Questions tagged [input]

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1answer
30 views

arduino mega buzzer output

I have project by Arduino mega which have 22 inputs and 22 outputs and buzzer reset and output reset pushbuttons , it have two status if the input is high(not continuous ) the output will on and the ...
0
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2answers
51 views

Turn on relay for amount of time by continuous input

I have a project having two input status first the input is not continuous the output buzzer relay will be on for 10 seconds and then turned off or it can be off directly by push button the second ...
1
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0answers
27 views

Changing the servo motor operating direction using arduino

I want to turn the servo motor 90 degrees with the first double high inputs, then I want to turn the motor 180 degrees with double high inputs, but the motor turns 180 degrees with one high input. ...
2
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2answers
63 views

Measure the time between 2 inputs

I am making a small project, and for that, I need to measure the time between 2 inputs. basically, a program to measure the time elapsed from when digital pin 2 is high to when it again becomes high.
2
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2answers
53 views

Rasberry Pi Controlling Arduino - Reads “Ghost” Input - Doesn't Complete Logic Loop

I am using an Arduino Atmega2560 clone, I have used it many times before with satisfactory results - although I haven't used it with my Rpi before. My Raspberry Pi is model 4 (B I think?). #define ...
0
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1answer
50 views

Attiny85 Clone Cannot set P1 to input [closed]

Everything i read about the chinese Digispark attiny85 clones says you can use p0-5 as digitlal I\O (p5 as after fuse reset) Simple test code for a button will not let me use P1 as an input tied to a ...
2
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1answer
61 views

Analog input voltage rises when motor is working

I'm making automatic water plant system. I'm using: Arduino Uno 3.3-6V water pump -https://www.amazon.com/Vipe-Micro-Submersible-Motor-Water/dp/B01N0X3CW4 Capacitive soil moisture sensor - https://www....
2
votes
2answers
48 views

Plotting data from Arduino and using the serial monitor in parallel

I'm very new to the Arduino world so bare with me. I would like to plot live data that I receive from my arduino. I use the Serial Monitor to read user input, show text, etc. The only way I found to ...
1
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1answer
117 views

Unable to use analog pins as digital inputs

I want to use the analog pin A7 as a digital input pin. As stated in the Arduino docs the analog pins can be configured in the same way like any other digital pin. However, when trying to configure an ...
2
votes
1answer
33 views

Input state is stuck HIGH when function called using input also uses same input to call another function

I'm writing a choose-your-own-adventure style project for a class project. My Arduino Uno is set up with a 16-digit LCD display and two pushbuttons with pulldown resistors. I'm wanting each function ...
0
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1answer
31 views

Streaming integer data from Arduino to Java, integer greater than 0xFF

I need to send how many milliseconds elapsed since the beginning of the time the arduino runs to java using Serial.write(). However, the largest integer that I can throw in there is 255, naturally ...
-1
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2answers
41 views

Certain componenet does not seen to respond when given voltage

I am using a part off an electronics set I got a long time ago. It is off a electronic set called snap circuits rover deluxe Its a disc launcher and I have wired it to how it seems to want to be ...
5
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2answers
318 views

Multiple Push buttons to one input

So I am trying to use one input to control an LCD display. The goal being that once one of the buttons is pressed it delivers a message. I have watched quite a few tutorials and can get the program to ...
2
votes
2answers
144 views

How to wire a three-pin on-off-on switch for reading input?

I would like to read the output of an on-off-on switch with my Leonardo board, but I have very little knowledge of electronics and don't know how to wire it up. This is the switch in question: E-...
-1
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1answer
23 views

Longruner Nano ATMega 328P input stays HIGH for 1s longer than the reality

I have a Longruner Nano ATMega 328P (copy of arduino nano, main difference being the USB connector, CH340 instead of the usual FT232, from what I could find using google searches). I wrote a super ...
0
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0answers
42 views

Why Serial.begin does not use INPUT_PULLUP on RX

Im programming esp32 using arduino framework and today i run across some noise issues on serial lines and i went to see the underlyings of the Serial.begin() method. In the execution of this function, ...
1
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1answer
50 views

Is it possible to exit a loop on the change of an input state?

