Questions tagged [arduino-uno]

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0answers
44 views

Running a 12V motor on 9V battery and arduino and matlab implementation

I have a DC geared motor rated at 12V and 60 rpm . It has a quadrature encoder with 700 PPR. I connected it directly to a 9V battery (almost new) and wished to measure the rpm of that motor. To find ...
-2
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0answers
49 views

Programming Arduino using Registers

I came with this code: ...
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0answers
23 views

Connect analog sensor 12 volt to esp8266 Arduino

I need help how to connect analog fuel Level sensor 4-20mA running on 12V DC to A0 pin on esp8266, the main problem is the large difference in the voltage difference between sensor (9-20 VDC)and ...
0
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0answers
49 views

Relay Module with Arduino Uno and K-Type Thermocouple

I am working on a project for school. The goal is to use thermocouples to measure temperatures. The measured temp will control whether or not the lightbulb is turned on. The components used will be an ...
1
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1answer
51 views

Using a relay to turn PWM signal ON/OFF

I've been gaining understanding about using relays to control PWM signal (ON/OFF). Setup: Pixhawk generates PWM signals and sends it to motor controllers to control the 24V DC motor's speed. Goal: To ...
2
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2answers
69 views

MOSFET Switch in 120 Vac application with Arduino Uno

I am working on a project that requires an Arduino Uno to activate a safety mechanism using 120 Vac from a power supply. I have little experience in electronics and EE. I want to ask if the following ...
0
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2answers
55 views

Debugging Arduino Sonar Project

I am making a simple Arduino based radar project. The complete details of the project can be found on YouTube. The circuit consists of an HC SR04 sensor ,a servo motor, an arduino UNO R3 connected as ...
0
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0answers
38 views

LiFi with Arduino

I am trying to learn LiFi by transferring data between two Arduino UNO boards with sample code as in link below. https://create.arduino.cc/projecthub/hamiran1997/li-fi-system-36ff5b?f=1#comments ...
0
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1answer
89 views

How to connect multiple digital sensors with single wire?

I am new to Arduino, and I have a problem that I can't solve on my own. I am trying to connect multiple PIR motion sensors with a single wire, in parallel and onto one pin on my Arduino. I am thinking ...
1
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0answers
59 views

LED array falsely triggering Arduino pin

I have a strange issue where a limit switch is displaying as triggered the moment I turn on an LED driver with a relay. To complicate things further the issue doesn't occur 100% of the time. The ...
-3
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0answers
35 views

How to hook up ultrasonic sensor pair to arduino board? (Reposted after closing) [duplicate]

I have a pair of ultrasonic sensors, one of which is a transmitter and the other is a receiver. How do I hook them up to the Arduino board? The board is an Arduino Uno board and the sensors are ...
-3
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1answer
98 views

How to hook up discrete ultrasonic sensor pair to Arduino board?

I have a pair of ultrasonic sensors, one of which is a transmitter and the other is a receiver. How do I hook them up to the Arduino board? The board is an Arduino Uno board and the sensors are ...
0
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1answer
61 views

How many sensors can I interface with an Arduino Uno R3? [closed]

I got my final project to make, and I have a couple of questions regarding the Arduino Uno R3, as I have only worked with simulated ATMega on simulating software until now. I must mention I am not ...
0
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1answer
44 views

How can I use this LCD with Arduino?

I found my LCD somewhere from some remote control. And as I am a beginner, I would like to ask you guys how could I connect these LCD with my Arduino Uno so that I can display the numbers on this LCD.
0
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2answers
92 views

My ESP8266-01 gets hot after connecting CH_PD to the 3.3V

I connected VCC to an Arduino's 3.3 volt and the GND to Arduino's GND. When I connect CH_PD tothe Arduino's 3.3 volt, it gets hot. While the red light is on, the blue light is on, too. On the serial ...
0
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1answer
91 views

How to achieve high speed microstepping?

