Questions tagged [electronics]

Use this tag to ask about electronics-related issues with your Arduino. For example: driver transistors, Ohm's Law, current-limiting resistors.

Filter by
Sorted by
Tagged with
0
votes
0answers
17 views

A small problem that I cannot detect, My steppers are not moving for some reason …?

I'm working on a similar project that can be found in this link https://howtomechatronics.com/projects/arduino-mecanum-wheels-robot/ It's the same build. To control the 4 steppers (via the NRF24L01), ...
-1
votes
2answers
47 views

Arduino Micro & Thin polymer lithium batteries [closed]

Is this battery: Polymer Lithium-ion Battery Model Number: PGEB014461 https://www.powerstream.com/p/PGEB014461.pdf Producing enough energy to power the following Arduino-micro project: ...
0
votes
1answer
59 views

5V pin output on arduino

Sorry for the newbie question (just started learning electronics). I just saw a tutorial that says that the 5V output pin on the Arduino delivers more amps (if needed) when connecting more voltage to ...
0
votes
2answers
58 views

flash read err, 1000

I know this question has been asked multiple times but solutions giving there hasn't been working, I've got an esp32 soldered to my own designed PCB board with a UART to USB converter all that is ...
0
votes
0answers
42 views

RFduino device required for RFduino hex file

So I have been working trying to measure the velocity of a string attaches using Rfduino microcontroller. I have downloaded all the library(based on https://www.youtube.com/watch?v=K0JiPQnrkHQ) and ...
0
votes
4answers
73 views

Detect if laptop is on or not?

How would I safely connect an Arduino so that it can detect if a laptop is on or off? The Arduino would be powered separately by a normal USB charger, since it needs to be turned on even when the ...
0
votes
2answers
34 views

Whats the maximum external voltage/current i can apply through an Arduino Uno ? + a couple mini questions

i'm just starting out with electronics and Arduino's and was wondering about the extent of an Arduino's ability. Will i eventually be able to program and power very high voltage/current requiring ...
0
votes
1answer
59 views

Arduino only works properly when I'm touching it

I'm working on a arduino proyect, but I encountered a problem that I dont know how to solve. The only thing I have done in the hardware part is connect the arduino nano to a power source (phone ...
-1
votes
2answers
93 views

How to power Arduino nano and LED strip?

I am making a project that uses an Arduino nano and a sound detector module to power a 1m LED strip. I got the idea from this video and I am not sure how to power it. My LED strip flashes for a split ...
0
votes
0answers
26 views

Looking for software allowing for Arduino-based project “mocking” / “wireframing”

I'd like to be able to import a number of components (e.g Arduinos, MPU6050s, displays, motor drivers, LEDs, etc) into an app of some sort then be able to wire those components to each other for the ...
0
votes
0answers
29 views

BLUETOOTH MODULES Arduino

I am new to the world of electronics so please forgive me if I ask stupid questions. I would like to ask if there is a difference between Bluetooth Modules that state: "for Arduino" as well as those ...
1
vote
1answer
52 views

Problem with arduino starter kit project 7

Can someone pls help me only the two buttons clossest to the big green wire work and i don^t know why i have already tried swapping buttons EDIT 1: my code and i know the first two are working ...
0
votes
0answers
185 views

NodeMcu SPI boot GPIO 15

On the esp8266 you've got to pull down the pin GPIO 15 to ground on boot. Otherwise the chip won't boot. However, the boards only open SPI interface has it's ChipSelect (CS,SS,..) on the same pin! Now ...
1
vote
1answer
87 views

Water tank false trigger

I am trying to make a simple water overflow protection system for my home. I have created it using BC547 and NodeMCU (ESP8266). I have a simple circuit like this: The problem here is I have 2 wires ...
0
votes
0answers
25 views

How can I make a data logging multimeter?(harvesting energy from human motion)

I’m an industrial design major working on a studio project that involves electronics that are kind of out of my league. I have a few low power generators like piezos, thermoelectric (peltier) tiles ...
0
votes
1answer
99 views

Control 2 ESC with a potentiometer with arduino

I have 2 ESC (electronic speed controller) which control these brushless motors: Hobbyking Donkey ST3511 Brushless Motor I would like to make them work with a poentiometer, under arduino. I have a ...
0
votes
0answers
32 views

Music Reactive Fountains

I want to make Music Reactive Fountain. When You say "Holaaaaaa" The fountain (PWM arduino signal) should increase making the fountain reach it's maximum height according to the amplitude of my voice ...
1
vote
0answers
29 views

3 phase 3 wire/3 phase 4 wire [closed]

I am looking for a circuit where I would be able to use a common circuit for 3 phase 3 wire and 3 phase 4 wire. Is there any conversion IC available? I have attached image for reference used in some ...
0
votes
0answers
415 views

Can I use ESP8266 and OV7670 to video stream on a web?

