Questions tagged [hardware]

The physical circuitry and other components of a machine or device. This is distinct from the program code running on a device, which may be called software or firmware.

Filter by
Sorted by
Tagged with
1
vote
3answers
7k views

My Arduino isn't showing up on my computer. What should I do?

You have your spangly new Arduino board, you've installed the software, and you plug it in. Nothing happens. Diagnosing problems may be a little tricky for the beginner, so what hoops should you go ...
16
votes
1answer
8k views

How does serial communications work on the Arduino?

With reference to the Arduino Uno, Mega2560, Leonardo and similar boards: How does serial communications work? How fast is serial? How do I connect between a sender and receiver? Please note: This ...
41
votes
5answers
43k views

Difference between Arduino.cc and Arduino.org

Recently I have noticed that there are two arduino sites, arduino.cc and arduino.org. They both have the Arduino logo and both sell what seems to be official Arduino boards. Also, arduino.org came ...
4
votes
2answers
5k views

How to increment and decrement an output voltage by using two buttons?

I'm trying to create a code using an Arduino Uno board to increment and decrement the output voltage of the Arduino Uno which is 5 volts and I need to step it up to 10 volts which I have done below. ...
0
votes
2answers
1k views

Making three led's blink at different times in Arduino

I have a breadboard connected to an Arduino Uno, 220k resistors connected to an led, of course it has a common ground and a pin connected to 5v. All pins are digital. Now, I want led 1 to turn on ...
14
votes
2answers
20k views

Controlling Floppy Disk Drive with Arduino

I am having problems controlling a 3.5" Floppy Disk Drive with an Arduino Uno. I have the floppy disk drive powered with a computer power supply that is switched on, and the Arduino powered by my ...
16
votes
4answers
4k views

Burning Arduinos one after another

I very accidentally caused a short-circuit to two completely different cheap (under 4$ each) Arduino Uno clones, rendering Windows sound alert for unplugged USB several times. This subsequently led ...
2
votes
2answers
21k views

avrdude: ser_open(): can't open device “\\.\COM3”? [closed]

My computer cannot detect my Arduino Uno anymore, Reset button- > L led light blinks and it turns on forever Arduino 1.6.5: Tools->Port (greyed out) I remembered that previously it wasn't like ...
1
vote
2answers
89 views

Is there some hardware that can be used to upload sketch source code via USB flash disk (Automatically By plugging it in)

Well am asking this basically to know if it is possible to create a bootable flash drive that automatically uploads any source code onto the arduino just like creating a bootable flash drive when ...
0
votes
1answer
126 views

No Data Received on Serial Port & Unable to DFU Reset. Advice?

Having a problem running my original code that I tested last week, which worked on multiple days last week. I tried to do a DFU reset and update the BootLoader, but it didn't work. I checked the ...
7
votes
5answers
2k views

When Raspberry Pi is preferred over Arduino

We are doing some projects in class. One of my friends is doing a weather and humidity station using raspberry Pi with a couple of sensors and LCD. I have a little experience in Arduino. So I asked ...
1
vote
2answers
2k views

Which kind of diodes I should use in buttons/keys matrix input? (Making gaming keyboard)

When making matrix input of NxM columns/rows with push buttons, there should be a diode next to each button to prevent "ghosting" and able read many keys pressed together correctly. There is a lot of ...
0
votes
3answers
1k views

Can a Ethernet USB Dongle be instead of ethernet shield for arduino?

Can a Ethernet USB Dongle be instead of Ethernet shield for arduino in order to cut costs?
0
votes
1answer
2k views

Esp8266 V12 Wiring

I have tried a Google search and cannot find any place that tells me exactly how to wire the version 12 esp8266 , How should it be wired for normal operation and for flashing ? I am designing a diy ...
-1
votes
2answers
155 views

Industry Standard for Single-Board Computers?

Do Arduinos, or any other single-board computer, come in any sort of industry-standard form factor? I'm trying to sell management on using Arduino, but they are stuck on the question "what if Arduino ...