I used an Arduino Uno with A4988 driver with 1/16 microstepping and tried to achive the highest speed possible. Using AccelStepper library ...
2
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2answers
68 views

I don't know what voltage to use for my Arduino Uno

Specifications: It's a 100% Arduino pro micro Compatible Board. Chip: ATmega32u4 Board Mode: LEDNARDO R3 Operating frequency: 16MHz Working voltage: 5V Input voltage: 7-12V Digital IO port: 20 PWM ...
0
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1answer
207 views

How to setup a GT911 touch panel using Arduino? (i2c commiunication)

I have a 9 inch touch panel which has a GT911 controller and works with i2c. I should configure its registers and then read the touched points' coordinates. It has 6 pins (Vcc, GNd, INT, RST, SCA, SDA)...
0
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0answers
67 views

Help me pair with multiple Android devices using HM-10 BLE

I have a simple home automation project using an Arduino, HM-10 and relay to switch ON/OFF a connected load using an app made in Kodular (free online APP creation site.) The HM-10 BLE module is ...
0
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0answers
209 views

CAN BUS circuit using arduino and STM32 not receiving data

I tried to connect arduino uno R3 to STM32 using MCP2515 CAN bus transceiver. This was the transmitter code: ...
3
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1answer
85 views

Oxygen sensor voltage changes when machine is powered on. Interference?

I built an Arduino Uno based control panel for an altitude training machine, which connects to an oxygen sensor. The value is amplified by an instrumentation amp (INA122P) and read into the analog ...
0
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1answer
58 views

Connecting a bulb and a buzzer onto the same output of a relay

I am currently doing a project to light up a bulb and a buzzer at the same time. This circuit is an Arduino UNO which is connected to a relay to light up a bulb and the buzzer. Can a 40 watt bulb and ...
0
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1answer
50 views

Connecting two ports of arduino together

I want to implement the working of a CAN transceiver using Arduino. But the problem is - I have only one Arduino. So, I thought of sending and receiving signals using different ports of the same ...
2
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1answer
186 views

Arduino EMF detector / non-contact voltage detector

I am trying to build an EMF detector or non-contact voltage detector based on an Arduino to be used as a prop. The detected EMF value should be read from an analog input and based on the level, 1-5 ...
-1
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1answer
58 views

Can't get Arduino output to work using IRremote Arduino library

I'm trying to send an infrared signal to my LED-strip-receiver, but no code makes the LED work (light.) I have the IRremote.h Arduino library installed on version 1.18.15 and I found this example/test ...
0
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0answers
43 views

need help with small load cell and ADC

I am working on a project where I should be able to measure as low as 1mg load change. The acceptable error margin would be 0.1 mg. I am planning to use load cell with total capacity less than 10g ...
0
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0answers
70 views

arduino uno connected with MCP2004a Lin Bus

i have Lin Bus connected with arduino uno project ,simulaton will be in proteuse but the question is I could'nt find the MCP2004a devices in proteuse to do my shematics olease some help ?
10
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5answers
2k views

Did I design my LED circuit correctly?

For my wedding I'm making some letters which I would like to provide with some LEDs. To have the full "I made this myself" experience, I gave myself a course on electrical engineering (...
0
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1answer
118 views

Ultrasonic sensor not detecting any values when using Arduino and LabVIEW

I have connected the circuit as shown. The circuit works perfectly when I Use the Arduino ide. When I use LabVIEW, the distance from the ultrasonic sensor is always zero. The LabVIEW circuit diagram ...
0
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1answer
120 views

Arduino accidentally transmitting FM

I was trying to make an FM transmitter and, because I have no mic, I thought I could just use an Arduino (Uno) to generate some tones for testing. It turned out I never got a signal from the circuit ...
0
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2answers
141 views

How can one determine the pulse width of a servo motor?

I have recently started to fiddle with an Arduino UNO R3 kit I bought some time ago, and I got so hyped that I have decided to build a robotic arm. This robotic arm which I found on Thingiverse ...
1
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0answers
37 views

Connecting two FSRs in Series

Does anyone know if i can connect 2 FSR in series and then in parallel to a fixed resistor, creating a potential divider circuit. Given the inaccuracies and low repeatability of force reading from one ...
1
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2answers
79 views

What are the general characteristics of a faulty Arduino UNO board?

I am building an Arduino based project with DS1307 RTC clock module and storing an offset value, rarely updated though, in its EEPROM. But I am observing drift in the time as well as the offset value ...
1
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1answer
40 views

How can i generate a negative potential/current and alternate the pin-input between positive and negative potential/current using an arduino uno?