I would like to exit a particular loop if the state of an input changes from LOW to HIGH. This is the current loop: void brakeFade() { pixels.clear(); pixels.setBrightness(255); pixels.fill(16711680, ...
0
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1answer
82 views

Using the LED pin for input

I have an Arduino-like device with few GPIO pins (DigiSpark clone). It is based on an 8-pin AtTiny85 IC so there are Power, Ground and six other pins, two of those six are being used for USB keyboard ...
1
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2answers
23 views

Generate 5VDC signal when external sensor input changes from high to low

I am new to arduino. I have a project in which I need an arduino to generate a +5VDC signal in response to a change of status, (high/5VDC To low/ground) from an external source. The external ...
1
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1answer
149 views

USB control panel with endless turn knobs

I understand that some arduinos are capable of presenting themselves as a USB HID device to a PC. I would like to use one to build a custom input controller that lets me read maybe 8 or so turn knobs ...
0
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1answer
74 views

How to code an arduino to execute a particular code using a slide switch

I’m pretty new to arduino. I need help concerning a project I’m making. I’m using a SPDT slide switch to switch between what code(method) should be executed.i.e when I shift the switch to the left, ...
0
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1answer
33 views

Ultrasonic Sensor as Unlock Sensor

Is it possible to use ultrasonic sensors maybe HC SR04 type as unlock sensors? I'm figuring out if it can replace matrix keypad? For example 6 HC SR04 are used to be an input sensor waiting for a ...
1
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1answer
29 views

What is the name of a peripheral which reads servo output data physically?

I know the title is phrased terribly, but I'm not sure how to phrase it since I'm not sure of the name. I have a servo, that I cannot connect to, except for the output spine/shaft (physically). I ...
0
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2answers
57 views

Can't get actual output when, both input logic is high

I want When, light=0, ir=0 then output will pin 8 high & pin 12 low. light=0, ir=1 then output will pin 8 high & pin 12 high. light=1, ir=0 then output will pin 8 low & pin 12 low. light=...
-3
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4answers
138 views

How should I connect 5 buttons to arduino so that I can use the least number of inputs all the buttons are connected to ground

The problem here is that I want to connect 5 input buttons to an Arduino but I do not want to utilize 5 input pins of Arduino, is there any matrix like connection using which I can reduce the number ...
0
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2answers
315 views

How to read input pin on MCP23017?

I'm working to develop a simple code for MCP23017 that I want to use to run LCD128x64. I was succeeded to set IODIRB as output and blink LED as a test. Now I want to read the pin state, but I couldn'...
0
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0answers
105 views

Issue with TTP223 capacitive buttons

I got some TTP223 to be able to trigger some inputs from an Arduino Nano thru a plastic cover without drilling anything (and hiding the buttons was cool so no one knows that there is functionality ...
0
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0answers
160 views

Not Able to get INPUT_PULLUP pinmodes to work on multiple pins

I am working with an Arduino nano, and ic2 128x32 OLED display and a 1x4 membrane keypad. Problem is that only one of the 4 pins are detecting the button press. it's not the Arduino, I already was ...
1
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1answer
42 views

Arduino Due Digital Inputs without Response

On two of my Arduino Due, when connecting the pin 3.3V to any digital inputs (37,36,35,34), no serial message nor LED_BUILTIN is thrown as output, only the Test message. Digital Pins are set as ...
0
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2answers
81 views

Handling arduino output current

I need to power an actuator that requires 12 volts and consumes between 5 and 10 amperes depending on the weight it is charging. Therefore I bought a power supply of 12 volts and 10 amperes. My ...
1
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1answer
1k views

Can I use the PWM pins as regular digital input/output pins?

In regards to the arduino which has pwm pins, can I use these pins as normal input/output digital pins or not? Thanks in advance.
1
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0answers
27 views

Loop failure after unset amount of time

I am building an art piece that takes in input from three rotary encoders and two buttons. and outputs data to a large neopixel display and 2 large 4 digit seven segment displays. The displays are ...
1
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0answers
41 views

Input value constantly

The code is for a DC motor position control PID system. I need the angle I need to move to "setpoint" and change it throughout the process. Though it is only changing once and then nothing happens if ...
2
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2answers
4k views

How can I tell the resistance of an internal pull-up resistor?

