 views

Feasibility of a Wi-Fi Positioning System

In the project of guiding a sight disabled person in a known environment, we need to have a precise way of figuring out where the user is. Our current solution is to use WPS. This is however our ...
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3answers
9k views

Help with parts identification from arduino starter kit from aliexpress

Ordered an arduino starter kit from aliexpress Link The parts list they provide (as a jpg on the order page) is vague and not very descriptive, I've gone through most of the parts and am down to ...