OV7670 image sensor, small volume, low operating voltage, providing all functions of a single chip of VGA camera and image processor. so I am using and ESP8266 to connect to internet and stream the ...
1
vote
0answers
70 views

Can I configure pairing for HC-05 and Arduino, and use the HC-05 without Arduino after?

I have a system that is outputting data via its serial, and I need to relay that data to my PC wireless-ly. If I were to setup an Arduino and HC-05 at the system's side to relay the data, that would ...
0
votes
0answers
260 views

How to operate a brushless motor & ESC with an Arduino

I have recently bought two brushless motors (Brushless-300w-6-5-Wheel-Tyre-Motor-Hoverboard-Swegway-Board-Replacement-Part) along with two ESC (https://hobbyking.com/en_us/hobbyking-40a-esc-4a-ubec....
1
vote
0answers
14 views

Selection of External CT for my application

Here I have attached my ckt for my application. My application is Motor protection Relay. Based on Current sense of 3 CT tripping of relay will occur. Tripping might due to under/over/SC/Locked rotor ...
0
votes
1answer
62 views

Do you need an ESC to run this brushless DC motor with Arduino Uno?

This is the motor: https://www.aliexpress.com/item/Wholesale-JGA25-2418-8-5-1977-rpm-Electric-Motors-Brushless-Motor-High-Torque-Speed-Controlled-DC/32360228129.html I'm hooking it up to the arduino ...
0
votes
0answers
25 views

Arduino electrical cable read [duplicate]

Guys i have been tring to make the finger sensor for my inmoov arm but i have recently run into a speed bump. So i am quite a newbie at these things so please help me out. Do you know where should i ...
0
votes
1answer
145 views

Trying to power multiple servos at once using a Arduino Mega

Recently I have been trying to do a project for my end of year project, it involved making a humanoid arm. I am still a newbie at these things, I usually have my friend do the wiring, but since he ...
0
votes
2answers
106 views

How is this simple transistor circuit suppose to work? [closed]

I've tried to replicate this circuit today. My motor is a computerfan, they apperntly don't need a flyback diode since there are no brushes. I used a 12V power source for my arduino and hooked it up ...
0
votes
1answer
19 views

Teensy not pulling down despite digitalWrite(x,LOW)

I'm trying to switch a ATX PSU on and off by serial command. My code is as follows: #include <Arduino.h> #define PIN_LOW_FOR_POWER PIN_F0 void setup() { Serial.begin(115200); } void loop() {...
1
vote
2answers
251 views

Nano damaged. Power LED OK. USB Detected. No Sketch upload. No Program running

seems i damaged one of my Nanos. i have to say i am new to Arduino and have basic electronik skills and i realized after shopping via amazon that the Nanos i have are clones with CH340G. never the ...
0
votes
1answer
26 views

Relay 24 V appliance [closed]

I want to use a switch and an Arduino to "power" a 24 V DC appliance and I am not really sure what relay to use for this. So I need the relay to be able to switch it on and off, but I have not really ...
0
votes
2answers
52 views

Arduino potentiometer (external power) with amplifier

i am trying to make some kind of an amplifier. I got an amp board but want to read out the value from the potentiometer. The problem is that this pot is connected to the amp and has to be connected to ...
2
votes
1answer
108 views

Newbie question - Biltong Box Project [closed]

I am a newbie to electronics, but I do have experience working with electrical wiring in the UK, so I am comfortable working with 240V reasonably safely. I have also built a camper including all the ...
0
votes
1answer
28 views

Adding POE to Ethernet Board

If I was to use the Arduino A000024, would I be able to add a POE MODULE to the board to get a Ethernet board with POE to run my arduino project?
-1
votes
1answer
37 views

how to control electric strike fail secure using arduino to secure a large box? [closed]