My goal is to make the barmagnet rotate by activating two coils and use both forces at the same time with an Arduino Uno. One coil should have a positive potential or current to attract the negative ...
4
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4answers
344 views

Output from TD100 with instrumentation amplifier not as expected

I've been having trouble with my TD100 circuit for a few days now and I cannot understand why the output isn't as I expect. This is the process: simulate this circuit – Schematic created using ...
1
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2answers
51 views

Unable to upload anything to Arduino Uno

Any time I try up upload a sketch to my Arduino, I get the following error message: That "1 of 10" then repeats all 10 times, and ultimately fails. I know that this board works, as I am ...
0
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0answers
30 views

lorawan end-device in class B

i am trying to implement Lorawan network in Arduino uno and end-devices are in class B. My question is how i build beacon and brodcast in network ? or there is a command in lorawan mac layer to do ...
0
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1answer
104 views

W5500 with stm32h743 micropython

I am running micropython 1.14 (happens also on 1.9) on the NUCLEO-H743ZI dev board (compiled using the board definition in micropython, no further changes) connected to a W5500 shield. The issue I am ...
1
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1answer
53 views

Help in identifying the motor

I am total noob in electronics field. I had some broken electonics appliances lying around house so now I am trying to build something out of it. Can you guys please help me with identifying the motor ...
0
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0answers
108 views

TinkerCAD schematic to Eagle for PCB design

I am new to the world of PCB design but I am having a hard time trying to convert my .brd file from TinkerCAD to Eagle. I've been following this tutorial for my conversion needs but it's almost ...
0
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2answers
176 views

How can I use my Arduino together with an external power supply?

I am trying to design a simple square wave inverter (15V input from my power supply). For this purpose I will design a H-bridge with 4 MOSFETs controlled by the Arduino (5V or 3.3V output). The thing ...
1
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0answers
51 views

Is it possible to drive an arduino nano and a 5v solenoid via usb?

So basically i want to make a clicker with a solenoid like an old school IBM keyboard. What i'm thinking is to put and arduino nano and the smallest 5v solenid i can find inside my keyboard and ...
0
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0answers
59 views

How do I format this Pro Micro?

I am using a Pro Micro, which the Arduino software for sketches identifies as Arduino Micro. When I plugged it into power the LED lights were too bright for my eyes to handle, so I verified and then ...
1
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1answer
167 views

How to reduce ADC output value fluctuations?

I'm trying to read the output voltages of some LMC6001 op-amps through an ADS1115 ADC, to get higher resolution. In the process of doing so, I'm reading huge fluctuations on the serial monitor without ...
0
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1answer
82 views

Choosing capacitors for a full swing oscillator and an ATmega328P

I am relatively new to embedded electrical engineering. Iam attempting to rebuild the Arduino Uno PCB for learning. I am familiar with the Pierce oscillator and LC circuits and some of the math around ...
0
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0answers
7 views

how use XCTU configuration software?

I have an XBee 24 module, and I want to program it. I have used the XCTU configuration software, but my XCTU does not have CE. How can I make my module the coordinator? I am using an Arduino to ...
0
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1answer
74 views

Where can I find how to use those rf transmitter/receiver

I bought those rf trans/receiver (GWB T400) I figured out that the sck, miso and mosi are for the spi communication. Gnd and 3v3 are pretty clear as well but I’m not sure what rst and cs are for. I ...
0
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2answers
116 views

Newbie Assistance - Understanding Fairy Lights

I'm VERY new to EE and am learning the basics. My first goal is wiring up some small lights for my son's LEGO projects, and am trying to sort out the basics here. Right now, I'm attempting to piece ...
1
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1answer
110 views

MSGEQ7 producing max output for all frequency bands

I have been following a MSGEQ7 tutorial by J Skoba (http://nuewire.com/info-archive/msgeq7-by-j-skoba/) and have set up my circuit in the exact way he has: And I'm using his code: ...
-1
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1answer
948 views

MCP2515 CAN Transceivers can't go higher than 125kbps

So firstly, you'll have to excuse my lack of electronic knowledge and popper terminology, this is my first crack at anything outside of the software world. I have 2 MCP2515 CAN Transceivers (the cheap ...