Linked Questions
11 questions linked to/from Is there a way to have more than 14 Output pins on arduino?
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Is there a way to increase the number of output pins in Arduino Uno? [duplicate]
I am an amateur. I know about Arduino, but I am still learning.
And I was making this Bluetooth rover with a camera, ultrasonic sensor, mecanum wheels, air-soft shooter, and sand sample collector. I ...
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How can I connect an 8-relay board without using 8 digital pins? [duplicate]
I'm looking to connect an 8-relay board to an Arduino Uno. A board like this one. However, I don't really want to use up 8 digital outputs if I don't have to. Is there some intermediate circuitry I ...
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Upcoming Project [duplicate]
Hey guys I have a project that will require 20 I/O pins with serial communication from a computer to control each of the pins. I would like something as small as possible would a arduino micro or uno ...
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How can I use Arduino Analog Uno pins as Digital pins? [duplicate]
How can I use Arduino Uno Analog Pins as Digital pins, So that I can Attach more components like sensors to the Arduino? My 13 pins are preoccupied and I want more.
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Why can't I upload a sketch while other components/devices are connected to my Uno?
I wanted to make a fairly simple circuit which would flash a series of LEDs in sequence, using my Arduino Uno (more specifically, a SainSmart clone). I wrote my sketch and it compiled fine. After that,...
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Use all pins As digital I/O
Increase the number of digital pins
There are many post that explain how to use more than just the standard pins on the various arduinos but none of them explain the limitations and the proplems ...
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How do I use I2C devices with Arduino?
I have a few useful I2C components, such as a 16-bit port expander (MCP23017), which I'd like to use in various projects.
What do I need to do to make these work with Arduino? Will it work with any ...
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Increasing the numbers of I/O pins on Arduino Uno
I want to make a game of Tic-tac-toe using an Arduino, LEDs and bouncy buttons. Hence I need nine inputs and nine outputs. But you see that an Arduino only has 13 I/O pins. So is there a way I can use ...
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Direct 5V current based on analog signal
I would like to manage many LEDs from my Arduino - 12 or so - but I do not have the available digital pins to do this. Only one LED needs to be on at one time. Instead, I was hoping to control these ...
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Light up multiple LEDs with standard Arduino Uno
I am trying to find out if it is possible to light up multiple LEDs with a standard Arduino Uno. Say I have 500 LEDs and logically I give each one of them a number from 1 to 500. In my test scenario I'...
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Arduino UNO with CD4510 Counter
I am new in Arduino but I have experience in electronics.
I was wondering how can I make a countdown timer using a CD4510 and an Arduino UNO. I know you would suggest that I should connect my seven ...
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