I wanted to use a electric strike fail secure lock to secure a box. Is it a good idea to use a electric strike or is there any better locking mechanism to secure the box?
2
votes
2answers
65 views

Arduino UNO socket

As I learnt so far is that Arduino UNO board has a socket for power input. The available power input range is between 7V - 20V, but the optimal usage range is 7V-12V. Here I am wondering: ---> if ...
0
votes
1answer
136 views

Garbage stored in SD card

I am an electronics graduate and an embedded design engineer, working in this field for about two years apart from the hobby time during my graduation. I am currently working on a system that has an ...
0
votes
1answer
55 views

Help me determine the power consumption/rating of the circuit below? [closed]

Please help me determine the circuit's power consumption from the battery and help me outline the steps to calculate?
1
vote
2answers
105 views

Powering Atmega328P-Pu externally [closed]

Please I'm new to Arduino and I need assistance. I'm working on a project which makes use of the ultrasonic sensor to make a certain pin high if a certain distance is attained. When I used the USB ...
0
votes
2answers
36 views

Schematic interpretation, where to put resister?

I'm new to schematics, trying to figure out where to put a resistor (no instructions other than the schematic) I'm told I need: 10K variable Resistor x 1, 4.7K Resistor x 1, 100 Resistor x 1 But I ...
0
votes
0answers
26 views

My 1604 LCD is bright with USB power but not when powered through the jack

I'm making a bench PSU. The Arduino runs off the purple 5v standby. The Mega also powers 2 LEDs (normal 5mm clear). The thing is, when I upload the code and watch the screen go through the process, it'...
-2
votes
1answer
106 views

l need to generate clock pulse with 30 Mhz using arduino? [closed]

l need to generate clock pulse with 30 Mhz using arduino ? using clock pluse to programming 32-1 multiplexer using arduino
0
votes
2answers
514 views

Can I simulate a clock without an RTC connected? [closed]

I want to program for a timer that works as set timer such as in an oven where user can set their own time. One of the way I know is using an IC(RTC) for the timer. However, I don't have the IC yet ...
0
votes
1answer
72 views

Capacitors, Arduinos and Saving Data

In short, I have programmed and wired a speed/odometer and all is working well. However, I need to save data from the components/sensors once a power button is pressed, which has led me down the road ...
1
vote
1answer
55 views

Arduino program has suddenly stopped updating

I am writing a speedo/odometer program which was all working beautifully until I introduced an LCD screen and code for the LCD. The screen works on power up, displays the distance recorded on an SD ...
0
votes
1answer
68 views

Rc receiver giving wrong values when controlling servo

So I'm building a helicopter. That why I need a receiver (tgy 9x) to read the values from my controller. Those values get passed to my Arduino due where some calculation happen and then get sent to ...
1
vote
1answer
108 views

Arduino + Solenoid Lock

I was trying to use a solenoid lock alongside the arduino, using a 12V 2A DC adapter, TIP120, and a diode. The circuit looks something like this. However, the lock isn't going in automatically (it ...
1
vote
1answer
42 views

Formula to calculate energy required to power an Arduino board

Given an Arduino board with the following specs: ATmega328 Arduino Nano AVR® ATmega MCU 8-Bit AVR Embedded Evaluation Board (link) What is the mathematical formula to calculate how much energy/power ...
0
votes
1answer
66 views

Problem in bootloading 328p using Arduino as ISP. Please help me in figuring out the problem.I have uploaded the verbose below

Arduino: 1.8.3 (Windows 10), Board: "Arduino/Genuino Uno" C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -...
0
votes
1answer
59 views

Can someone help me with my arduino and relay and switch?

This is my code. What i want to do is activate the relay when switchInNcPin is activate. I am using a switch (micro switch). It has COM NC and NO pins. Can you tell me what is wrong with my code? ...
0
votes
1answer
247 views

Readings changing in hall effect sensor

I am using a A1324 hall effect sensor for a distance measuring. The voltage output keeps changing even if the distance between the magnet and sensor does not change. The output changes +-0.200V and I ...
0
votes
2answers
113 views

Need help with understanding the CapacitiveSensor circuit diagram

Hey guys I need help with understanding the circuit diagram from this link: https://playground.arduino.cc/Main/CapacitiveSensor?from=Main.CapSense As of now, this is the schematic I drew from what I ...