I have a SparkFun ESP8266 Thing Dev board, to which I want to perform a digitalRead() on one of the GPIO ports. I'm using D15, and I'm configuring it for input like this pinMode(15, INPUT_PULLUP); ...
1
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1answer
647 views

Can Arduino accept HDMI input video stream, and output it without any modification to the video?

I'd like to know please whether an Arduino can accept an HDMI signal from a satellite receiver, let it flow without any modification to the stream, and output it to TV?
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2answers
112 views

Stacking adc's when making an midi controller ( lots of potmeters)

I'm making a midi controller with the Arduino uno. It contains approximately 50 analog inputs with potentiometers. I have enough MCP3008 adc's here but I have no idea how I connect 2 or more adc's to ...
0
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1answer
737 views

Arduino YUN Rev. 2 power supply

I want to connect my YUN Rev. 2 to 7.4V. I read that the older version only provides exactly 5 V at the Vin Pin. Is the Rev. 2 similar to it? I read that the power supply should be improved, but what ...
0
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1answer
1k views

How to avoid electromagnetic interference on ESP32 input

I've realized a simple circuit like the following, in order to implement a rain gauge that I can access via HTTP: With the following sketch: #include <WebServer.h> #include <WiFi.h> #...
1
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1answer
158 views

How do I connect my Luxorparts keypad to my Arduino?

I just bought a 12 digit keypad from Luxorparts and it doesn't come with any schematics showing how it's wired at all. How do I figure out how to connect it to my Arduino?
0
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2answers
113 views

Does a pin (input pin Arduino) still float when connected to GPIO on RPI?

I am currently testing my application on an Arduino, and I experience floating pin issues. My program reads the pin status of input pins, which are configured as pinMode(5, INPUT); digitalWrite(5, ...
0
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1answer
149 views

Averaging input from multiple input over a fixed amount of time (estimated)

I am trying to average input values for a number of inputs and have it then store those averages into a string to write to a txt doc on a sd card. I am using: // read 6 sensors and append to the ...
0
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2answers
180 views

If I use a biasing circuit for a signal going into an analog input pin, will it affect the ADC operation?

If I have a single 100Hz AC signal biased by two 1 M-ohm resistors (as per schematic below), and then output to an Arduino UNO analog input pin, with the UNO sampling at around 1 kHz using delays, ...
0
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1answer
144 views

attachInterrupt for mega 2560 not triggering

I recently bought a mega 2560 to toy around with as a hobby. It's pretty fun so far, but I've recently gotten stuck while trying to use attachInterrupt with a button. I'm using the CHANGE mode, and ...
0
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1answer
738 views

Binary addressing and coding to control a 96 input mux matrix

I’m trying to wrap my head around using binary addresses in a mux. Failing miserably. For the circuit I have six 16 channel analog multiplexers CD74HC4067 as slaves to an eight channel multiplexor ...
1
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1answer
766 views

4x4 matrix keypad - Multiple inputs cause extra readings

I have the following matrix keypad - I am using this as a sort of controller with my Arduino (Mega2560) but I can't get real multiple inputs to work. I am able to have say two individual keys ...
2
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1answer
193 views

Reading Ground/Open signal wire combonations to power specific LED's - Can it be done?

This might be a super easy question to answer. I ordered an Arduino Uno anyways for the sole purpose to understand this. Would not mind getting a jump on things before it's here. I would like to ...
0
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2answers
2k views

How to input text from Serial monitor into a character array? [closed]

I'm using a Mega 2560 and Uno and want to input text to the serial monitor which can be stored in character array char in[]; I want array specifically as I'll be breaking each character to trigger ...
1
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2answers
50 views

User interface solutions [closed]

Are there "user intefrace" solutions for Arduino based gadgets? Solutions, that is, accepted as something more or less standard by the community. I am unaware of the relevant keywords, if there are ...
1
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3answers
1k views

digitalRead keeps giving 1

I am new to arduino programming and I have bought arduino UNO a few days ago. I am trying to read the value of pin 4 using digitalRead with pinMode INPUT_PULLUP but it keeps giving me 1 even when the ...
-1
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2answers
115 views

Can I change Vcc to some other pin?

I was working on an Arduino Uno and while carrying it to my teacher the wire's pin got stuck into the Vcc of 5 V. Can I set Vcc to other inputs? If so, then how?